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COMMONWEALTH of VIRGINIA
DEPARTMENT OF CONSERVATION AND RECREATION
DIVISION OF SOIL AND WATER CONSERVATION
Regional Office
Route 4, Box 99-J
Staunton, Virginia 24401
Tel. (703) 332-9991
June 4, 1991
Mr. Kris Tierney
Assistant Director
Planning & Development
9 North Louden Street, 2nd Fl
Winchester, VA 22601
RE: Lord Fairfax Community College (298) New Construction:
Learning Resources Center, Item NO. C-34.1 (1989) Project
Code 14196
Dear Mr. Tierney:
See enclosed the final approved Erosion and Sediment Control
(E&S) plan, the related sections of the specifications, and a copy
of the A&E's response to our plan review for the above referenced
project. This plan depicts additional items which were addressed
in our conditional approval letter dated October 3, 1990. These
plans supersede the previous set mailed to you.
If you have any questions, please feel free to contact me
personally. I may be reached at (703) 332-9991 or 332-8955.
Si
Robert R.
Erosion & S
Specialist
RRC:chr
Enclosure
cc: Jim Edmonds
onnell"y, II
ediment Control
DIVISION OF SOIL AND WATER CONSERVATION - John S. Mlinarcik
1. A note has been added to DWG. C-2 stating that all borrow and/or waste
areas associated with the project shall be stabilized and are subject to
erosion and sediment control practices.
2. Straw bale barrier was called for rather than silt fence on this project
because the entire construction area is surrounded by hard pavement. A
note was added to the maintenance section of the Erosion and Sediment
Control Narrative stating that the straw bale barrier should be replaced
every three months until the site is fully stabilized. The expectancy of
a straw bale barrier is three months.
3. Discussions with campus personnel have indicated that drop inlet
surcharge and minor onsite flooding is not currently, and has not been, a
problem. Based on the relatively small increase in runoff associates with
this project, and this information, we do not anticipate future problems.
4. A note has been added to DWG. C-2 stating that construction entrance
conforming to Virginia Erosion and Sediment Control Standard and
Specification 1.01 shall be provided.
5. The note regarding temporary seeding has been revised to read "7 days"
not 15 days.
MAY30i991
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SECTION 02070 - DEMOLITION
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PART 1 - GENERAL
1.01 RELATED DOCUMENTS: I
A. Drawings and general provisions of Contract, including General,
Supplementary and Special Conditions and Division 1 Specification
sections, apply to work of this section.
1.02 SUBMITTALS:
A. Schedule: Submit schedule indicating proposed methods and sequence
of operations for demolition work to the Owner for review prior to
commencement of work. Include coordination for shut-off, capping,
and continuation of utility services as required, together with
details for dust and noise control protection.
1. Provide detailed sequence of demolition and removal work to
ensure uninterrupted progress of Owner's on -site operations.
2. Coordinate with Owner's continuing occupation of portions of the
existing building, and with Owner's partial occupancy of
completed areas.
1.03 JOB CONDITIONS:
A. Occupancy: The Owner will be continuously occupying areas of the
building immediately adjacent to areas of demolition. Conduct
demolition work in manner that will minimize need for disruption of
Owner's normal operations. Provide minimum of 72 hours advance
notice of demolition activities which will severely impact Owner's
normal operations.
B. Condition of Structures: Owner assumes no responsibility for actual
condition of items or structures to be demolished.
1. Conditions existing at time of commencement of contract will be
maintained by Owner insofar as practicable. However, variations
within structure may occur by Owner's removal and salve
operations prior to start of demolition work.
C. Salvage Items Retained by Owner: Items indicated to be removed but
to be retained by Owner shall be carefully removed and maintained in
conditions existing at time of commencement of contract. Transport
Owner retained salvage items to Owner's on site storage location as
directed by owner.
D. Partial Demolition and Removal: Items indicated to be removed but
of salvable value to Contractor may be removed from structure as
work progresses. Transport salvaged items from site as they are
removed.
1. Storage or sale of removed items on site will not be permitted.
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E. Protections: Provide temporary barricades and other forms of
protection as required to protect Owner's personnel and general
public from injury due to demolition work.
1. Provide protective measures as required to provide free and safe
passage of Owner's personnel and general public to and from
occupied portions of building.
2. Provide shoring, bracing, or support to prevent movement,
settlement, or collapse of element to be demolished, and
adjacent work to remain.
3. Construct temporary insulated solid dustproof partitions where
required to separate areas where noisy or extensive dirt or dust
operations are performed. Equip partitions with dustproof doors
and security locks if required.
4. Provide temporary weather protection during interval between
demolition and removal of existing construction on exterior
surfaces, and installation of new construction to insure that no
water leakage or damage occurs to structure or interior areas of
existing building.
5. Protect from damage existing finish work that is to remain in
place and becomes exposed during demolition operations.
6. Remove protections at completion of work.
F. Damages: Promptly repair damages caused to adjacent facilities by
demolition work at no cost to Owner.
G. Traffic: Conduct demolition operations and debris removal in a
manner to ensure minimum interference with roads, streets, walks,
and other adjacent occupied or used facilities.
H. Explosives: Do not bring explosives or use explosives on Campus.
I. Utility Services: Maintain existing utilities indicated to remain,
keep in service, and protect against damage during demolition
operations. Coordinate with appropriate utility company for removal
of utilities to structure to be completely demolished.
1. Do not interrupt existing utilities serving occupied areas,
except when authorized in writing. Provide temporary services
during interruptions to existing utilities, as acceptable to
governing authorities.
J. Environmental Controls: Use water sprinkling, temporary enclosures,
and other suitable methods to limit dust and dirt rising and
scattering in air to lowest practical level. Comply with governing
regulations pertaining to environmental protection.
1. Do not use water when it may create hazardous or objectionable
conditions such as ice, flooding, and pollution.
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PART 2 - PRODUCTS
Not Applicable
PART 3 - EXECUTION
3.01 INSPECTION:
A. Prior to commencement of demolition work, inspect areas in which
work will be performed. Photograph existing conditions of
structure, surfaces, equipment or to surrounding properties which
could be misconstrued as damage resulting from demolition work; file
with Owner prior to starting work.
3.02 PREPARATION:
A. Provide interior and exterior shoring, bracing, or support to
prevent movement, settlement or collapse of structures to be
demolished and adjacent facilities to remain.
1. Cease operations and notify the Architect/Engineer immediately
if safety of structure appears to be endangered. Take
precautions to support structure until determination is made for
continuing operations.
B. Cover and protect equipment and fixtures to remain from soiling or
damage when demolition work is performed in rooms or areas from
which such items have not been removed.
C. Erect and maintain dust -proof partitions and closures as required to
prevent spread of dust or fumes to occupied portions of the
building.
1. Where demolition occurs immediately adjacent to occupied
portions of the building, construct dust -proof partitions of
minimum 4" studs, 1/2" drywall on occupied side, 1/2" fire -
retardant plywood on demolition side, and fill partition cavity
with sound -deadening insulation.
2. Provide weatherproof closures for exterior openings resulting
from demolition work.
D. Locate, identify, stub off and disconnect utility services that are
not indicated to remain.
