HomeMy WebLinkAbout04090009-10.12STORM SEWER SYSTEMS
8. EARTH WORK BALANCE
EARTHWORK as E. Bituminous Pavement - Hot halt concrete 1. SCOPE OF WORK
A. The Contractor shall confirm all earthwork quantities P
1. SCOPE OF WORK pavement shall be as specified in Section 400 -410
prior to start of construction. If an excess or P P
shortage of earth is encountered, the Contractor of the Indiana Department of Transportation The work under this section includes all storm sewers,
A. Extent: The work required under this section shall confirm with the Owner and Engineer the Specifications latest revisions. Paving will not storm water inlets, and related items, including
consists of all work re excavating, filling, rth h radon requirements for stockpiling, removal or importing be permitted during unfavorable weather or when excavating and backflling, necessary to complete the
g grading of earth. the temperature is not in compliance with section work shown on the drawings. All work and materials shall
and related items necessary to comp ete the work 401.05 of the INDOT Specifications. meet local specifications.
indicated on the drawings and described in the B. Minor adjustments to the grades may be required
sppecifications. The Contractor shall notify in writing g y F. Utility tructures - Check for correct elevation 2. MATERIALS
the owners and the Engineer of any changes, errors to earthwork balances when minor excess material of an manhole covers, valve boxes and similar
or shortages are encountered. It is recognized
or omissions found on a plans or in the field structures located within areas to be paved, and A. Storm Sewers
by the parties hereto that the calculations of the
before work is started or resumed. the Engineer in determining earthwork quantities make, or have made, any necessary adjustments in
shall be accomplished in accordance with the such structures. 1. Reinforced concrete sewer pipe shall conform
American Society of Civil Engineers Standards for to ASTM C -76 latest revision, with joints
1. In general, the items of work to be such calculations. Further, that these calculations G. Placing Concrete conforming to ASTM C -443 latest revision when
performed under this section shall include: are subject to the interpretations of soil borings storm pipe is continuously submerged in water.
clearing pad grubbing, Cemoval of trees and as the physical limits of the various sol types, 1. Subgrode - Place concrete only on a moist,
stumps )where required), protection of trees coin acted subgrade or base free from loose
the allowable variation in finish grade and compaction P . 9 2. Aluminized type 2 corrugated steel pin shall
to remain, stri pping and storage of topsoil, permitted the contractor, and that all of these material. Place no concrete on a muddy or be manufactured ig a dance with AASHTO M36
fill compaction and rough grading of entire parameters may couse either an excess or shortage frozen subgrade. (tie I withL 2.2/3 x�2 corrugation ,for
site. of actual earthwork materials to complete the project. 1111ZZ__ and 15 ciJameters; type IR wit' x
If such an actual minor excess or shortage of 2. Forms - AN forms shall be free from warp, 3/4' x 7 1/2 corrugations for 18 diameter
2. Excavated material that is suitable may be the contractor shall contact the tight enough to prevent leakage and substantial and larger. The pipe shall be formed from
materials occurs, �p
used for fills. All unsuitable material and Engineer to determine if ad' stment can be made enough to maintain their shape and position without an aluminized steel type 2 col that conforms
all surplus excavated material not required rin m or setting, when concrete is laced.
to correct the imbalance o earth. 9 9 P to AASHTO M274. The minimum gage thickness of
shall be removed from the site. The Forms shall be clean and smooth and coated with e shall be as follows:
:
location of durpp and length of haul shall be form release before placement of concrete. the p meter
the Contractors responsibility. 9. TESTING
3. Placing Concrete - Concrete shall be 12' - 36; 16
3. Provide and place any additional fill A. Contractor shall hire at Contractors expense an independent deposited so as to require as little 42„ - 48, 14
material from off the site as may be soil testing service to assure soil compaction with scope rehandling as practicable. When concrete is 54 - 84 12
necessary to produce the grades required. of testing to be op roved by Engineer. Copies of test results to be placed at an atmospheric temperature of
Fill obtained from off site shall be of kind shall be submitted to the Engineer. 35 degrees F. or less, paragraph 702.10 of 3. High density pol yethylene pipe shall perform
and quality as specified for fills herein the Indiana Department of Transportation to AAS TO M252 an? M24 Type S specifications,
and the source approved by the Owner. Specifications latest revision shall be latest revision, and shall have material
4. The Contractor shall accept the site as he followed. specifications conforming to ASTM D1248 or
finds it and shall remove all trash, rubbish STREETS AND PAVING H. Concrete Curb D3350, latest revision.
