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HomeMy WebLinkAbout08 SpecificationsEARTHWORK 1. SCOPE OF WORK A. Extent: The work r equired under this section consists of all excavating, filling, rough grading and related items necessary to complete the work i indicated on the drawings and described in the specifications. The Contractor shall notify in writing the owners and the En ineer of any changes, errors or omissions found on the plans! or in the field i before work is started or resumed. 1. In general, the items of work to be performed under this section shall include: clearing pnd grubbing, emoval of trees and stumps where required), protection of trees to remain, stripping an storage oft soil, 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 durpp aid length of haul shall be the Contractors responslblity. 3. Provide aid place any additional fill material from off the site as may be necessor to produce the grades required. Fill obtained from off site shall be of kind and qu ality 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 other reference points; if disturbed or destroyed, Contractor shall pontact engineer. Replacement shall be at Contractors expense. 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 removed to disposal areas off of the site. Disposal by burning shall not pe permitted un ess prompermfts are obtained (where applicable). The ion of on -site bury pits shall be approved by the owner and the i Engineer if permitted. 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 in jury to trunks and cover scars with tree paint. 5. HANDLING OF TOPSOIL A. Remove all orqanic 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, etc.. B. After completion of site adin and subsurface utility installation, top solshaiF be replaced in areas design ted on the erosion control plan for seeding and or sod. Any remaining topsol 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 shown on the drawings, the Engineer shall be advised before work is continued. C. Inactive and abandoned utilities encountered in excavating and tr ading operations shall be reported to the Engineer. They shall be removed, plugged or capped as directed by the Utility Company or the Engineer. D. It shall be the responsibility of each contractor to verify all existing utilities and conditions pertaining to his phase of the work. It shall also be the contractors resopns`blity 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 sub ode. All other areas shall not exceed 0.10 feel us or minus the established erode. All banks and other breaks in grade shall be rounded at top and bottom. C. Compaction Requirements: 1. All areas under building ads and paved areas shall be compacted to 959: standard proctor density. 2. All other fill areas shall be compacted to 90% standard proctor density. 8. EARTH WORK BALANCE A. 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. B. 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 the Engineer in determining eorthwork quantities shall be accomplished in accordance with the American Society of Civil En Standards for such calculations. Further, that these calculations are subject to the int erpretotiions of soil borings as the phys'col limits of the various soil types, the allowable variation in finish grade and compaction permitted the contractor, and that all of these parameters may couse either an excess or shortage of actual earthwork materials to complete the project. If such an actual minor excess or shorts a of materials occurs, the contractor shall contact the Engineer to determine if ad' stment can be made to correct the imbalance of earth. 9. TESTING A. Contractor shill hire at Contractors expence an independent soil testing service to assure soil compaction with scope of testing to be op roved by Engineer. Copies of test results shall be submitted to the Engineer. SANITARY SEWER SYSTEMS 1. SCOPE OF WORK A. The work under this section includes all sanitary sewers, manholes, cleonouts and related items including excavating and backfilling, necessary to complete the work shown in the drawings, starting five feet outside the building walls. The ends of sewers shall be tightly t lu or capped at the terminal points adjacent o uldin pending the connecting of 91 such lines to the building main as specified in "the plumping and architectural drawings One set of approved plans shall be on the job site at all times. 2. MATERIALS A. Polyvinyl Chloride Pipe (PVC) 1. 6' 15" PVC pipe shall be SDR 35 and conform to ASTM D3034, with a minimum cell dos ification of 12454 -B or 12454 -C. Greater than 15 PVC pipe shall conform to ASTM F679, with a minimum cell classification of 12454 -C. B. Ductile Iron Poe 1. Ductile iron (Di) ,pipe must meet ASTM A -746 or AWWA C151 with exterior asphaltic coating per AWWA C151 and interior asphaltic coating meeting AWWA C151 or polyethylene lining complying with ASTM D -1248 of nominal 40 mil thkkness. T1bickness design must be in accordance with C11 0. 