1. Provide by-pass connections as necessary to maintain continuity
of service to occupied areas of building. Provide minimum of 72
hours advance notice to Owner if shut-off of service is
necessary during change -over.
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3.03 DEMOLITION:
A. Perform demolition work in a systematic manner. Use such methods as
required to complete work indicated on Drawings in accordance with
demolition schedule and governing regulations.
1. Demolish concrete and masonry in buildings to remain in small
sections. Cut concrete and masonry at junctures with
construction to remain using power -driven masonry saw or hand
tools; do not use power -driven impact tools.
2. Locate demolition equipment throughout structure and promptly
remove debris to avoid imposing excessive loads on supporting
walls, floors or framing.
3. Provide services for effective air and water pollution controls
as required by local authorities having jurisdiction.
4. Demolish and remove below -grade wood, concrete, masonry or metal
construction.
5. For slabs on grade, use removal methods that will not crack or
structurally disturb adjacent slabs or partitions. Use power
saw where possible.
6. Completely fill below -grade areas and voids resulting from
demolition work. Provide fill consisting of approved earth,
gravel or sand, free of trash and debris, stones over 6"
diameter, roots or other organic matter.
B. If unanticipated mechanical, electrical or structural elements which
conflict with intended function or design are encountered,
investigate and measure both nature and extent of the conflict.
Submit report to Architect/Engineer in written, accurate detail.
Pending receipt of directive from Architect/Engineer, rearrange
selective demolition schedule as necessary to continue overall job
progress without delay.
3.04 SALVAGE MATERIALS:
A. Salvage Items: Where indicated as salvage to be delivered to Owner,
carefully remove indicated items, clean, store and turn over to
Owner and obtain receipt.
1. Carefully remove, clean, and deliver to Owner the following
items:
a. Exterior light fixtures and posts.
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3.05 DISPOSAL OF DEMOLISHED MATERIALS:
A. Remove debris, rubbish and other materials resulting from demolition
operations from building site. Transport and legally dispose of
materials off site.
1. Burning of removed materials is not permitted on project site.
3.06 CLEAN-UP AND REPAIR:
A. Upon completion of demolition work, remove tools, equipment and
demolished materials from site. Remove protections and leave
interior areas broom clean.
B. Repair demolition performed in excess of that required. Return
structures and surfaces to remain to condition existing prior to
commencement of selective demolition work. Repair adjacent
construction of surfaces soiled or damaged by demolition work.
END OF SECTION
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SECTION 02110 - SITE CLEARING
PART 1 - GENERAL
1.01 RELATED DOCUMENTS:
A. Drawings and general provisions of Contract, including General,
Supplementary, and Special Conditions and Division 1 Specification
Sections, apply to this Section.
1.02 JOB CONDITIONS:
A. Traffic: Conduct site clearing operations to ensure minimum
interference with roads, streets, walks, and other adjacent occupied
or used facilities. Do not close or obstruct streets, walks or
other occupied or used facilities without permission from
authorities having jurisdiction.
B. Protection of Existing Improvements: Provide protections necessary
to prevent damage to existing improvements to remain in place.
1. Restore damaged improvements to their original conditions, as
acceptable to parties having jurisdiction.
C. Protection of Existing Trees and Vegetation: Protect existing trees
and other vegetation to remain in place, against unnecessary
cutting, breaking or skinning of roots, skinning and bruising of
bark, smothering of trees by stockpiling construction materials or
excavated materials within drip line, excess foot or vehicular
traffic, or parking of vehicles within drip line. Provide temporary
guards to protect trees and vegetation to be left standing.
1. Water trees and other vegetation to remain within limits of
contract work as required to maintain their health during course
of construction operations.
2. Provide protection for roots over 1-1/2" diameter cut during
construction operations. Coat cut faces with an emulsified
asphalt, or other acceptable coating, formulated for use on
damaged plant tissues. Temporarily cover exposed roots with wet
burlap to prevent roots from drying out; cover with earth as
soon as possible.
3. Repair or replace trees and vegetation indicated to remain which
are damaged by construction operations, in a manner acceptable
to the Owner. Employ licensed arborist to repair damages to
trees and shrubs.
4. Replace trees which cannot be repaired and restored to
full -growth status, as determined by arborist.
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PART 2 - PRODUCTS
Not Applicable.
PART 3 - EXECUTION
3.01 SITE CLEANING:
A. General: Remove trees, shrubs; grass and other vegetation,
improvements, or obstructions interfering with installation of new
construction. Remove such items elsewhere on site or premises as
specifically indicated. Removal includes digging out stumps and
roots.
1. Carefully and cleanly cut roots and branches of tree to be left
standing, where such roots and branches obstruct new
construction.
B. Topsoil: Topsoil is defined as friable clay loam surface soil found
in a depth of not less than 4". Satisfactory topsoil is reasonably
free of subsoil, clay lumps, stones, and other objects over 2" in
diameter, and without weeds, roots, and other objectionable
material.
1. Strip topsoil to whatever depths encountered in a manner to
prevent intermingling with underlying subsoil or other
objectionable material.
a. Remove heavy growths of grass from areas before stripping.
b. Where trees are indicated to be left standing, stop topsoil
stripping a sufficient distance to prevent damage to main
root system.
2. Stockpile topsoil in storage piles in areas shown, or where
directed. Construct storage piles to freely drain surface
water. Cover storage piles to prevent wind-blown dust.
3. Dispose of unsuitable or excess topsoil same as waste material,
herein specified.
C. Clearing and Grubbing: Clear site of trees, shrubs and other
vegetation, except for those indicated to be left standing.
1. Completely remove stumps, roots, and other debris to a depth of
not less than 18 inches below the original surface level of the
ground.
2. Use only hand methods for grubbing inside drip line of trees
indicated to be left standing.
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3. Fill depressions caused by clearing and grubbing operations with
satisfactory soil material, unless further excavation or
earthwork is indicated.
a. Place fill material in horizontal layers not exceeding 6"
loose depth, and thoroughly compact to a density equal to
adjacent original ground.
D. Removal of Improvements: Remove existing above -grade and
below -grade improvements necessary to permit construction, and other
work as indicated.
1. Remove abandoned underground piping or conduit interfering with
construction.
3.02 DISPOSAL OF WASTE MATERIALS:
A. Burning on Owner's Property: Burning is not permitted on Owner's
property.
B. Removal from Owner's Property: Remove waste materials and
unsuitable and excess topsoil from Owner's property and dispose of
off site in legal manner.
END OF SECTION
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SECTION 02200 - EARTHWORK
PART 1 - GENERAL
1.01 RELATED DOCUMENTS:
A. Drawings and general provisions of Contract, including General,
Supplementary, and Special Conditions and Division 1 Specification
Sections, apply to this Section.
1.02 EXCAVATION FOR MECHANICAL/ELECTRICAL WORK:
A. Excavation and backfill required in conjunction with underground
mechanical and electrical utilities, and buried mechanical and
electrical appurtenances is included as work of this section.
1.03 DEFINITIONS:
A. Excavation consists of removal of material encountered to subgrade
elevations indicated and subsequent disposal of materials removed.
B. Unauthorized excavation consists of removal of materials beyond
indicated subgrade elevations or dimensions without specific
direction of Owner's Representative.