and debris from the site prior to starting
excavation. 1. Expansion Joints - Shall be 1/2 inch thick B. Manholes
premoulded at ends of all returns and at a 1. Precast reinforced concrete manhole sections
B. Work not included: The following items of 1. SCOPE OF WORK maximum spacing of 100 feet. and steps shall conform to ASTM C -478 latest
related work are specified and included in other revision.
sections of these specifications: A. The work required under this section includes all 2. Contraction Joints - Unless otherwise
concrete and bituminous paving and related items provided, contraction joints shall be sawed 2. Casting shall be of uniform quality, free
1. Excavation, grading and backfilling for necessary to complete the work indicated on drawings joints spaced 20 feet on center. from blow holes, porosity, hard spots,
utility lines and described in the specifications, including but not shrinkage distortion or other defects. They
limited to: 3. Finish - Tamp and screed concrete as soon as shall be smooth and well cleaned by shot
2. Storm drainage systems placed, and fill any honey rognbed places. -blasting or some other roved method.
All streets, parking areas in contract limits Finish square comers to 1 4 radius and g y appp
Curbs and gutters. � They shall be coated with asphalt paint
3. Sanitary sewer systems 9u other comers to radii shown. which shall result in a smooth coating,
Sidewalks and concrete slabs, exterior steps. tough and tenacious when cold, not tacky or
4. Streets and paving I. Concrete Walks and Exterior Steps brittle. They shall be gray iron meeting
5. Water supply system 1. Slopes - Provide 1/4 inch per foot cross
slope. Fake adjustments in slopes at walk 3. Joints - Manhole sections shall be jointed
2. BENCH MARKS intersections as necessary to provide proper with rubber type gaskets. The rubber type
drainage. gaskets shall meet ASTM C -443 latest
Maintain carefully all bench marks, monuments and other A. Concrete - Concrete shall be read mixed concrete revision. When manhole and storm pipe are
other reference points; if disturbed or destroyed, 2. Dimensions - Walks and steps shall be one continuously in water.
Contractor shall pontact engineer. Replacement shall and shall be a mix of proportioned fine and coarse course construction and of widths and details
be at Contractors expense. aggregates with Portland cement and water. shown on the drawings. 4. Shop Drawings - Contractor to submit storm sewer
Minimum cement content shall be 6 bogs per cubic structure precast drawings to engineer for approval prior
3. REMOVAL OF TREES yard of concrete and maximum water content shall 3. Finish - Screed concrete and trowel with a to installation.
be 5.5 U.S. gallons per sack of cement, including steel trowel to a hard dense surface after
A. Remove all trees and stumps from area to be moisture in the aggregate. Slump for normal weight surface water has disappeared. Apply medium
C. SUBDRAINS
occupied by road and surfaced areas. Removal of concrete shall be a maximum of 4 inches and a broom finish and scribe co coSntrol joints at 5
trees outside these areas shall only e done as minimum of 2 inches. The slump o machine place foot s akin . Provide 1 2 expansion rots
y concrete shall be no less than 1 -1 4 inches nor spacing. Pa j° 1. Perforated plastic _pippe subdroos shall conform
noted on drawings or approved by the Owner. where sidewalks intersect, and at a maximum to ASTM F -405 AASHTO M -252 4 to 10 pipe).
