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HomeMy WebLinkAbout7S SECTION 2A I. SCOPE OF WORK: EARTHWORK A. Extent: The work required under this section consists of all excavating, filling, rough grading and related items nocessary to complete the work indicated on the drawings and described in the specifications. I. in general the items of work to be performed under 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 negassary 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 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; I. Excavation, grading and backfilling for utility lines. 2. Storm and sanitary sewer systems 2. BENCH MARKS: Maintain carefully all bench marks, monuments and other reference points; if disturbed or destroyed, replace as directed. 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 be 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 inter- fering branches without injury to trunks and cover scars with tree paint. 5. STRIPPING OF TOPSOIL: A. Remove top soil to a depth of 6 inches from the areas to be occupied by roads, walks and parking areas. Pile and store top soil at a location where it will not interfere with construction operations. Topsoil shall be reasonably free from subsoil, debris and stones. 6. DISPOSITION OF UTILITIES: A. Rules and regulations governing the respective utilities shall be observed in executing all work under this section. B. Where active utilities are encountered but not shown on the drawi Ns, 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 Engineer.. 7. SITE GRADING: A. Grades: Do all cutting, filling, compacting of fills and rough grading required to bring entire project area to subgrade as shown on the drawings. B. Rough Grading: The tolerance for paved areas shall not exceed 0.10 feet above established subgrade. All other areas shall not exceed 0.10 feet plus or minus the established grade. Provide roundings at top and bottom of banks and other breaks in grade. SECTION 2B STORM AND SANITARY SEWER SYSTEMS 1. SCOPE OF WORK: The work -under this Section includes all sanitary sewers, storm sewers, manholes. catch basins, cleanouts, storm water inlets, and related items, including excavating and backfilling, necassary to complete the work shown on the drawings, starting two feet outside the building walls. The ends of sewers shall be tightly plugged or capped at the terminal points, adjacent to buildings, pending the connecting of all such lines to the building drain as specified in the plumbing section. 2. MATERIALS: A. Sanitary Sewers: 1. All gravity plastic sewer pipe and fittings shall conform to ASTM D3034, SDR -35. 2. Extra strength vitrified clay sewer pipe conforming to ASTM C-700 latest revision, i with compression joints conforming to ASTM C-425 latest revision. 3. ARS Sewer Pipe and fittings shall conform to ASTM D2680 latest revisie B. Storm Sewers I. Reinforced concrete sewer pipe conforming to ASTM C-76 latest revision with joints conforming to ASTM C-443 latest revision. 2. Corrugated metal pipes shall be standard Helical pipe made from zinc coated iron or steel sheets which shall conform to ASTM A-444 latest revision. Couplers shall be made of the same zinc coated base metal as the pipe. When specified, the pipe shall be uniformly bituminous coated inside and out to a minimum thickness of .05 inches. C. Manholes: I. Precast reinforced concrete manhole sections and steps shall conform to ASTM C-478 latest revision. 2. Castings shall be of uniform quality, free from blow holes, porosity, hard spots, shrinkage distortion or other defects. They shall be smooth and well -cleaned by shotblasting or by some other approved method. They shall be coated with asphalt paint which shall result in a smooth coating, tough and tenacious when cold, not tacky or brittle. They ishall be gray iron meeting ASTM A-48 latest revision. 3., Joints - Manhole sections shall be jointed with either mastic in bulk; stick or rubber type gaskets. The rubber type gaskets shall meet ASTM C-443 latest 3. APPLICATION: 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 regul- ations as amended by any waivers. Contractor shall furnish all bonds necessary to get permits for cuts and connections to existing sewer. 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: Lay all pipe in open trenches, except when the local authority gives written permission for tunneling. Open the trench sufficiently 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 protect workmen and adjacent structures. All trenching to comply with the Occupational Safety and Health Administration Standards. 