C. Unauthorized excavation, as well as remedial work directed by
Owner's Representative, shall be at Contractor's expense.
1. Under footings, foundation bases, or retaining walls, fill
unauthorized excavation by extending indicated bottom elevation
of footing or base to excavation bottom, without altering
required top elevation. Lean concrete fill may be used to bring
elevations to proper position, when acceptable to Owner's
Representative.
2. In locations other than those above, backfill and compact
unauthorized excavations as specified for authorized excavations
of same classification, unless otherwise directed by Owner's
Representative.
D. Additional Excavation: When excavation has reached required
subgrade elevations, notify Testing Service, who will make an
inspection of conditions. If Testing Service determines that
bearing materials at required subgrade elevations are unsuitable,
continue excavation until suitable bearing materials are encountered
and replace excavated material as directed by Owner's
Representative.
1. Removal of unsuitable material and its replacement as directed
will be paid on basis of Conditions of the Contract relative to
changes in work.
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E. Subgrade: The undisturbed earth or the compacted soil layer
immediately below granular subbase, gravel fill, or topsoil
materials.
F. Structure: Buildings, foundations, slabs, tanks, curbs, or other
man-made stationary features occurring above or below ground
surface.
1.04 SUBMITTALS:
A. Test Reports: Submit the following reports directly to Owner's
Representative from the Testing Service, with copy to Contractor:
1. Test reports on borrow material.
2. Verification of suitability of each footing subgrade material,
in accordance with specified requirements.
3. Field reports; in -place soil density tests.
4. One optimum moisture -maximum density curve for each type of soil
encountered.
5. Report of actual unconfined compressive strength and/or results
of bearing tests of each strata tested.
1.05 QUALITY ASSURANCE:
A. Codes and Standards: Perform excavation work in compliance with
applicable requirements of authorities having jurisdiction. Comply
with State of Virginia standards and regulations if more stringent
than herein specified.
B. Testing and Inspection Service: The Owner will employ an
independent geotechnical testing and inspection laboratory to
perform soil testing and inspection service during earthwork
operations.
1.06 PROJECT CONDITIONS:
A. Site Information: Data in subsurface investigation reports was used
for the basis of the design and are available to the Contractor for
information only. Conditions are not intended as representations or
warranties of accuracy or continuity between soil borings. The
Owner will not be responsible for interpretations or conclusions
drawn from this data by Contractor.
1. Additional test borings and other exploratory operations may be
performed by Contractor, at the Contractor's option; however, no
change in the Contract Sum will be authorized for such
additional exploration.
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B. Existing Utilities: Locate existing underground utilities in areas
of excavation work. If utilities are indicated to remain in place,
provide adequate means of support and protection during earthwork
operations.
1. Should uncharted, or incorrectly charted, piping or other
utilities be encountered during excavation, consult utility
owner immediately for directions. Cooperate with Owner and
utility companies in keeping respective services and facilities
in operation. Repair damaged utilities to satisfaction of
utility owner.
2. Do not interrupt existing utilities serving facilities occupied
by Owner or others, during occupied hours, except when permitted
in writing by Architect and then only after acceptable temporary
utility services have been provided.
a. Provide minimum of 48-hour notice to Owner's Representative,
and receive written notice to proceed before interrupting
any utility.
3. Demolish and completely remove from site existing underground
utilities indicated to be removed. Coordinate with utility
companies for shutoff of service if lines are active.
C. Use of Explosives: Do not bring explosives onto site or use in work
without prior written permission from authorities having
jurisdiction.
D. Protection of Persons and Property: Barricade open excavations
occurring as part of this work and post with warning lights.
1. Operate warning lights as recommended by authorities having
jurisdiction.
2. Protect structures, utilities, sidewalks, pavements, and other
facilities from damage caused by settlement, lateral movement,
undermining, washout, and other hazards created by earthwork
operations.
3. Perform excavation by hand within dripline of large trees to
remain. Protect root systems from damage or dryout to the
greatest extent possible. Maintain moist condition for root
system and cover exposed roots with moistened burlap.
PART 2 - PRODUCTS
2.01 SOIL MATERIALS:
A. Satisfactory soil materials are defined as those complying with ASTM
D2487 soil classification groups GW, GP, GM, SM, SW, and SP.
B. Unsatisfactory soil materials are defined as those complying with
ASTM D2487 soil classification groups GC, SC, ML, MH, CL, CH, OL,
OH, and PT.
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•
C. Subbase Material: VDOT No. 21A Dense Grade Aggregate.
D. Gravel Fill: VDOT No. 57 Stone.
E. Backfill and Fill Materials: Satisfactory soil materials free of
clay, rock or gravel larger than 2 inches in any dimension, debris,
waste, frozen materials, vegetation and other deleterious matter.
1. Backfill and fill material shall be satisfactory material with a
liquid limit less than 40 and a plasticity index less than 15.
2. Backfill and fill for grass areas shall be satisfactory
material, and may also include ML excavated material, with a
liquid limit less than 40 and a plasticity index less than 15
properly worked by the Contractor to obtain the specified
compaction while maintaining the moisture content as specified
hereinafter; however, the Contractor should be aware of the
possible construction difficulties and the very close moisture
control required in the proper field placement and compaction of
these latter materials.
PART 3 - EXECUTION
3.01 EXCAVATION:
A. Excavation is Unclassified, and includes excavation to subgrade
elevations indicated, regardless of character of materials and
obstructions encountered.
3.02 STABILITY OF EXCAVATIONS:
A. General: Comply with local codes, ordinances, and requirements of
agencies having jurisdiction.
B. Slope sides of excavations to comply with local codes, ordinances,
and requirements of agencies having jurisdiction. Shore and brace
where sloping is not possible because of space restrictions or
stability of material excavated. Maintain sides and slopes of
excavations in safe condition until completion of backfilling.
C. Shoring and Bracing: Provide materials for shoring and bracing,
such as sheet piling, uprights, stringers, and cross braces, in good
serviceable condition. Maintain shoring and bracing in excavations
regardless of time period excavations will be open. Extend shoring
and bracing as excavation progresses.
3.03 DEWATERING:
A. Prevent surface water and subsurface or ground water from flowing
into excavations and from flooding project site and surrounding
area.
1. Do not allow water to accumulate in excavations. Remove water
to prevent softening of foundation bottoms, undercutting
footings, and soil changes detrimental to stability of subgrades
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and foundations. Provide and maintain pumps, well points,
sumps, suction and discharge lines, and other dewatering system
components necessary to convey water away from excavations.
2. Establish and maintain temporary drainage ditches and other
diversions outside excavation limits to convey rain water and
water removed from excavations to collecting or runoff areas.
Do not use trench excavations as temporary drainage ditches.
3.04 STORAGE OF EXCAVATED MATERIALS:
A. Stockpile excavated materials acceptable for backfill and fill where
directed. Place, grade, and shape stockpiles for proper drainage.
1. Locate and retain soil materials away from edge of excavations.
Do not store within drip line of trees indicated to remain.
2. Dispose of excess excavated soil material and materials not
acceptable for use as backfill or fill.
3.05 EXCAVATION FOR STRUCTURES:
A. Conform to elevations and dimensions shown within a tolerance of
plus or minus 0.10 foot, and extending a sufficient distance from
footings and foundations to permit placing and removal of concrete
formwork, installation of services, and other construction and for
inspection.
