HomeMy WebLinkAbout24-93 SP The Village At Millbrook SpecificationsEARTHWORK
1. SCOPE OF WORK
A. Extent: The work required under this section
consists of all excavating, filling, rough grading
and related items necessary to complete the work
indicated on the drawings and described in the
specifications. The Contractor shall notify in
writing the owners and the Engineer of any changes,
errors, or omissions found on the plans or in
the field, before work is started or resumed.
1. In general, the items of work to be
performed under this section shall include:
clearing and grubbing, removal of trees and
stumps (where required), protection of trees
to remain, stripping and storage of topsoil,
fill compaction and rough grading of entire
site.
2. Excavated material that is suitable may be
used for fills. All unsuitable material and
all surplus excavated material not required
shall be removed from the site. The
location of dump and length of haul shall be
the Contractor's responsibility.
3. Provide and place any additional fill
material from off the site as may be
necessary to produce the grades required.
Fill obtained from off site shall be of kind
and quality as specified for fills herein
and the source approved by the Owner.
4. The Contractor shall accept the site as he
finds it and shall remove all trash, rubbish
and debris from the site prior to starting
excavation.
B. Work not included: The following items of
related work are specified and included in other
sections of these specifications:
1. Excavation, grading and backfilling for
utility lines
2. Storm drainage systems
3. Sanitary sewer systems
4. Streets and paving
5. Water supply system
2. BENCH MARKS
Maintain carefully all bench marks, monuments and other
reference points; if disturbed or destroyed, contractor
shall contact engineer.
3. REMOVAL OF TREES
A. Remove all trees and stumps from area to be
occupied by road and surfaced areas. Removal of
trees outside these areas shall only be done as
noted on drawings or approved by the Owner.
B. All brush, stumps, wood and other refuse from the
trees shall be buried onsite or removed to disposal areas
off of the site. Disposal by burning shall not
be permitted unless proper permits are obtained
(where applicable). The location of on site bury
pits shall be designated by the owner or the
Engineer.
4. PROTECTION OF TREES
A. General Protection: The Contractor shall be
responsible for the protection of tops, trunks
and roots of existing trees on the project site
that are to remain. Existing trees subject to
construction damage shall be boxed, fenced or
otherwise protected before any work is started;
do not stockpile within branch spread. Remove
interfering branches without injury to trunks and
cover scars with tree paint,
5. HANDLING OF TOPSOIL
A. Remove all organic material from the areas to be
occupied by buildings, roads, walks and parking
areas. Pile and store topsoil at a location
where it will not interfere with construction
operations. Topsoil shall be reasonably free
from subsoil, debris, weeds, gross, stones, ect.
B. After completion of site grading and subsurface
utility installation, top soil shall be replaced
in areas designated on the erosion control plan
for seeding and/or sodding. Any remaining top
soil shall be used for finished grading around
structures and landscaping areas.
6. DISPOSITION OF UTILITIES:
A. Rules and regulations governing the respective
utilities shall be observed in executing all work
under this section.
B. If active utilities are encountered but not shown
on the drawings, the Engineer shall be advised
before work is continued.
C. Inactive and abandoned utilities encountered in
excavating and grading operations shall be
reported to the Engineer. They shall be removed,
plugged or capped as directed by the Utility
Company and the Engineer.
D. It shall be the responsibility of each contractor
to verify all existing utilties and conditions
pertaining to his phase of the work. It shall
also be the contractors responsibility to contact
the owners of the various utilities before work
is started.
7. SITE GRADING:
A. Grades: Contractor shall perform all cutting,
filling, compacting of fills and rough grading
required to bring entire project area to grade as
shown on the drawings.
B. Rough Grading: the tolerance for paved areas
shall not exceed 0.10 feet plus or minus above
the established subgrade. All other areas shall
not exceed 0.10 feet plus or minus the
established grade. All banks and other breaks in
grade shall be rounded at top and bottom.
C. Compaction Requirements:
1. All building pad areas shall be compacted to
standards specified by local and/or state
building codes.
2. For compaction requirements of paved areas,
see street specifications.