2. Joint on DI pipe must be the inteqraj b.11 type gasketed po meeting AWWA C111 mechanical ,pin MJ) meeting AWWA C111, or ANSI 125 Ib. ,flanged joint. Accessories j mechanical and flanged joints must be alloy steel T -head bolt and hex nut f Coarce Thread Series Class 2A (External) and Class 2B (Internal) per ANSI B1.1. C. 1'l' 2. All fittings and joints shall be compression type flexible gasketed jo ints, and manufactured installed nstalled in accordance with the pipe manufacturers specifications. No solvent cement joints shall be allowed. Manholes 1. Precast reinforced concrete manhole sections and steps and concrete adjusting rings shall conform to ASTM C -478 latest revision. Exterior of manhole shall be waterproofed with Bismatic material. 2. Castings shall be of uniform ality, free from blow holes, porosity, fiord spots, shrinkage distortion or other defects. They shall be smooth and well leaned by shot blostin9 or by some other approved method. They shall be coated with asphalt oint which shall result in a smooth cootintcky tow and tenacious when cold, not or brittle. They shall be gray iron meeting ASTM A -48 latest revision. Manhole covers for sanitary sewer shall be Neenah Type R- 1077 -A w/R- 1712 -B -SP Frame w /Self- Sealing application. 3. Joints Manhole sections shall be joined with a nominal 1/2 size butt'4 rubber rubber base gasket material, conforming to AASHTO M -198 and Federal Specification SS- S -210a. Joint conforms to ASTM C -443. 4. Manholes shall include steps. Manhole steps shall be polypropylene coated steel reinforcing or an approved non corrosive fiberglass material. The copolymer pol lop 4ene shall meet the re yjrements of A fit D -4101 with deformed 3 did. or larger reinforcing steel conforming to ASTM A -615 Grade 60. Steps shall be a maximum of 18 from top, 24 from bottom and 16 spacing between. 5. Manholes shall be bedded on a granular foundation. The granular foundation shall be compacted with vibratory tamps. 3. APPUCA11ON A. Permits and Codes The intent of this section of the specifications is that the contractor's bid on the work covered herein shall be based upon the drawings and specifications but that the work shall comply with all applicable codes and regulations as amended by any waivers. Contractor shall famish all bonds necessary to get permits for cuts and connections to existing sewers. The Contractor shall be responsible for obtaining or verify verifyinq all permits for all or portions of this projec prior to starting construction. The Contractor shall notify the local or county inspector or utility superintendent 48 hours prior to commencement of sanitary construction. B. Local Standards The term "local standards' as used herein means the standards of design and construction of the respective municipal department or utility company. C. Existing Improvements Maintain in operating condition all active utilities, sewers and other drains encountered in the sewer installation. Repair to the satisfaction of the owner any damage to existing active improvements. D. Workmanship To conform to all local, state and national codes and to be approved by all local and state agencies having jurisdiction. E. Trenching Loy all pipe in open trenches, except when the local authority Ives written permission for tunneling or ing oT pipe. Open the trench sufficiently aheod pipe--laying to reveal any obstructions. The width of t he trench shall be the inside pipe diameter plus 24 inches for 12 inches above the pipe. Sheet and brace the trench as necessary to protect workmen and adjacent structures. All trenching to, comply with Occu tional Safety and Health Administration Standards. Opep trenches shall be properly protected and /or barricaded when left unattended. Keep trenches free from water while construction is in progress. Under no circumstances shall pipe or appurtenances be laid in standing water. Conduct the discharge from trench dewatering to drains or natural drainage channels. F. p ecial Supports Whenever, in the opinion of the P ecid ginee r, the soil at or below the pipe grade is unsuitable for supporting sewers and appurtenances specified in this section, such special su pport in addition to those shown or specified, shall be provided as the Engineer may direct, and the contract will be adjusted. G. Bockfilling for a depth of at least 12 inghes above the top of the pipe, backf ll with 12 of 18 crushed stone or fractured face aggregate. Com this backfill taking care not to disturb the pipe. For the remaining trench, nth, backfill with earth or granular material containing stones or rocks not larger than 4 inches. Backfitl under and within 5 of walks, parking areas, driveways and streets shall be granular material only thoroughly compacted, by approved methods. H. Flow Channels The flow channels within manholes shall be an intea,al part of the precast base. The channels shill be shaped and formed for a dean transition with proper hydraulics to allow the smooth conveyance of flow through the manhole. The bench wall mall be formed tg the crown of the Inlet and outlet pipes to form a U shaped channel. The bench wall shall slope back from the crown at 1/2 inch per foot to the manhole wall. No brick, rock or sand fillers will be allowed. I. Infiltration The contractor shall fumish necessary equipment to test