1. Excavations for footings and foundations: Do not disturb bottom
of excavation. Excavate by hand to final grade just before
concrete reinforcement is place. Trim bottoms to required lines
and grades to leave solid base to receive concrete pile caps.
2. Excavation for Underground Tanks, Basins, and Mechanical or
Electrical Structures: Conform to elevations and dimensions
indicated within a tolerance of plus or minus 0.10 foot; plus a
sufficient distance to permit placing and removal of concrete
formwork, installation of services, and other construction and
for inspection. Do not disturb bottom of excavations, intended
for bearing surfaces.
3.06 EXCAVATION FOR PAVEMENTS:
A. Cut surface under pavements to comply with cross -sections,
elevations and grades as indicated.
3.07 TRENCH EXCAVATION FOR PIPES AND CONDUIT:
A. Excavate trenches
ample working room
both sides of pipe
to uniform width,
and a minimum of
or conduit.
sufficiently wide to provide
6 to 9 inches of clearance on
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B. Excavate trenches and conduit to depth indicated or required to
establish indicated slope and invert elevations and to support
bottom of pipe or conduit on undisturbed soil. Beyond building
perimeter, excavate trenches to allow installation of top of pipe
below frost line.
1. For pipes or conduit less than 6 inches in nominal size, and for
flat-bottomed, multiple -duct conduit units, do not excavate
beyond indicated depths. Hand -excavate bottom cut to accurate
elevations and support pipe or conduit on undisturbed soil.
2. For pipes and equipment 6 inches or larger in nominal size,
shape bottom of trench to fit bottom of pipe for 90 degrees
(bottom 1/4 of the circumference). Fill depressions with tamped
sand backfill. At each pipe joint, dig bell holes to relieve
pipe bell of loads ensure continuous bearing of pipe barrel on
bearing surface.
3.08 COLD WEATHER PROTECTION:
A. Protect excavation bottoms against freezing when atmospheric
temperature is less than 35 degrees F.
A. General: Place soil material in layers to required subgrade
elevations, for each area classification listed below, using
materials specified in Part 2 of this Section.
1. Under grassed areas, use satisfactory material.
2. Under walks and pavements, use subbase material, satisfactory
material, or a combination.
3. Under steps, use gravel fill material.
4. Under building slabs, use gravel fill material.
5. Under piping and conduit and equipment, use subbase materials
where required over rock bearing surface and for correction of
unauthorized excavation. Shape excavation bottom to fit bottom
90 degrees of cylinder.
6. Backfill trenches with concrete where trench excavations pass
within 18 inches of column or wall footings and that are carried
below bottom of such footings or that pass under wall footings.
Place concrete to level of bottom of adjacent footing.
7. Concrete is specified in Division 3.
8. Do not backfill trenches until tests and inspections have been
made and backfilling is authorized by Owner's Representative.
Use care in backfilling to avoid damage or displacement of pipe
systems.
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9. Provide 4-inch-thick concrete base slab support for piping or
conduit less than 2'-6" below surface of roadways. After
installation and testing of piping or conduit, provide minimum
4-inch-thick encasement (sides and top) of concrete prior to
backfilling or placement of roadway subbase.
B. Backfill excavations as promptly as work permits, but not until
completion of the following:
1. Acceptance of construction below finish grade including, where
applicable, dampproofing, waterproofing, and perimeter
insulation.
2. Inspection, testing, approval, and recording locations of
underground utilities have been performed and recorded.
3. Removal of concrete formwork.
4. Removal of shoring and bracing, and backfilling of voids with
satisfactory materials.
5. Removal of trash and debris from excavation.
6. Permanent or temporary horizontal bracing is in place on
horizontally supported walls.
3.10 PLACEMENT AND COMPACTION:
A. Ground Surface Preparation: Remove vegetation, debris,
unsatisfactory soil materials, obstructions, and deleterious
materials from ground surface prior to placement of fills. Plow
strip, or break up sloped surfaces steeper than 1 vertical to 4
horizontal so that fill material will bond with existing surface.
1. When existing ground surface has a density less than that
specified under "Compaction" for particular area classification,
break up ground surface, pulverize, moisture -condition to
optimum moisture content, and compact to required depth and
percentage of maximum density.
B. Place backfill and fill materials in layers not more than 8 inches
in loose depth for material compacted by heavy compaction equipment,
and not more than 4 inches in loose depth for material compacted by
hand -operated tampers.
C. Before compaction, moisten or aerate each layer as necessary to
provide optimum moisture content. Compact each layer to required
percentage of maximum dry density or relative dry density for each
area classification. Do not place backfill or fill material on
surfaces that are muddy, frozen, or contain frost or ice.
D. Place backfill and fill materials evenly adjacent to structures,
piping, or conduit to required elevations. Prevent wedging action
of backfill against structures or displacement of piping or conduit
by carrying material uniformly around structure, piping, or conduit
to approximately the same elevation in each lift.
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E. Control soil and fill compaction, providing minimum percentage of
density specified for each area classification indicated below.
Correct improperly compacted areas or lifts as directed by Owner's
Representative if soil density tests indicate inadequate compaction.
1. Percentage of Maximum Density Requirements: Compact soil to not
less than the following percentages of maximum density, in
accordance with ASTM D 698.
a. Under structures and building slabs, compact top 12 inches
of subgrade and each layer of backfill or fill material at
98 percent maximum density.
b. Under lawn or unpaved areas, compact top 6 inches of
subgrade and 'each layer of backfill or fill material at 90
percent maximum density.
c. Under walkways, pavements, and gravel surfaces, compact top
6 inches of subgrade and each layer of backfill or fill
material at 95 percent maximum density.
2. Moisture Control: Where subgrade or layer or soil material must
be moisture conditioned before compaction, uniformly apply water
to surface of subgrade or layer of soil material. Apply water
in minimum quantity as necessary to prevent free water from
appearing on surface during or subsequent to compaction
operations.
a. Remove and replace, or scarify and air dry, soil material
that is too wet to permit compaction to specified density.
b. Stockpile or spread soil material that has been removed
because it is too wet to permit compaction. Assist drying
by dicing, harrowing, or pulverizing until moisture content
is reduced to a satisfactory value.
3.11 GRADING:
A. General: Uniformly grade areas within limits of grading under this
section, including adjacent transition areas. Smooth finished
surface within specified tolerances, compact with uniform levels or
slopes between points where elevations are indicated or between such
points and existing grades.
B. Grading Outside Building Lines: Grade areas adjacent to building
lines to drain away from structures and to prevent ponding. Finish
surfaces free from irregular surface changes and as follows:
1. Lawn or Unpaved Areas: Finish areas to receive topsoil to
within not more than 0.10 foot above or below required subgrade
elevations.
2. Walks: Shape surface of areas under walks to line, grade, and
cross-section, with finish surface not more than 0.10 foot above
or below required subgrade elevation.
02200-8
LORD FAIRFAX COMMUNIT0OLLEGE
LEARNING RESOURCES CENTER
0
3. Pavements: Shape surface of areas under pavement to line,
grade, and cross-section, with finish surface not more than 1/2
inch above or below required subgrade elevation.