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 Special Supports: Whenever, in the opinion of the Engineer, the soil at or below the pipe grade is unsuitable for supporting sewers and appurtenances specified 1kin this section, such special support, in addition to those shown or specified, shall be provided as the Engineer may direct, and the contract will be adjusted. G. Backfilling: For a depth of at least 12 inches above the top of the pipe, backfill with earth or granular material free from large stones, rock fragments, roots or sod. Tamp this backfill thoroughly, taking care not to distrub the pipe. For the remaing trench depth, backfill with earth or granular material containing stones or rocks not larger than 4 inches. Backfill under walks, parking areas, driveways and streets shall be granular material only -thoroughly compacted. H. Manhole Inverts: Construct manhole flow channels of concrete, sewer pipe or brick, smoothly finished and of semi -circular section conforming to the inside diameter of the connecting sewers. Make changes in size or grade gradually and changes in direction by true curves. Provide such channels for all connecting sewers at each manhole. I. Infiltration: Furnish necessary equipment to test sewers for infiltration. Infil- tration rates shall not exceed the Local Standards. 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 shall be installed in accordance with A.S.T.M. D2321 per latest revision, and no plastic pipe shall exceed a deflection of 5%. SECTION 2C I. SCOPE OF WORK: WATER MAINS A. The work required under this section includes all cold water distribution lines, valves, meter pits, hydrants, and related items including oxcavating and backfilling necessary to complete the wo,� shown on the drawings. The ends of water service lines shall be tightly plugged or capped at the terminal points pending the connect- ing to all such lines of the building piping as specified in the plumbing section. 2. MATERIALS: A. Cast Iron Pipe: Cast iron pipe shall meet AWWA Specification C-106 with push -on joints meeting AWWA Specification C-111. Wall thickness shall be determined from Table 6.4 in AWWA C-106. Ductile iron pipe shall meet A'SWA C-150 and C-151 Specifications. Pipe to be cement line per AWWA C-104. B. Copper Tubing: Shall be seamless, annealed copper tubing complying with Federal, Specification WW --T-799. Fittings shall be wrought copper or cast bronze with solder joints. Solder shall be of a composition recommended by the manufacturer of the fittings. C. Fire Hydrants: Shall comply with AWWA Specification C-502, and shall meet local standards and requirements, particularly as to nozzle'diameters and threads, direct- ion of opening and dimensions of operating and cap nuts. Fire Hydrants shall have one pumper and two hose nozzles. A valve opening not less than 5 inches and a 6 inch inlet connection. The length of the hydrant barrell shall be determined by the specified depth of cover over the pipe. D, Valves: All valves and stops shall have ends suited or adaptors shall be provided, for the proper installation in the lines in which they are located. Valves shall meet local standards or, in the absence of such standards, the following requirements I. Valves in cast iron pipe shall be iron body, bronze mounted, disc gate valves conforming to AWWA Specification C-500. They shall open in the same direction as these used in the local waterworks system. Valve stems shall terminate in 2 inch wrench nuts. Furnish two (2) keys. E. 2. Valves in copper pipe shall be standard brass body, round -way, ground -key stops, with T heads. Furnish two (2) keys. Valve Boxes: Shall meet local standards or, in the absence of such, shall comply with the following requirements: lk I. For iron body valves. boxes shall be approved standard buffalo -type, cast iron, adjustable shaft boxes, having a minimum shaft diameter of 5-1/4 inches. 2. For brass body valves (stops) boxes shall be approved standard cast iron exten- sion service boxes, having -a, minimum diameter of 2-1/2 inches and having lid held in place by a brass or bronze bolt. The castings shall be coated with two soats,•+f coal -tar pitch varnish. Furnish two (2) keys for bolt in lids. F. Plastic Pipe: Shall conform to ASTM D -2241 -SDR 26 with solvent weld joints conforming to ASTM D-2855. 