sewers for infiltration. lntiltration rates shall not exceed the Local Standards. All sanitary sewer lines upon completion will be required to ass a low pressure air test, unless otherwise directed by the City Engineer. Said test shall be conducted according to NCPI Standard Method and shall be witnessed by an inspector authorized by the City Engineer. Infiltration under test shall not exceed 100 gallons per inch of inside diameter of sewer pipe per mile of sewer in 24 hours and is inclusive of all appurtenances within the section being tested such as manholes, house connections, etc. Any portions not passing said tests for acceptance shall be repaired or replaaced, including re- excavation and backfill, at the Contractors expense. J. Flushing Sewers Flush all sanitary sewers except building sewers with water to obtain free flow through each line. Remove all silt and trash from appurtenances just prior to acceptance of work. K. Plastic Sewer Pipe Installation Plastic sewer 92' ipe shall be installed in accordance with ASTM 321 per latest revision, and no plastic pipe shall exceed an 11 point mandrel test deflection of 5% All sewer mains shall be lapped at the time the mandrel test is conducted. All mains shall be true to alignment and grade. L Storm Wat Connections No roof drains, footing drains and /or surface water drains may be connected to the sanitary sewer sy including temporary connections during construction. M. Waterline Crossing Water and sewer line crossings and separations shall be in accordance with Ten States Standards and local and state codes. Waterlines and sanitary sewers shall maintain a minimum of 10 foot horizontal sep aration and a minimum 18 inches of clearance between pipes at crossings. Otherwise, sanitary sewer within 10 feet of waterlines shall be constructed of water works grade Ductile Iron Poe with mechanical joints and fittings. One length of sewer pipe should be centered at the waterline crossin so that no joint is loser than 10 feet to the waterline. N. Utilities It shall be the responsity of each contractor to veri all existing utiities and conditions pertainingg to his phase of the work. It shall also be the contractors responsibilit i to contact the owners of the various utilities before work is started. The contractor mall notify in writing the owners and the engineer of any changes, errors or omissions found on these plans or in the field before work is started or resumed. 0. Service Laterals Individual building service lines shall be 6 inches in diameter and of material equal to that specified in. 2A of this section. Service lines shall be connected to the main sewer by a we at locations generally shown within these plans. Service Imes shall be extended to a distance of q feet beyond the right- of-way line and within 5 -8 of the existing around surface. The ends shall be plugged and sealed with a water tight cap. Sewer service lines shall be marked with a 2"x4" painted green and extending from the lateral end to 3' above grade. P. New Sanitary Sewer Main Construction Contractor shall record length and dimensions of each service line stub from nearest downstream manhole measure along the sanitary sewer main. The locations of manholes and service lines along, with any other construction changes are to be Incorporated op the original construction drawings as as -built locations and submitted to the Engineer as soon after completion of construction as possible, not to exceed 30 days. Q. Field Testing All manholes must be vacuum tested after installation, repair or modification in accordance with ASTM 01244 -93, Standard Test Method for Concrete Sewer Manholes by Negative Air Pressure (Vacuum) Test. STORM SEWER SYSTEMS 1. SCOPE OF WORK The work under this section includes all storm sewers storm water inlets, and related items, including excavating and backfilling, necessary to complete the work shown on the drawings. All work and materials shall meet Hamilton County specifications. 2. MATERIALS A. Storm Sewers B. 1. Reinforced concrete sewer pipe shall conform to ASTM C -76 latest revision, with joints conforming to ASTM C -443 latest revision when storm pipe is continuously submerged in water. 2. Aluminized type 2 corrugated steel pi shall b e manufactured ill acc dance with AASHTO M36 type I with, 2 2/3 x 1/2 corrugation ,tor Z� „and 15 djorneters; type IR witi 3/4 x 3/4 x 7 1/2 corrugations for 18 diameter and larger). The pipe shall be formed from an aluminized steel type 2 coil that conforms to AASHTO M274. The minimum gage thickness of the pipe shall be as follows: Diameter Gage 42-48' 14 54 84 12 H�iggh density pdyeth shall pipe all rform 3. AASHTO M252 and M294 Type S specifications, latest revision, and shall have material ssD� 'fications conforming to ASTM 01248 or tf;3350, latest revision. Manholes 1. Precast reinforced concrete manhole sections and steps shall conform to ASTM C -478 latest revision. 2. Costing shall be of uniform quality, free from blow hales, porosity hard spots, shrinkage distortion or other defects. They shall be smooth and well deoned by shot blasting or by some other approved method. They shall be coated with asphalt point which shall result in a smooth coati tou and tenacious when cold, not faddy or brittle. They shall be gray iron meeting ASTM A -48 latest revision. 