C. Grading Surface of Fill under Building Slabs: Grade smooth and
even, free of voids, compacted as specified, and to required
elevation. Provide final grades within tolerance of 1/2 inch when
tested with a 10-foot straightedge.
D. Compaction: After grading, compact subgrade surfaces to the depth
and indicated percentage of maximum or relative density for each
area classification.
3.12 PAVEMENT SUBBASE COURSE:
A. General: Subbase course consists of placing subbase material, in
layers of specified thickness, over subgrade surface to support a
pavement base course.
1. Refer to other Division 2 sections for paving specifications.
B. Grade Control: During construction, maintain lines and grades
including crown and cross -slope of subbase course.
C. Placing: Place subbase course material on prepared subgrade in
layers of uniform thickness, conforming to indicated cross-section
and thickness. Maintain optimum moisture content for compacting
subbase material during placement operations.
1. When a compacted subbase course is indicated to be 6 inches
thick or less, place material in a single layer. When indicated
to be more than 6 inches thick, place material in equal layers,
except no single layer more than 6 inches or less than 3 inches
in thickness when compacted.
3.13 BUILDING SLAB DRAINAGE COURSE:
A. General: Drainage course consists of placement of gravel fill
material, in layers of indicated thickness, over subgrade surface to
support concrete building slabs.
B. Placing: Place gravel fill material on prepared subgrade in layers
of uniform thickness, conforming to indicated cross-section and
thickness. Maintain optimum moisture content for compacting
material during placement operations.
1. When a compacted drainage course is indicated to be 6 inches
thick or less, place material in a single layer. When indicated
to be more than 6 inches thick, place material in equal layers,
except no single layer more than 6 inches or less than 3 inches
in thickness when compacted.
02200-9
LORD FAIRFAX COMMUNI*OLLEGE Is
LEARNING RESOURCES CENTER
3.14 GRAVEL SURFACES:
A. Place material on prepared subgrade in layers of uniform thickness,
conforming to indicated cross-section and thickness. Maintain
optimum moisture content for compacting material during placement.
3.15 FIELD QUALITY CONTROL:
A. Quality Control Testing During Construction: Allow testing service
to inspect and approve each subgrade and fill layer before further
backfill or construction work is performed.
B. Perform field density tests in accordance with ASTM D 1556 (sand
cone method) or ASTM D 2167 (rubber balloon method), as applicable.
I. Field density tests may also be performed by the nuclear method
in accordance with ASTM D 2922, providing that calibration
curves are periodically checked and adjusted to correlate to
tests performed using ASTM D 1556. In conjunction with each
density calibration check, check the calibration curves
furnished with the moisture gages in accordance with ASTM D
3017.
2. If field tests are performed using nuclear methods, make
calibration checks of both density and moisture gages at
beginning of work, on each different type of material
encountered, and at intervals as directed by the Owner's
Representative.
C. Footing Subgrade: For each strata of soil on which footings will be
placed, perform at least one test to verify required design bearing
capacities. Subsequent verification and approval of each footing
subgrade may be based on a visual comparison of each subgrade with
related tested strata when acceptable to Owner's Representative.
D. Paved Areas and Building Slab Subgrade: Perform at least one field
density test of subgrade for every 2,000 sq. ft. of paved area or
building slab, but in no case fewer than three tests.
1. In each compacted fill layer, perform one field density test for
every 2,000 sq. ft. of overlaying building slab or paved area,
but in no case fewer than three tests.
2. Foundation Wall Backfill: Perform at least two field density
tests at locations and elevations as directed.
3. If in opinion of Architect, based on testing service reports and
inspection, subgrade or fills that have been placed are below
specified density, perform additional compaction and testing
until specified density is obtained.
02200-10
LORD FAIRFAX COMMUNITO LLEGE
LEARNING RESOURCES CENTER
3.16 EROSION CONTROL:
A. Provide erosion control methods in accordance with requirements of
authorities having jurisdiction.
3.17 MAINTENANCE:
A. Protection of Graded Areas: Protect newly graded areas from traffic
and erosion. Keep free of trash and debris.
B. Repair and reestablish grades in settled, eroded, and rutted areas
to specified tolerances.
C. Reconditioning Compacted Areas: Where completed compacted areas are
disturbed by subsequent construction operations or adverse weather,
scarify surface, reshape, and compact to required density prior to
further construction.
D. Settling: Where settling is measurable or observable at excavated
areas during general project warranty period, remove surface
(pavement, lawn, or other finish), add backfill material, compact,
and replace surface treatment. Restore appearance, quality, and
condition of surface or finish to match adjacent work, and eliminate
evidence of restoration to greatest extent possible.
3.18 DISPOSAL OF EXCESS AND WASTE MATERIALS:
A. Removal from Owner's Property: Remove waste materials, including
unacceptable excavated material, trash, and debris, and dispose of
it off Owner's property.
3.19 UNIT PRICES:
A. Following unit price shall govern additions to or deductions from
quantity included in lump sum Base Bid for work under this section
and quantity actually incorporated in project. Insert unit price on
Form of Proposal in space provided.
1. Overexcavation of unsatisfactory material and backfill and
compaction with satisfactory borrow material (per cubic yard).
END OF SECTION
02200-11
LORD FAIRFAX COMMUNITOOLLEGE Is
LEARNING RESOURCES CENTER
SECTION 02720 - STORM SEWAGE SYSTEMS
PART 1 - GENERAL
1.01 RELATED DOCUMENTS:
A. Drawings and general provisions of Contract, including General,
Supplementary, and Special Conditions and Division 1 Specification
Sections, apply to this Section.
1.02 QUALITY ASSURANCE:
A. Codes and Standards:
1. Plumbing Code Compliance: Comply with applicable portions of
Virginia Uniform Statewide Building Code and BOCA National
Plumbing Code pertaining to selection and installation of storm
sewage system's materials and products.
2. Environmental Compliance: Comply with applicable regulations
and -standards of the governing authorities having jurisdiction.
3. Materials and Methods of Construction: Comply with Virginia
Department of Transportation (VDOT) Road and Bridge
Specifications (latest edition), amd VDOT Road and Bridge
Standards (latest edition).
4. Employ a qualified surveyor, or site engineer for system layout
and cut sheets.
1.03 SUBMITTALS:
A. Product Data: Submit manufacturer's technical product data and
installation instructions for.storm sewage system materials and
products.
B. Shop Drawings: Submit shop drawings for storm sewage systems.
Include details of underground structures, connections, accessories,
fittings, and manholes.
C. Record Drawings: At project closeout, submit record drawings of
installed storm sewage piping and products, in accordance with
requirements of Division 1.
D. Maintenance Data: Submit maintenance data and parts lists for storm
sewage system materials and products. Include this data, product
data, shop drawings, and record drawings in maintenance manual; in
accordance with requirements of Division 1.
02720-1
LORD FAIRFAX COMMUNIAOLLEGE
LEARNING RESOURCES CENTER
PART 2 - PRODUCTS
2.01 PIPES AND PIPE FITTINGS:
A. General: Provide pipes of one of the following materials, of
weight/class indicated. Provide pipe fittings and accessories of
same material and weight/class as pipes.