more than 3 inches. Standard test ASTM C -143
B. All brush, stumps, wood and other refuse from shall be used to measure slump. Compressive spacing of 48 feet between expansion joints. 3. APPLICATION
the trees shall be removed to strength of concrete at 28 days shall be 4000 psi. J. Curing Concrete - Except as otherwise specified,
disposal areas off of the site. Disposal by burning All exterior concrete shall have air entrainment of cure all concrete b one of the methods described A. Permits and Codes - The intent of this section of
shall not a permitted unless proper permits are 5% to 8% by volume per ASTM C -260. Retempering on
obtained where applicable). The location of on -site delivered concrete will not be allowed. Concrete shall T Section 501.5 o the Indiana Department of the specifications is that the contractor's bid he
be composed of: Transportation Specifications, latest revision. the work covered herein shall be based upon the
bury pits shall be approved by the owner and the P drawings and specifications but that the work
Engineer if permitted. shall comply with all applicable codes and
1. Portland cement - Conforming to ASTM C -150, regulations as amended by any waivers. Contractor
4. PROTECTION OF TREES Type IA or Type INA. UTILITIES shall furnish all bonds necessary to get permits
2. Aggregates- Conforming to ASTM C -33 for cuts and connections to existing sewers.
A. General Protection: The Contractor shall be 99r'e9 9 S 1. WA Contractor shall notify the local governing jurisdiction
responsible for the protection of tops, trunks a minimum of 72 hours prior to the commencement
and roots of existing rees on the project site 3. Water - Shall be clear and free from
g � Je A. All water mains and service lines shall be installed and tested in accordance of storm sewer construction.
that are to remain. Existing ees subject to injurious amounts of oils, acids alkalis,
9
construction damage shall be boxed, fenced or organic materials or other deleterious with local standards and requirements. B. , Local Standards - the term 'Local Standards' as
otherwise protected before any work is started; used herein means the standards of design and
do not stockpile within branch read. Remove 2. GAS
P B. Welded Steel Wire Fabric -Where required for construction of the respective municoal
interfering branches without injury to trunks and q department or utility company.
cover scars with tree paint. concrete reinforcement shall conform to ASTM A185. Gas mains shown in the plans are for information only. The local gas
5. HANDLING OF TOPSOIL utility is responsible for final design and installation o new gas moms. C. Existing mprovements - Maintain in operating
C. Premoulded Joint Filer -Shall be of non condition all active utilities, sewers and ther
- extruding type meeting ASTM D -544 exce that 3. OTHER UTILITIES drains encountered in the sewer installation.
A. Remove all organic material from the areas premoulded joint filler used in concrete wail Repair to the satisfaction of the owner an damage
to be occupied b buildings, roads, walks and construction may be either non - extruding or Electric Telephone, , and CAN lines shown in the plans are for information �a y
p rile 9 P to existing active improvements.
parking, areas. ile and store topsoil at a location resilient. only. the local utility companies are responsible for final design and installation
Where it will not interfere with construction D. Bituminous Pavement Materials -All materials of their respective utility lines. D. Workmanship - To conform to all local, state and
operations. Topsoil shall be reasonably free from Bituminous for the construction of bituminous national codes and to be approved by all local and
subsoil, debris, weeds, grass, stones, etc.. pop
pavements shall comply with the Indiana Department 4. TRACING WIRE state agencies having jurisdiction.
B. After lemon of site gradii and subsurface of Transportation specifications, per latest 9 9 g _ y pip except
1 Tracing wires to be installed on all underground utilities and conduit. E. Trenching La all a in trenches, exc t
utility installation, top son shalr be replaced in revision. when the local authority gives written permission
areas design ted on the erosion control plan for for tunneling. Open the trench sufficient ahead
seeding and/or sod. An remaining topsoil shall E. Compacted Aggregate Subbase: Shall be crushed
9 stone or avd Crushed ravel shall be a of pipe laying to reveal any obstructions. The
be used for finished grading around structures 9r 9 width of the trench shall be the inside i
and landscaping areas. minimum of 35% crushed material. Chert shall be P Pe
P g limited to a maximum of 8% of the total. Material pi et Sheet and inches for a ne�ces�saory to
shall be free from an excess of flat, elongated, protect workmen and adjacent structures. All
6. DISPOSITION OF UTILITIES: thinly laminated, soft or disintegrated pieces; tie test g to e n a with Occupational atiuct es. and
and shall be free from fragments coated with dirt. Health ICd tqn 9raiion Standards. K trenches
A. Rules and regulations governing the, respective Compacted aggregate shall be graded as follows: free from water while construction Keep progress
utilities is sect observed in executing all work SIEVE SIZE % PASSING iUrnnstanding water. stand uc pi or appurrtfr aces