8. Earth Work Balance
The Contractor shall confirm all earthwork quantities
prior to start of construction. If an excess or
shortage of earth is encountered, the Contractor shall
confirm with the Owner and Engineer the requirements
for stockpiling, removal or importing of earth.
Minor adjustments to the grades may be required to
earthwork balances when minor excess material or
shortages are encountered. It is recognized by the
parties hereto that the calculations of the Engineer
in determining earthwork quantities shall be ac-
complished in accordance with the American Society of
Civil Engineers Standards for such calculations.
Further, that these calculations are subject to the
interpretations of soil borings as the physical limits
of the various soil types, also the allowable variation
in finish grade and compaction permitted the contractor,
and that all of these parameters may cause either an
excess or shortage of actual earthwork materials to
complete the project. If such an actual minor excess or
shortage of materials occurs, the contractor shall
contact the engineer to determine if adjustment can be
made to correct the imbalance of earth.
CLAY TOWNSHIP REGIONAL WASTE DISTRICT
1. Standard specifications of the Clay Waste District and
Indiana Department of Highways shall apply for all work
and materials. Pipe shall be installed in accordance
with Section 715.
2. Sanitary sewer pipe shall be PVC in accordance with ASTM
D-3034 (S.D.R. 35) and ASTM 2321, PVC pipe shall have
grooved bell and gasket. The pipe shall be made of PVC
plastic having a cell classification of 124548.
3. PVC sewer fittings shall conform to the requirements of
ASTM D-3034-89 specification. Fittings in sizes through
8" shall be molded in one piece with elastomeric joints
and minimum socket depths as specified in sections 6.2 and
7.3.2. Fittings 10" and larger shall be molded or
fabricated in accordance with section 7.11 with manufacturers
standard pipe bells and gaskets. Wall thickness of
fittings shall be SDR 26 as defined in section 7.4.1 of the
specifications. Gaskets for elastomeric joints shall be
molded with a minimum cross -sectional area of 0.20 square
inches and conform to ASTM F-477 specification. Fittings
shall be manufactured by Harco or equal.
4. All sanitary manholes shall be "precast concrete" manholes
in accordance with ASTM C?478 and Section 710. 0-Rings
shall conform to C-443. Kent Seal or equivalent shall also
be applied to all joints and between riser rings and castings.
Manhole step spacing shall be no more than 16 inches.
5. Butyl rubber coating shall be applied around each manhole
joint from 6 inches above to 6 inches below each joint. The
appropriate primer shall be applied prior to applying the
rubber coating. Inside joints to be filled with precoat
plug material.
6. The casting elevations are set by plan. However, the
castings are to be adjusted in the field by the Engineer's
representative, should a discrepancy occur between plan grade
and existing grade. New manhole ring and cover shall be
installed to establish grade. Maximum height of adjusting
rings shall be 12 inches.
7. Backfill around all structures and all cuts under paved areas
with granular material. Trenches opening within 5 feet of
paved roadways shall be backfilled with granular material in
accordance with Section 211. Backfill under sidewalks shall
be granular, unless the walks are constructed a minimum of 6
months after backfill has been in place.
8. The Contractor shall be responsible for verifying that all
state highways, city and county permits have been obtained
by the developer prior to start of construction.
9. The Contractor shall be required to furnish the developer's
Engineer with a set of prints, marked in red pencil, showing
actual sewer location and invert, to include lateral location,
depth and length. Such "as -built" prints must be received by
the Engineer before the final contract payment can be
authorized. The sanitary sewer laterals and stubs termination
shall be indicated on the surface with a metal fence post set
immediately above said termination point.
10. All sanitary sewer lines upon completion will be required to
pass an infiltration weir test and a low pressure air test,
unless otherwise directed by the Engineer. Said test shall
be conducted according to NCPI Standard Method, and shall be
witnessed by an Engineer and a representative of the Clay
Waste District.
11. Deflection tests shall be performed on all flexible* pipe
after the final backfill has been in -place at least 30 days.
No pipe shall exceed a vertical deflection of 5 percent
deflection test results. (*The following are considered
non -flexible pipes: concrete pipe, ductile iron pipe and
cast iron pipe). The deflection test shall be performed
with a nine point mandrel. Proving rings shall be available.