1. Reinforced Concrete Pipe: ASTM C 76, Class III unless otherwise
indicated.
a. Fittings: Reinforced concrete, same strength as adjoining
pipe, tongue -and -groove gasketed joints complying with ASTM
C 443.
2. Polyvinyl Chloride (PVC) Sewer Pipe: ASTM D 3033, Type PSP, SDR
35; or ASTM D 3034, Type PSM, SDR 35.
a. Fittings: PVC, ASTM D 3033 or D 3034, solvent cement joints
complying with ASTM D 2855 using solvent cement complying
with ASTM D 2564; or elastomeric joints complying with ASTM
D 3212 using elastomeric seals complying with ASTM F 477.
2.02 STORM SEWER STRUCTURES:
A. General: Provide precast reinforced concrete storm sewer structures
complying with ASTM C 478, and applicable portions of VDOT Road and
Bridge Standards and Specifications.
1. Steps: Ductile -iron or aluminum, integrally cast into manhole
sidewalls.
2. Manhole Frames and Covers: Grey cast-iron, ANSI/ASTM A 48,
Class 35 B, with lettering cost into top reading "STORM SEWER".
PART 3 - EXECUTION
3.01 INSTALLATION OF PIPE AND PIPE FITTINGS:
A. General: Install piping in accordance VDOT Standards and
Specification and with governing authorities having jurisdiction,
except where more stringent requirements are indicated.
1. Inspect piping before installation to detect apparent defects.
Mark defective materials with white paint and promptly remove
from site.
2. Lay piping beginning at low point of system, true to grades and
alignment indicated, with unbroken continuity of invert.
3. Place bell ends or groove ends of piping facing upstream.
4. Install gaskets in accordance with manufacturer's
recommendations for use of lubricants, cements, and other
special installation requirements.
02720-2
LORD FAIRFAX COMMUNI10OLLEGE
LEARNING RESOURCES CENTER
0
B. Concrete Pipe: Install in accordance with applicable provisions of
ACPA "Concrete Pipe Installation Manual".
C. Plastic Pipe: Install in accordance with manufacturer's
installation recommendations, and in accordance with ASTM D 2321.
D. Cleaning Piping: Clear interior of piping of dirt and other
superfluous material as work progresses. Maintain swab or drag in
line and pull past each joint as it is competed.
1. In large, accessible piping, brushes and brooms may be used for
cleaning.
2. Place plugs in ends of uncompleted conduit at end of day or
whenever work stops.
3. Flush lines between manholes if required to remove collected
debris.
E. Joint Adapters: Make joints between different types of pipe with
standard manufactured adapters and fittings intended for that
purpose.
F. Closing Abandoned Utilities: Close open ends of abandoned
underground utilities which are indicated to remain in place.
Provide sufficiently strong closures to withstand hydrostatic or
earth pressure which may result after ends of abandoned utilities
have been closed.
1. Close open ends of concrete or masonry utilities with not less
than 8" thick brink masonry bulkheads.
2. Close open ends of piping with threaded metal caps, plastic
plugs, or other acceptable methods suitable for size and type of
material being closed. Wood plugs are not acceptable.
G. Interior Inspection: Inspect piping to determine whether line
displacement or other damage has occurred.
1. Make inspections after lines between manholes, or manhole
locations, have been installed and approximately 2' of backfill
is in place, and again at completion of project.
2. If inspection indicates poor alignment, debris, displaced pipe,
infiltration or other defects, correct such defects, and
reinspect.
3.02 PRECAST CONCRETE STORM SEWER STRUCTURES:
A. General: Where manholes occur in pavements, set tops of frames and
covers flush with finish surface. Elsewhere, set tops 3" above
finish surface, unless otherwise indicated.
1. Install in accordance with ASTM C 891 and VDOT Standards and
Specifications.
02720-3
LORD FAIRFAX COMMUNAOLLEGE
LEARNING RESOURCES CENTER
3.03 TAP CONNECTIONS:
A. Make connections to existing piping and underground structures, so
that finished work will conform as nearly as practicable to
requirements specified for new work.
3.04 BACKFILLING:
A. General: Conduct backfill operations of open -cut trenches closely
following laying, jointing, and bedding of pipe, and after initial
inspection and testing are completed.
3.05 FIELD QUALITY CONTROL:
A. Testing: Perform testing of completed piping in accordance with
authorities having jurisdiction.
END OF SECTION
02720-4
VIRGINIA COMMUNITY COLLEGE SYSTEM
James Monroe Building • 101 North Fourteenth Street • Richmond, Virginia 23219
October 10, 1990
Mr. Wayne Miller, Zoning Administrator
Frederick County
9 Court Square
Winchester, Virginia 22601
Re: Lord Fairfax Community College (298)
New Construction: Learning Resources Center
Item No. C-34.1 (1989) Project Code 14196
Local Building Regulations
Dear Mr. Miller:
Pursuant to our earlier telephone conversation, I am forwarding a
copy of an "excerpt" from the standard General Conditions of the
Contract for Capital Outlay Projects. This document is issued by
the Department of General Services, Division of Engineering and
Buildings and applies to each of our major building projects.
As you will note, Section 3, Paragraph (e) "Laws and Regulations"
states, "Because this is a project of the Commonwealth of Virginia,
codes or zoning ordinances of local political subdivisions do not
apply." Accordingly, as I previously stated, we do not routinely
forward a copy of the plans and specifications to local building
authorities. If requested to do so, we will provide a complete set
of the plans and specifications to your office for informational
purposes only. While we would be happy take your comments under
consideration, please understand that any review comments would be
of an advisory nature and would not be binding on the Commonwealth
of Virginia.
804-225-2117, FAX 804-786-3785, TDD 804-371-8504
An Equal Employment Opportunity/Affirmative Action Employer
Mr. Wayne Miller
October 10, 1990
Page Two
In the event that you would like additional information concerning
this matter, please forward a written request to this office.
Additionally, please let me know if you are interested in obtaining
a complete set of the project documents.
Sincerely,
William E.' rice
Capital Outlay Manager
Enclosure: "Excerpt" from the General Conditions of the Contract
for Capital Outlay Projects
cc: Dr. Marilyn C. Beck (w/o enclosure)
Mr. Al Smith (w/o enclosure)
RV
l�
0
1
G.S. Form E&B CO-7
(Revised 07-01-1990)
COMMONWEALTH OF VIRGINIA
GENERAL CONDITIONS OF THE CONTRACT FOR CAPITAL OUTLAY PROJECTS
INDEX
Section
Section
No.
TITLE
No.
1.
DEFINITIONS
26.
2.
CONTRACT DOCUMENTS
27.
3.
LAWS AND REGULATIONS
28.
4.
NONDISCRIMINATION
29.
5.
CONDITIONS AT SITE
30.
6.
TIME FOR COMPLETION
31.
7.
STANDARD FORMS
32.
8.
CONTRACT SECURITY
33.
9.
SUBCONTRACTS
34.
10.
SEPARATE CONTRACTS
35.
11.
CONTRACTOR'S AND SUBCONTRACTOR'S
36.
INSURANCE
12.
INSURANCE FOR OWNER AND CONTRACTOR
37.
13.
TAXES
38.
14.
PATENTS
39.
15.
ARCHITECT/ENGINEER'S STATUS
40.
16.
INSPECTION
41.
17.