3. Joints Manhole sections shall be jointed with rubber type askets. The rubber type gaskets shall meet ASTM C -443 latest revision. When manhole and storm pipe are continuously in water. C. SUBDRAINS 1. Perforated plastic DiDe subd9 s shall conform to ASTM F -405, AASHTU 11 -252 (4 to 10 pipe). 3. APPLICATION A. Permits and Codes The intent of this section of the specifcotior^s is that the contractor's bid on the work covered herein shall be based upon the drawings and specifications but that the work shall comply with all spplicable codes and regulations as amended by any waivers. Contractor shall furnish all bonds necessary to get permits for cuts and connections to existing sewer. Contractor shall notify the County Surveyors Office a minimum of 72 hours prior to the commencement of storm sewer construction. 8. Local Standards the term "Local Standards' as used herein means the standards of design and construction of the respective municipal department or utility company. C. Existing Improvements Maintain in operating condition all active utilities, sewers and other drains encountered in the sewer installation. Repair to the satisfaction of the owner any damage to existing active improvements. D. Workmanship To conform to all local, state and national codes and to be approved by aH local and state agencies having jurisd Lion. E. Trenching Lay all pipe in open trenches, except when the local authority gives written permission for tunneling. Open the trench sufficient ahead of pipe laying to reveal any obstructions. The width of the trench shall be the inside pipe diameter plus 24 inches for 12 inches above the pipe. Sheet and brace trench as necessary to ect workme n and de jacent structures. All r to com with Occu Tonal Safety and Health Aministration Standard Keep trenches free from water while construction is in progress. Under no circumstances lay pipe or appurtenances in standing water. Conduct the discharge from trench dewatering to drains or natural drainage channels. F. S pports Whenever in the opinion of the r e soil at or below the pipe e grade is unsuitable for supporting sewers and appurtenances specified in this section, such special support, in addition to those shown or specified, •shall be provided as the Engineer may dsrect, and the contract will be ad� G. Backfilling for a depth of at least 12 inches above the top of the pipe, backfiiiI with earth or V nular material free from large stones, rock roots or sod. Tamp this badcfll thoroughly, taking care not to disturb the pipe. For the remaining, trench depth, backfill with earth or granular material containing stones or rocks n9t larger than 4 inches. Backfll under and within 5 MI paved areas shall be granular material only and conform to local standards thoroug hly compacted by approved methods. H. Manhole Inverts Construct manhole flow channels of concrete sewer pipe or brick, smoothly finished and of semicircular section conforming to the inside diameter of the connectingg sewers. Make changes in size or grade rode y and changes in direction by true curves. Provide such channels for all connecting sewers at each manhole. Subdrains All subdrains shall be of the size shown on the plans and shall be constructed to the grades shown. All drains constructed off -site as part of the outlet drain will be located as shown. J. Utilities It shall be the responsibility of each contractor to verify 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. No. STREETS AND PAVING 1. SCOPE OF WORK A. The work required under this section includes all concrete and bituminous paving and related items necessary to complete the wdrlc indicated on drawings and described in the specifications, including but not limited to: All streets, parking areas in contract limits Curbs and gutters. Sidewalks and concrete slabs, exterior steps. 2. MATERIALS A. Concrete Concrete shall be ready -mixed concrete and shall be a mix of proportioned fine and coarse aggregates with Portland cement and water. Minimum cement content shall be 6 bogs per cubic yard of concrete and maximum water content shall be 5.5 U.S. gallons per sack of cement, including moisture in the aggregate. Slump for normal weight concrete shall be a maximum of 4 inches aid a minimum of 2 inches. The slump oJ machine place concrete shall be no less than 1-1/4 inches nor more than 3 inches. Standard test ASTM C -143 shall be used to measure slump. Compressive strength of concrete at 28 days shall be 4000 psi. All exterior concrete shall have air entrainment of 5% to 8% by volume per ASTM C -260. Retempering delivered concrete will not be allowed. Concrete shall be composed of 1. l P ortl and or T Conforming to ASTM C -150, Type ype 2. Aggregates: Conforming to ASTM C -33 3. Water Shall be dear and free from injurious amounts of ols, acids, alkalis, or g anic materials or other deleterious substances. 