12. All mandrel testing shall be observed by a Professional
Engineer for certification and a representative of the
Clay Waste District.
13. The ends of laterals are to be plugged tight with a braced
plastic disc or cap capable of withstanding a low pressure
air test without leakage.
14. Bedding for flexible pipe shall be No. 8 crushed stone
from 6 inches below the pipe to 12 inches above the pipe.
Bedding for rigid pipe shall be No. 8 crushed stone from
6 inches below the pipe to the spring line of the pipe and
from this point to 12 inches above shall be fill sand or
equivalent. Manholes shall be placed on no less than 6 inches
of No. 8 crushed stone bedding.
15. Water and sewer line crossings and separations shall be in
accordance with Ten States' Standards.
16. Trench shall be opened sufficiently ahead of pipe laying
to reveal obstructions, and shall be property protected
and/or barricaded when left unattended.
17. No water shall be permitted to flow into the sanitary
sewer system during construction. Contractor shall utilize
a pump to keep the water level below the pipe. Pump
discharge shall be directed to a storm outlet. Any pipe
entering existing sewers shall be plugged, until such time
as all tests on the sewers have been completed and the lines
have passed all punch lists.
18, All sewer laterals installed by the mainline Contractor
shall be bedded the some as the main line sewer.
19. Forty-eight (48) hours notice shall be given to the Clay
Regional Waste District prior to the start of sewer construction.
Also, 48 hours notice shall be given prior to any testing
done on the sewer.
20. Manhole castings shall be stamped 'SANITARY SEWER' (Neenah
Casting R 1642 or equal) and be self?sealing type. Waterproof
castings shall be Neenah R-1916-F1 and stamped "Sanitary Sewer".
21. The minimum slope for sewer acceptance by the Clay Township
Regional Waste District are:
Size of Pipe Minimum Constructed Slope
8 inch 0.40%
10 inch 0.28%
12 inch 0.22%
15 inch 0.15%
18 inch 0.12%
22. The Contractor shall provide measurements of the slope
of the sewer for each manhole section as construction
progresses. Such measurements shall be certified by a
Registered Land Surveyor or Engineer and be available
on -site for observation by the District's Inspector. No
more than three manhole sections can be constructed in
advance of such measurement.
23. In the event the Contractor does not meet the minimum
slopes, the sewer section and any other affected sewer
sections shall be reconstructed to meet such minimurn slopes.
STORM SEWER SYSTEMS
STREETS
G. Concrete Walks and Exterior Steps
1. SCOPE OF WORK
1. Slopes - Provide 1 /4 inch per foot cross
slope. Make adjustments in slopes at walk
The work under this section includes all storm sewers,
1. SCOPE OF WORK
intersections as necessary to provide proper
storm water inlets, and related items, including
drainage.
excavating and backfilling, necessary to complete the
The work required under this section includes all
work shown on the drawings.
concrete and bituminous paving and related items
2. Dimensions - Walks and steps shall be one
necessary to complete the work indicated on drawings
course construction and of widths and details
2. MATERIALS
and described in the specifications, including but not
shown on the drawings.
limited to:
A. Storm Sewers
3. Finish - Screed concrete and trowel with a
All streets, parking areas in contract limits
steel trowel to a hard dense surface after
1. Reinforced concrete sewer pipe shall confirm
Curbs and gutters
surface water has disappeared. Apply medium
to ASTM C-76 latest revision, with joints
Sidewalks and concrete slabs, exterior steps
broom finish and scribe control joints at 5
conforming to ASTM C-443 latest revision.
foot spacing. Provide 1/2" expansion joints
When storm pipe is submerged
2. MATERIALS
where sidewalks intersect, and at a maximum
spacing of 48 feet between expansion joints.
V)B.
Manholes
A. Concrete - Concrete shall be ready -mixed concrete
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and shall be a mix of proportioned fine and
H. Curing Concrete - Except as otherwise specified,
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1. Precast reinforced concrete manhole sections
coarse aggregates with Portland cement and water.
cure all concrete by one of the methods described
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and steps shall conform to ASTM C-478 latest
Minimum cement content shall be 6 bags per cubic
in Section 501.17 of the Indiana Department of
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revision.
yard of concrete and maximum water content shall
Transportation Specifications, latest revision.