SUPERINTENDENCE BY CONTRACTOR
42.
18.
CONSTRUCTION SUPERVISION, METHODS AND
43.
PROCEDURES
19.
SCHEDULE OF THE WORK i,.
44.
20.
SCHEDULE OF VALUES AND CERTIFICATE FOR
45.
PAYMENT
21.
ACCESS TO WORK
46.
22.
SURVEYS AND LAYOUT
47.
23.
DRAWINGS AND SPECIFICATIONS
48.
24.
SUBMITTALS
49.
25.
FEES, SERVICES AND FACILITIES
TITLE
EQUALS
AVAILABILITY OF MATERIALS
CONTRACTOR'S TITLE TO MATERIALS
STANDARDS FOR MATERIALS INSTALLATION AND
WORKMANSHIP
WARRANTY OF MATERIALS AND WORKMANSHIP
USE OF PREMISES AND REMOVAL OF DEBRIS
TEMPORARY ROADS
SIGNS
PROTECTION OF PERSONS AND PROPERTY
CLIMATIC CONDITIONS
PAYMENTS TO CONTRACTOR
PAYMENTS BY CONTRACTOR
CHANGES IN THE WORK
EXTRAS
CONTRACTOR'S RIGHT TO STOP WORK OR
TERMINATE THE CONTRACT
OWNER'S RIGHT TO TERMINATE THE CONTRACT
FOR CAUSE
TERMINATION BY OWNER FOR CONVENIENCE
DAMAGES FOR DELAYS; EXTENSION OF TIME
INSPECTION FOR SUBSTANTIAL
COMPLETION AND FINAL INSPECTION
GUARANTEE OF WORK
ASSIGNMENTS
CONTRACTUAL DISPUTES
ASBESTOS
TRAINING, OPERATION AND MAINTENANCE OF
EQUIPMENT
i4
2. CONTRACT DOCUMENTS
(a) The Contract entered into by the parties shall consist of the Form of Agreement; the bid
submitted by the Contractor; these General Conditions; the Supplemental General Conditions,
if any; the Special Conditions, if any; the drawings; the specifications including
everything listed in the Table of Contents though not specifically listed here; and all
modifications and addenda to the foregoing documents, all of which shall be referred tc
collectively as the Contract Documents.
(b) All time limits stated in the Contract Documents, including but not limited to the time for
completion of the Work, are of the essence of the Contract.
(C) The Form of Agreement shall be signed by the Owner and the Contractor in as many original
counterparts as may be mutually agreed upon.
(d) Anything called for by one of the Contract Documents and not called for by the others shalt
be of like effect as if required or called for by all, except that a provision clearly
designed to negate or alter a provision contained in one or more of the other Contract
Documents shall have the intended effect. In the event of conflicts among the Contract
Documents, the Contract Documents shall take precedence in the following order: the Form of
Agreement; the Supplemental General Conditions; the General Conditions; the Special
Conditions; the specifications with attachments; and the drawings.
(e) This Contract is an entire and integrated contract and is not severable.
3. LAWS AND REGULATIONS
(a) The Contractor shall comply with all laws, ordinances, rules, regulations and lawful orders
of any public authority bearing on the performance of the Work and shall give all notices
required thereby.
(b) This Contract and all other contracts and subcontracts are subject to the provisions of
Articles 3 and 5, Chapter 4, Title 40.1, Code of Virginia, relating to tabor unions and the
"right to work." The Contractor and its Subcontractors, whether residents or nonresidents
of the Commonwealth, who perform any work related to the project shall comply with all of
the said provisions.
(c) IMMIGRATION REFORM AND CONTROL ACT OF 1986: By signing this Contract, the Contractor
certifies that it does not and will not during the performance of this Contract violate the
provisions of the Federal Immigration Reform and Control Act of 1986, which prohibits
employment of illegal aliens.
(d) The provisions of all rules and regulations governing safety as adopted by the Safety Codes
Comission of the Commonwealth of Virginia and as issued by the Department of Labor and
Industry under Title 40.1 of the Code of Virginia shall apply to all work under this
Contract. Inspectors from the Department of Labor and Industry shall be granted access to
the work for inspection without first obtaining a search warrant from the court.
(e) Building Permit: Because this is a project of the Commonwealth of Virginia, codes or zoning
ordinances of local political subdivisions do not apply. Building permits where required
will be obtained and paid for by the Owner. This does not inctude any local license fees,
business fees or similar assessments which may be imposed by the appropriate political
subdivision.
• 0
COMMONWEALTH of VIRGINIA
DEPARTMENT OF CONSERVATION AND RECREATION
DIVISION OF SOIL AND WATER CONSERVATION
Regional Office
Route 4, Box 99-J
Staunton, Virginia 24401
Tel. (703) 332-9991
October 3, 1990
Mr. William E. Price
Capitol Outlay Manager
Virginia Community College System
101 North 14th Street
Richmond, Virginia 23219
RE: Lord Fairfax Community College (298) Planning for
Learning Resource Center, Item: C-34.1 (1989)
Project Code 14196
Dear Mr. Price:
Thank you for submitting the revised Erosion and Sediment
Control plan for the above referenced project. Your plan is
approved contingent upon the following:
1) All borrow and/or waste areas created as a result
of this project are subject to prior approval before
an area is utilized. All areas are subject to E&S
and must be stabilized, as addressed in the plan.
2) If desired, silt fence (Standard & Spec 1.06) may be
utilized in place of strawbale barrier shown on the plan.
Please note that if the strawbale barrier is retained
for use as a control, then replacement of the device will
be necessary, should project duration exceed life
expectancy of the device.
3) From the calculations (provided to us), we are not certain
that the storm sewer system will be capable of containing
runoff for storms upward to the 10 year design storm
event. Therefore, we will not accept responsibility for
drop inlet surcharge, or minor onsite flooding occurring
near the existing or proposed campus buildings.
4.
Letter to Mr. Price
October 3, 1990
Page 2
4) A temporary construction entrance may be required (once
construction is underway) if it is determined that
excessive erodible material is being tracked off the
project area.
5) Please note revisions made to the Erosion and Sediment
Control Narrative plan sheet C2 (temporary seeding is to
be done within 7 days, not 15 days).
Although your plan is conditionally approved, it should be
noted that Minimum Standards (as listed in the Erosion and Sediment
Control Regulations that were effective September 13, 1990) apply
to all land disturbing activities which may evolve from this
project.
Please notify me at least one week before the start of any
land disturbing activity related to this project. If you have any
questions, I can be contacted at (703) 332-9991.
JSM:chr
Enclosure: Plans
cc: Jimmy Edmonds
William W. Scott
Kris Tierney -
Lord Fairfax SWCD
Sincerely,
�iYl7,K�t2..�
J hn S. Mlinarcik, CPESC
Environmental Engineer
S E P 17 1990
Gauthier, Alvarado
and Associates Inc.
Architecture
Engineering
Planning
September 1, 1990
Mr. William E. Price
Capital Outlay Manager
Virginia Community College System
101 North 14th Street
Richmond, Virginia 23219
Re: Lord Fairfax Community College
Learning Resources Center
Dear Mr. Price:
Edward E. Alvarado
Alexander V. Dingwall
Michael C. Genovese
Robert Morris, III
Edwin C. Majer, Jr.
c
James A Schachner
Ralph E. Hoffman
We are forwarding, by Federal Express, eight sets of Prints and Specifications
(two sets highlighted in yellow), plus calculations and four additional sets
of civil prints.