8. Welded Steel Wire Fabric Where required for concrete reinforcement shall conform to ASTM A185. C. Premoulded Joint Filler Shall be of non extruding t Ant e meeting ASTM D -544 except that premoulded flier used In concrete walk construction may be either non extruding or resilient. D. Bituminous Pavement Materials All materials proposed for the construction of bituminous pavements shall comply with the Indiana Department of Transportation specifications, per latest revision. E. Compacted Aggregate Subbase: Shall be crushed stone or grovel. Crushed gravel shall be a minimum of 35% crushed material. Chert shall be limited to a maximum of 8% of the total. Material shall be free from an excess of flat, elongated, thinly laminated, soft or disinte pieces and shall be free from fragments coated with dirt. Compacted aggregate shall be graded as follows: Date SIEVE SIZE 11/2' 1�2' 200 PASSING 80-100 70-90 A60 25 -50 12 -30 5 -10 3. APPLICATION A. Grading Do any necessary grading in addition to that, performed m accordance with Earthwork Section, to bring subgrades, after final compaction, to the required grades and sections for site improvement B. Preparation of Subgrade Remove spongy and otherwise unsuitable material and replace with stable material. No traffic will, be allowed on prepared subgrade prior to paving. C. Compaction of Subgrade The first 6 inches below the subgrade shall be compacted to at least 100% of the maximum dry density as determined by the provisions of AASHTO T -99. Water shall be prevented from standing on the compacted subgrade. D. Compacted Aggregate Subbase the thickness shown on the drawings is the minimum thickness of the fully compacted subbase. Compaction shall be accomplished by rolling with a smooth wheeled roller weighing to 10 tops. Compact to 95% standard proctor density (ASTM D 1557) Along curbs, headers and walls and at all placed not accessible to the roller, the odgg gregate material shall be tamped with mechanical tampers or with approved hand tampers. E. Bituminous Pavement Hot asphalt concrete pavement shall be as specified in Section 400 -410 of the Indiana Department of Transportation Specifications latest revisions. Pavin will not be permitted during unfavorable weather or when the temperature is not in compliance with section 401.05 of the INDOT Specifications. F. Utility Structures Check for correct elevation of all manhole covers, valve boxes and similar structures located within areas to be paved, and make, or have made, any ne cessar y adjustments in such structures. G. Placing Concrete 1. Subgrade Place concrete only on a moist, compacted subgrade or base free from loose material. Place no concrete on a muddy or frozen subgrade. 2. Forms All forms shall be free from warp, tight enough to prevent leakage and substantial enough to maintain their shape and ,position without slinging or settling, when concrete is placed Forms shall be clean and smooth and coated with form release before placement of concrete. 3. Placing Concrete Concrete shall be deposited so as to require as little rebanding as practicable. When concrete is to be placed at an atmospheric temperature of 35 deqrees F. or less, paragraph 702.10 of the Indiana Deportment of Transportation Specifications latest revision shall be followed. Revision DeenBy NfH UTILITIES 2. GAS H. Concrete Curb 1. Expansion Joint premoulded at ends maximum spacing of Contraction Jot provided, contraction joints spaced 20 fee 3. Finish Tamp N aced, and fill any nish square comer other corners to rid i. Concrete Walks and E 1. Slopes Provic slope. Make ad juste intersections as neci drainage. 2. Dimensions V course construction shown on the drawn Finish Screed steel trowel to a hat surface water has di broom finish and so w here sidewalks 'iinnt spacing of 48 feet t J. Curing Concrete E, cure all concrete by in Section 501.17 oT Transportation Specil 1. WATER 3. OTHER UTILITIES Cry Township, Drawn By MFH SPECFICATIONB Ham on Che A8 /2 inch thick and at a foot cross at walk e proper shall be one and details and tested in accordance ts. formation only. The local gas installation of new gas mains. red Bjr Approved By AES i S No. 1 r 880 •o STATE OF jS /o N AL'�� Liiitii fa 1 co n ENGINEERING, INC. 13110 Promise Road, Noblesville, IN 46060 Phone: (317) 841 -3141 Fax: (317) 841 -9951 '/t d Da}. March 29, 2004 Job No. 100.0 Scsile AS SHOWN Sheet No. 8 EJF 10 Shall be 1 >f all returns 100 feet. Ls Unless otherwise joints shall be sawed on center. ind screed concrete as soon as oney nbed places. to 1 /4 radius and shown. .terror Steps 1/4 inch per amts in slopes rsary to proved ilks and steps nd of widths s A. All water mains shall be installed with local standards nd requiremen Gas mains shown in the ins are for in utility is responsible for fa l design and concrete and trowel with a I dense surface after appeared. Apply medium )e qoptrot pmts at 5 1/2 expansion joints ec and at a maximum tween expansion pints. :ept as otherwise specified, me of the methods described be Indiana Department of rations, latest revision. Electric Telephone, and C TV lines shown in the plans are for information only. the local utility car zanies are respoxnsi'ble for final design and installation of their respective utility I yes. TOM WOOD BAUER I RVE LOT