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be 5.5 U.S. gallons per sack of cement, including
2. Costing shall be of uniform quality, free
moisture in the aggregate. Slump for normal
1. Bituminous Pavement - Hot asphalt concrete
from blow holes, porosity, hard spots,
weight concrete shall be a maximum of 4 inches
pavement shall be as specified in Section 403 of
shrinkage distortion or other defects. They
and a minimum of 2 inches. the slump of machine
the Indiana Department of Transportation
shall be smooth and well cleaned by shot
placed concrete shall be no less than 1-1/4
Specifications latest revisions. Paving will not
-blasting or by some other approved method.
inches nor more than 3 inches. Standard test
be permitted during unfavorable weather or when
They shall be coated with asphalt paint
ASTM C-143 shall be used to measure slump.
the temperature is 40 degrees F. and falling.
which shall result in a smooth coating,
Compressive strength of concrete at 28 days shall
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tough and tenacious when cold, not tacky or
be 4000 psi. All exterior concrete shall have
J. Compacted Aggregate Subbase - the thickness shown
brittle. They shall be gray iron meeting
air entrainment of 5% to 8% by volume per ASTM C
on the drawings is the minimum thickness of the
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ASTM A-48 latest revision.
-260. Retempering of delivered concrete will not
fully compacted subbase. Compaction shall be
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be allowed. Concrete shall be composed of:
accomplished by rolling with a smooth wheeled
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3. Joints - Manhole sections shall be jointed
roller weighing 8 to 10 tons. Compact to 90%
with rubber type gaskets. The rubber type
1. Portland cement - Conforming to ASTM C-150,
compaction using Standard Testing Procedures.
gaskets shall meet ASTM C-443 latest
Type IA or Type IIIA.
Along curbs, headers and walls and at all placed
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revision. When manhole and storm pipe are
not accessible to the roller, the aggregate
continuously in water.
2. Aggregates: Conforming to ASTM C-33
material shall be tamped with mechanical tampers
or with approved hand tampers.
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C. SUBDRAINS
3. Water - Shall be clear and free from
injurious amounts of oils, acids, alkalies,
1. Perforated plastic pipe subdrains shall
organic materials or other deleterious
WATER MAINS:
conform to ASTM F-405.
substances.
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A. Water mains are designed and installed by The Indianapolis
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3. APPLICATION
B. Welded Steel Wire Fabric - Where required for
Water Company.
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concrete reinforcement shall conform to ASTM A185.
A. Permits and Codes - The intent of this section of
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the specifications is that the contractor's bid on
C. Premoulded Joint Filler - Shall be of nonk-'
the work covered herein shall be based upon the
-extruding type meeting ASTM D-544 except that
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drawings and specifications but that the work
premoulded joint filler used in concrete walk
shall comply with all applicable codes and
construction may be either non -extruding or
regulations as amended by any waivers. Contractor
resilient.
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shall furnish all bonds necessary to get permits
for cuts and connections to existing sewers.
D. Bituminous Pavement Materials - All materials
proposed for the construction of bituminous
B. Local Standards - the term "Local Standards" as
pavements shall comply with the Indiana Department
used herein means the standards of design and
of Transportation specifications, per latest
construction of the respective municipal
department
revision.
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or utility company.
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E. Compacted Aggregate Subbase: Shall be crushed
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C. Existing Improvements - Maintain in operating
stone or gravel. Crushed gravel shall be aQ�,b
condition all active utilities, sewers and other
minimum of 35% crushed material. Chert shall be
drains encountered in the sewer installation.
limited to o maximum of 8% of the total. Material
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Repair to the satisfaction of the owner any damage
shall be free from an excess of flat, elongated,
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to existing active improvements.
thinly laminated, soft or disintegrated pieces;
be free from fragments
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D. Workmanship - To conform to all local, state and
and shall coated with dirt.
Compacted aggregate shall be
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graded
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codesby all local and
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state agencies having jurisdiction.