We also are attaching responses to the Working Drawing Review Comments.
Since this office has only the original Kamstra, Dickerson & Associates
drawings, many of which had apparently already been altered in response to the
review comments, a significant number of the comments were somewhat difficult
to interpret. However, I believe we managed to do so on the majority.
If there are any questions regarding these documents, please do not hesitate
to call.
Sincerely,
�a�
Dorm n 0. Wyant,
DOW/ kw
�, (^-) 1a.J—
AIA
CONDMONAL APPROVAL
EROS10P3 AND SED1101FNT CONTROL PLAN
DSV'JC Prc;ect #
Conditionsfcra pr val ontairedinlettertosponscringstate
agency dated
REVIEWED
irginia Division cf Soil and Water Conservation
105 West Broad Street a Falls Church, Virginia 22046 9 (703) 241-2202
Gauthier, Alvarado
and Associates Inc.
105 West Broad Street
Falls Church, Virginia 22046
(703) 241.2202
LORD FAIRFAX COMMUNITY COLLEGE
NEW CONSTRUCTION: LEARNING RESOURCES CENTER
298-14196 C-34.1 (88-90)
RESUBMITTED WORKING DRAWING REVIEW
ARCHITECTURAL COMMENTS - P. G. McDonough, AIA
1. Complied.
2. Complied - fire extinguisher cabinets in base bid; Additive Bid Item
Number 2 deleted.
3. Complied.
4. Asbestos survey will be provided by VCCS, and included in Project Manual
following Geotechnical Report and Test Borings.
5. Complied - covered in Section 01421-2, 1.03D.
6. Complied.
7. Complied.
8. Complied.
9. Complied - covered in Section 01421-6, E.
10. Complied - VCCS Form G-1 has not been altered because it has been
reviewed and approved in this format.
11. Complied.
12. Complied.
13. Complied.
14. Complied.
15. Complied.
16. We prefer to refer to other sections as little as possible.
17. Complied - a detail for control joint similar to detail 3/A1/A11 will be
added.
18. Complied - see response above re: asbestos survey.
19. Complied.
20. Complied - roof drawings have been revised.
21. Complied.
1 of 4
22. Complied - cavity wall granular insulation has been changed to rigid
insulation on the inside of the wall. The masonry industry is strongly
advocating not using insulation in the cavity unless a minimum of a full
two inch clear cavity can be maintained.
23. Complied.
24. Complied.
25. Complied.
26. Complied.
27. Complied.
28. Complied.
29. Complied.
30. Complied.
31. Complied.
32. Complied - will be covered in a General Note.
33. Complied.
34. Complied - see response 4 and 20 above.
35. Complied - see response 20 above.
36. Complied.
37. Complied.
38. Complied - General Note on A-6.
39. See response 22 above.
40. Complied.
41. Complied.
42. See response 22 above.
43. Complied.
44. Complied - reference to manufacturer deleted.
45. Complied.
2of4
•
46. See attached letter from FDE LTD Consulting Engineers dated September 5,
1990
47. See response 46 above.
48. See response 46 above.
49. See response 46 above.
50. The use of overflow drains is a standard backup method for roof drainage.
MECHANICAL COMMENTS - P. G. McDonough, AIA
No Comment.
CIVIL COMMENTS - J. S. Shah
1. Complied - referred to VDOT standard detail.
ELECTRICAL COMMENTS - B. G. Schenk
Plans
1. Will comply.
2. Coordination of breaker and fuse sizes is done during shop drawing review
because there is no assurance of the specific manufacturer of the roof
top units.
3. The Electrical Engineer believes the conductors to be sized correctly.
4. The Electrical Engineer calculates that they are needed to serve a 3000A
switch.
5. The Electrical Engineer states that 240 V, 3 phase, 4 wire is the correct
specification for panel "LV".
6. The Duplex outlets and grid above the ceiling is for lights and equipment
for teleconferencing. The mechanical system is this area is ducted
return.
7. Will correlate.
8. The Electrical Engineer feels that 240V for panel "LV" is correct. NEMA
standard is 240V for 120/208 V distribution panel.
9. Complied.
3of4
•
10. Will comply.
11. Owner.
12. No, with possible exception of GFCI. Will reconfirm.
Specifications
1. See E5, Electrical Loads Summary.
2. Will comply.
FIRE PROTECTION ENGINEER COMMENTS - Charles J. Baker
3. The specifications have been rewritten. We do not name any manufacturers
of concrete masonry units. However, 04200-1, 1.02A of our specifications
specifically addresses this point.
4. Hardware set #11 specified for these doors includes exit devices.
5. This expansion joint has been deleted.
7. The structural design in this area has been revised.
DIVISION OF SOIL AND WATER CONSERVATION COMMENTS - John S. Mlinarcik
1. Complied - referred to Virginia Erosion & Sediment Control Handbook for
conservation practice details.
2. Calculations for the new section of storm sewer are attached.
3. Complied - Soils report in Project Manual.
4. Complied - Required number of plans will be provided.
4of4
E
•
fcbFDE LTD., CONSULTING ENGINEERS
Indian Run Office Building, Suite 420, 5250 Cherokee Ave., Alexandria, VA 22312, 703/642-0500, Fax 703/642-2473
September 5, 1990
Gauthier/Alvarado & Associates, Inc.
105 West Broad Street
Falls Church, Virginia 22046
Attn: Mr. Dorman Wyant
RE: Lord Fairfax Community College
FDE No.: 88-135.01
Dear Dorman:
We wish to make the following responses to the January
11, 1990 comments by Mr. Patrick McDonough regarding the
structural contract documents on the above project:
COMMENT # RESPONSE
46 We have analyzed the wind load imparted
to the base to determine if the steel
stud system is capable of resisting the
wind load. We believe that the con-
nection requirements at the base of a
steel stud wall would make that system
more costly than the steel angle system
we've shown.
47 & 49 It is common practice for the steel
fabricator to indicate hung plate sizes
and spacings on the structural steel
shop drawings. Practices differ between
different fabricating shops. We will
review the hanger plate sizes and
connections during the shop drawing
review stage.
48 We will indicate lintel size of noted
lintel on final submission. Angle
framing sizes at roof openings are
indicated on the structural drawings.
Detailing of curb bases, etc. is to be
indicated on the structural steel shop
drawings and coordinated between the
mechanical contractor and the general
contractor prior to the design teams
review. At that time, details and
Douglas N Eliron P E , Presrd; •a John 0 Woods Jr. P E. Vice President & Treasurer! lhercm M PeacocN I_ Secretary
•
u
Gauthier/Alvarado & Associates, Inc.
September 5, 1990
Page 2
connections of angle framing will be
evaluated. It is more expedient to do
it this way because the exact
requirements and sizes for the rooftop
equipment selected for this project are
not known at this time. Refer to
architectural comment responses
regarding flat roofs.
Please note that comments #46, 47, and 49 are repeats
from the October 6, 1989 comments and our response was
similar at that time.
Sincerely yours,
John M. Schneider, P.E.
✓0
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