under this section. 1 -1 2 100 trench dewatering to drains or natural drainage
B. If active utilities are encountered but not shown / channels.
shown on the drawings, continued. shall be 1 - 80-100 F. $�ecid Su arts - Whenever in the onion of the
advised before work is continued. 1 /2' X80 En ' the son at h below the pipe
C. Inactive and abandoned utilities encountered in 25 -50 unsuitable for supporting sewers and appurtenances
excavating and cueing operations small be fled in this section, such special su pport,
reported to the Engineer. They shall be removed, 200 15_10 addition to those shown orecified, shall be
plugged or capped as directed by the Utility provided as the Engineer may direct, and the
Company or the Engineer. 3. APPLICATION contract will be od lusted.
D. It shall be the responsibility of each contractor
to verify all existingg utilities and conditions A. Grading - Do any necessary grading in addition to G. above th- - for a depth of at least 12 inches
pertaining to his phase of the work. It shall that performed in accordance with Earthwork above the top of the pipe, badkfili with earth or
anukir material free from large stones, rock
also be a contractors responsibility to contact Section, to brim subgrades, after find 9
the owners of the various utilities before work compaction, to he required grades and sections rogments, roots or sod. Tamp this backfill
thoroughly, taking care not to disturb the pipe.
is started. for site improvement. For the remaining trench depth, backfilI with earth
or granular material containin g stones or rocks n t
B. Preparation of Subgrade - Remove spongy and larger than 4 inches. Backfill� under and within 5Q
7. SIZE GRADING: otherwise unsuitable material and replace with of areas shill be granular material oil and
stable material. No traffic will be allowed on shell conform to local standards - y
A. Grades: Contractor shall perform all cutting, prepared subgrade prior to paving. thoroughly filling, compacting of fills and rough grading 9 Y c ompacted by approved methods.
required to bring entire project area to grade as C. Compaction of Sub ode - The first 6 inches below
shown on the drawings. the subgrade shall be compacted to at least 100% H. Manhole Inverts - Construct manhole flow channels
of the maximum dry density as determined by the of concrete sewer pipe or brick, smoothly finished
B. Rough Grading: the tolerance for paved areas provisions of AASHTO T -99. Water shall be and of semicircular section conforming to the
shall not exceed 0.10 feet plus or minus above prevented from standing on the compacted subgrade. inside diameter of the connecting sewers. Make
the established subqrade. All other areas shall changes in size or grade gradually and changes in
not exceed 0.10 feet plus or minus the D. Compacted Aggregate Subbase - the thickness shown direction by true curves. Provide such channels
established g9rade. All banks and other breaks in on the drawings is the minimum thickness of the for all connecting sewers at each manhole.
grade shall 6e rounded at top and bottom. fully compacted subbase. Compaction shall be
accomplished by rolling with a smooth wheeled I. Subdroins - All subdrains shall be of the size
C. Compaction Requirements: roller weighing 8 to 10 to s. Compact to 95% shown n the plans and shall be constructed to the
standard proctor density r m ASTM D698) grades shown. All drains constructed off -site as
1. All areas under building pods ans paved areas Along curbs, headers and walls and at all placed part of the outlet drain will be located as shown.
shall be compacted to 95% standard proctor density. not accessible to the roller, the aggggrregate
material shall be tamped with mecianical tampers
2. All other fill areas shall be compacted to 90% or with approved hand tampers. J. Utilities - It shd be the responsibility of each
standard proctor density. contractor to venfY all existing utilities 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. The contractor shall notify in
writing the owners or the engineer of any changes,
errors or omissions found on these plans or in the
field before work is started or resumed.
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STATE OF
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DATE:
SHEET
C901
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11