3. APPLICATION: 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 regul- ations. Contractor shall furnish all necessary bonds to get permits for cuts and connections. B. Existing Improvements: Maintain in operating condition all active utilities ana sewers and other pipe system that may be encountered. C. Trenching: Lay all pipe in open trenches, except when local authority gives writter; permission for tunneling. Provide a separate trench for the water line at least 10 feet horizontally from any sanitary sewer. In locations where seperate trenc"s for sewer and water lines are impracticable, lay the water pipe on a solid shelf at least 18 inches above the top of the sewer. D. Width of Trench: Excavate trenches 12 inches each side of the pipe for prop,?� installation of pipe. E. Sheeting and bracing: Sheet and brace trenches as necessary,to protect workriclr and adjacent structures. Al trenching shall comply with the Occupational Svty and Health Administration Standards. F. Water Removal: Keep trenches free from water while construction therein is progress. Under no circumstances lay pipe or appurtenances in standing wate- Conduct the discharge from trench dewatering to drains or natural drainage channels. G. Grading Trench Bottoms: The bottom quadrant of the pipe shall be fully and uniformly supported. The full load shall rest on the barrel of the pipe. The trench may be excavated to a depth of 4 inches or more below final grade with sand., crushed stone or gravel backfill to bring it back to pipe laying grade. For a depth of at least 12 inches above the top of the pipe, backfill with earth or granular material free from large stones, roots or frozen clods. Tamp this backfill thoroughly taking care not to disturb the pipe. Backfill under walks, parking areas, driveways and streets with granular material only and tamp thoroughly. H. Tests: Before joints are covered, fill the piping with water, opening hydrant., or other outlets to expel] air. Test the piping for Leakage for a period of at. least two hours at a pressure of100 pounds per square inch. Inspect all joints for leakage and remedy any leaks. Upon completion of the water distributiLo mains, flush out the system until the water runs clear. As soon as the system has been flushed out, it shall be sterilized in accordance with the requirements of the health department having jurisdiction. 1. Shop Drawings: Submit Shop Drawings of hydrants and valves to City Engineer f:r approval. j. If a horizontal distance of 10 feet cannot be maintained between the water l and sanitary sewer line, one of the following shall be done. z. Water line laid in a separate trench and 18" above sewer. b. Water line laid in same trench on a bench of undisturbed earth and sewer least 18" below bottom of water line. Where water lines and sewers cross and the water line cannot be placed above le sewer with a minimum of 18 inches vertical clearance, the sewer must be const cted of water works grade cast iron pipe with mechanical joints within ten feet of the water line. SECTION 2D STREETS AND WALKS 1. SCOPE OF WORK: The work required under this section includes all concrete and bituminous paving ►td related items necessary to complete the work indicated on drawings and described G specifications, including but not limited to: All streets and parking areas in contract limits. Curbs and Gutters Walks 'Exterior Steps 2. MATERIALS: A. Concrete: Shall be ready -mixed concrete and shall be a mix of proportioned fi'�, and coarse aggregates with Portland cement and water. Minimum cement content shall be 6 bags per cubic yard of concrete and maximum water content shall be 5 U.S. gallons per sack of cement, including moisture in the aggregate. Slump fo normal weight concrete shall be a maximum of 4 inches and a minimum nf 2 inches The slump of machine placed concrete steal► he no less 'Fan 1 1;4 inches nor ^ora than 3 inches. Stan;iard test. AST'! C-143 shall be useJ to mas!:re s 1 ump. Com- pressive strenctth of concrete at 28 days shall be 4000 psi. All exterior concr +e shall have air entrainment of 5i to 8% by volume per ASTH C-260. Retempering o delivered concrete will not be allowed. Concrete shall be composed of. I. Portland Cement: Conforming to ASTM C-150, type IA or Type IIIa. 2. Aggregates: Conforming to ASTM C-33. 