SIEVE
SIEVE SIZE % PASSING
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E. Trenching - Lay all pipe in open trenches, except
1-1/2" 100
when the local authority gives written permission
1" 80-100
for tunneling. Open the trench sufficient ahead
3/4" 70-90
of pipelaying to reveal any obstructions. The
1/2" 55-80
width of the trench shall be the inside pipe
#4 35-60
diameter plus 24 inches for 12 inches above the
#8 25-50
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pipe. Sheet and brace trench as necessary to
#30 12-30
protect workmen and adjacent structures. All
#200 5-10
trenching to comply with Occupational Safety and
Health Administration Standards. Keep trenches
3. APPLICATION
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free from water while construction is in progress.
Under no circumstances lay pipe or appurtenances
A. Grading - Do any necessary grading in addition to
in standing water. Conduct the discharge from
that performed in accordance with Earthwork
trench dewatering to drains or natural drainage
Section, to bring subgrades, after final
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compaction, to the required grades and sections
for site improvement.
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F. Special Supports - Whenever in the opinion of the
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Engineer the soil at or below the pipe grade is
B. Preparation of Subgrade - Remove spongy and
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unsuitable for supporting sewers and appurtenances
otherwise 'unsuitable material and replace with
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specified in this section, such special support,
stable material. No traffic will be allowed on'
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in addition to those shown or specified, shall be
prepared subgrade prior to paving.
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provided as the Engineer may direct, and the
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contract will be adjusted.
C. Compaction of Subgrade - The first 6 inches below
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the subgrade shall be compacted to at least 100%
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G. Backfilling - for a depth of at least 12 inches
of the maximum dry density as determined by the
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above the top of the pipe, backfill with earth or
provisions of AASHO T-99. Water shall be
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granular material free from large stones, rock
prevented from standing on the compacted subgrade.
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fragments, roots or sod. Tamp this backfill
thoroughly, taking care not to disturb the pipe.
D. Utility Structures - Check for correct elevation
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For the remaining trench depth, backfill with
of all manhole covers, valve boxes and similar
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earth or granular material containing stones or
structures located within areas to be paved, and
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rocks not larger than 4 inches. Backfill under
make, or have made, any necessary adjustments in
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and within 5' of walks, parking areas, driveways
such structures.
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and street shall be granular material only -
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thoroughly compacted by approved methods.
E. Placing Concrete
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H. Manhole Inverts - Construct manhole flow channels
1. Subgrade - Place concrete only on a moist,
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of concrete sewer pipe or brick, smoothly finished
compacted subgrade or base free from loose
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and of semi -circular section conforming to the
material. Place no concrete on a muddy or
inside diameter of the connecting sewers. Make
frozen subgrade.
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changes in size or grade gradually and changes in
direction by true curves. Provide such channels
2. Forms - All forms shall be free from warp,
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for all connecting sewers at each manhole.
tight enough to prevent leakage and
1. Subdrains - All subdrains shall be of the size
substantial enough to maintain their shape
shown on the plans and shall be constructed to the
and position without springing or settling,
when concrete is placed. Forms shall be
grades shown. All drains constructed off -site as
clean and smooth immediately before
part of the outlet drain will be located as shown.
concreting.
J. Utilities - It shall be the responsibility of each
3. Placing Concrete - Concrete shall be
contractor to verify all existing utilities and
deposited so as to require as little
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conditions pertaining to his phase of the work.
rehandling as practicable. When concrete is
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It shall also be the contractors responsibility to
to be placed at on atmospheric temperature of
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contact the owners of the various utilities before
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35 degrees F. or less, paragraph 702.10 of
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work started. The contractor shall notify in
the Indiana Department of Transportation
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writing the owners or the engineer of any changes,
Specifications latest revision shall be
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errors or omissions found on these plans or in the
followed.
field before work is started or resumed.
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F. Concrete Curb
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K. Contractor to grout joints inside storm
structures where pipes enter or exit
1. Expansion Joints - Shall be 1/2 inch thick
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and between structure and casting.
premoulded between storm structures do curb.
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2. Contraction/Control Joints - Unless otherwise
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provided, contraction joints shall be sawed
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or scored joints spaced 10 feet on center, except for
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intersection radii where joints shall be placed 5' o.c.
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3. Finish - Tamp and screed concrete as soon as
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placed, and fill any honey combed places.
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Finish square corners to 1/4" radius and
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other corners to radii shown.
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