3. Water: Shall be clear and free from injurious amounts of oils, acids, alkalies, organic materials or other deleterious substances. B. Welded Steel Wire Fabric: Where required for concrete reinforcement shall cc )rm to ASTM A185. C. Premoulded Joint Filler: Shall be of non -extruding type meeting ASTM D-544, except that premoulded joint 'filler used in concrete walk construction may be either non -extruding or rebi l ient, D. Bituminous Pavement Materials: All materials proposed for the construction o` bituminous pavements shall comply with the Indiana State Highway Specificatio-; per latest revisions. E. Compacted Aggregate Subbase: Shall be crushed stone or gravel. Crushed gray, shall be a minimum of 35% crushed material. Chert shall be limited to a maxi, i of 8% of the total. Material shall be free from an excess of flat, elongated, thinly laminated, soft or disintegrated pieces; and shall be free from fragme- coated with dirt. Compacted aggregate shall be graded as follows: SIEVE SIZE PASSING (Square openings by weight) 12" 100 1" 80-100 1", 70-90 255-80 �4 35-60 tt8 25-50 X30 12-30 f200 5-10 3. APPLICATION: A. Grading: Do any necessary grading in addition to that performed in accordance th Section 2A - Earthwork, to bring subgrades, after final compaction, to the req 11 ed grades and sections for site improvement. 3. Preparation of Subgrade: Remove spongy and otherwise unsuitable material and replace with stable material. C. Compaction of Subgrade: The first 6 inches below the subgr1ade shall be compact to at least 9510 of the maximum dry density as determined by the provisions of AAS° T-99. Water shall be prevented from standing on the compacted subgrade. i I D. 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 necessary adjustments in such structures. E. Placing Concrete: I. 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 springing or settling, when concrete is placed. Forms shall be clean and smooth immediately before concreting. 3. Placing Concrete: Concrete shall be deposited so as to require as little rehandling as practicable. When concrete is to be placed at an atmospheric temperature of 350 F or less, paragraph 702.10 of the Indiana State Highway Specifications. latest revision shall be followed. N Z C F. Concrete Walks and Exterior Steps: N N O 00 O 00x o01D Z Q O i. Slopes: Provide 1/4 inch per foot cross slope. Make adjustments in slopes at o: a O O walk intersections as necessary to provide proper drainage. 0- a. CC o O 2. Dimensions: Walks and steps shall be one course construction and of widths and U O Z Z Cr details shown on the drawings. O Z Z �a N - C2 Q 3. Finish: Screed concrete and trowel with a steel trowel to a hard dense surface W F- W W after surface water has disappeared. Apply medium broom finish and scribe LL w Cr U o� control joints at 5 foot spacing. Provide 2" expansion joints where sidewalks (� z o Z a intersect, and at a maximum spacing of 48 feet between expansion joints. 2 LU � Q F - � o c 0 z O G. Concrete Curb and Gutter: W N � �- Z � °, 1. Expansion Joints: Shall be I inch thick premoulded at ends of all returns and m 0 at a maximum spacing of 100 feet. c 0 �N Z > c U 2 2. Contraction Joints: Unless otherwise provided. contraction joints shall be Y sawedjoints spaced 20 feet on center. w 3. Finish: Tamp and screed concrete as soon as placed, and fill any honey combed Z Z, U w I places. Finish square corners to 1/4" radius and other corners to radii shown. c 0 H. Curing Concrete: Except as otherwise specified, cure all concrete by one of the r methods described in Section 501.17 of the Indiana State Highway Specifications, m latest revisions. I. Bituminous Pavement: Hot asphalt concrete pavement shall be as specified in Section 403 of the Indiana State Highway Specifications, latest revision. Paving will not be permitted during unfavorable weather or when the temperature is 400 F and falling. C J. Compacted Aggregate Subbase: The thickness shown on the drawings is the minimum thickness of the fully compacted subbase. Compaction shall accomplished by rolling with a smooth wheeled roller weighing 8 to 10 tons. Compact to 9010 compaction using Standard Testing Procedures. Along curbs, headers and walls and at all places L not accessible to the roller, the aggregate material shall be tamped with mechanical tampers or with approved hand tampers. " SUITE INN N co CO Z N N O 00 O 00x o01D Z Q O _m o: a O O a 0- a. CC o O Q U O Z Z Cr z O Z Z �a N - C2 Q W W F- W W . LL Z Cr U o� W (� z o Z a W 2 W J ~ � Q F - � o W z O W N � �- Z � °, 0 c �N > c U 2 r M w J O Q H o01D Z O O a O 0- O U Z Z z z Z _ Q W W F- Cn C/) LL �-- U Q o F- W oW �W LL V CC a aCL tea- W J ~ a F - SHEET 7 OF 7