SECTION 4.00 : SCOPE OF WORK Subsection 4.01 : Intent of the Contract The intent of the Contract is to prescribe the complete work or improvement. The Contractor shall perform all the items of work stipulated in the Proposal in accordance with the lines, grades, typical cross sections and dimensions shown on the plans or sup plemental plans, standards, or modifications of them as required by change conditions in the field, and as authorized or directed. The Contractor shall do all clearing and grubbing; make all excavations and embankments; do all shaping and surfacing; constr uct all drainage structures, bridges and other appurtenant structures, as indicated in the Contract; remove all obstructions from within the lines of the improvement; and shall do such additional, extra and incidental work as may be considered necessary to complete the work in a substantial and acceptable manner; and when it is so completed they shall leave the work in a neat and finished condition. The Contractor shall do all the work and furnish all the materials, tools and appliances, except as otherwise specified, necessary or proper for performing and completing the work required by the Contract, in the manner and within the time specified. The Contractor shall complete the entire work to the satisfaction of the Engineer, and in accordance with the specifications and drawings for the work at the prices agreed upon. All the work, labor and materials to be done and furnished under the Contract shall be done and furnished pursuant to, and in conformity with the specifications and the drawings for the work, which said specifications and drawings shall form part of the Co ntract. Further the Contractor shall follow the directions of the Engineer as given from time to time during the progress of the work under the terms of the Contract. The Contract shall include grading outside the right -of-way together with the work of loaming surfaces, constructing walks, driveways, drains, and other miscellaneous work as shown on the plans and as directed. The Contract shall include technical submittals, schedule submittals, materials COCs, payroll records and any and all other documents required by the plans and specifications to support the physical work of the contract. The Contract shall, at the discretion of the Party of the First Part, be extended when the safety and convenience of the public necessitates the construction of access roads or approaches to existing roadways or bridges and the nature of such additional wo rk bears a reasonable subsidiary relation to the original Contract. Subsection 4.02 : Alterations Should it be found desirable by the Engineer to make alterations in the form, character, or detail of any of the work done or to be done, the Engineer may order such alterations to be made, defining them in writing, supplemented by drawings when in the jud gment of the Engineer it is necessary, and the alterations shall be made accordingly. The Contractor shall accept as full compensation for work performed under an alteration order the contract unit prices stipulated in the Contract for the actual quantity of work performed in an acceptable manner. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.75 202 4 Edition SECTION 300 : WATER SYSTEMS SUBSECTION 301: WATER SYSTEMS DESCRIPTION
301.20 : General
Work under this section shall consist of making alterations in existing municipal water main systems or constructing new sections of existing systems affected by highway and bridge construction. The work includes furnishing and installing new water pipe an d appurtenances and removing and resetting existing materials in the same or new locations in accordance with these specifications and in close conformity with the lines and grades shown on the plans or established by the Engineer.
301.21 : Workmen
All personnel employed by the Contractor on this work shall be experienced and skilled in water main installation.
301.22 : Protection of Underground Structures.
All conduits, pipes or structures uncovered during excavation, whether or not they are shown on the plans, shall be protected, and if damaged by the Contractor shall be repaired by them or the utility company at the expense of the Contractor. The Contractor shall not abandon existing conduits, pipes or structures without the prior approval of the Engineer.
301.23 : Notices
Prior written notice of at least 48 hours shall be given by the Contractor to affected Municipal Water and Fire Departments, with a copy of such notice submitted to the Engineer, before any water main is shut off and in no case shall a gate or hydrant be o pened or shut without proper authorization. MATERIALS
301.40 : General
Materials shall meet the requirements specified in the following Subsections of Division III, Materials: Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.76 202 4 Edition Thrust Blocks Cement Concrete .......................................................................................................................... M4.02.0 Jointing Materials for Pipes ..................................................................................................... M5.01.0 Water Pipe and Fittings Copper Tubing ....................................................................................................................... M5.06.0 Ductile Iron Pipe and Fittings ......................................................................................... M5.05.3 Insulation and Waterproof Jackets ....................................................................................... M9.11.0 Cellular Glass ................................................................................................................................. M9.11.1 Fiber Glass ...................................................................................................................................... M9.11.2 Expanded Polystyrene ............................................................................................................... M9.11.3 Urethane .......................................................................................................................................... M9.11.4 Waterproof Jackets ..................................................................................................................... M9.11.5 CONSTRUCTION METHODS 301.60: General The installation or removal and reinstallation of water systems or parts thereof shall conform to the following construction procedures:
A.Pipe Fittings, etc. All pipe fittings, valves, hydrants and other heavy accessories shall be carefully handled by the use of hoists or skidways to avoid shock or damage. Pipe handled on skidways shall not be skidded or rolled against pipe already on the ground. The Contractor shall replace or repair, at bis own expense, any materials that have been damaged due to their negligence. Where pipes are required in less than standard lengths, the cutting shall be done in a neat and workmanlike manner without damage to the pipe.
B.Excavation. See 140.60: General.
C.Bedding Pipe. See 230.61: Bedding Pipes .
D.Bridging. Where required, the Contractor shall provide suitable bridges for traffic to cross open trenches at streets and driveways.
E.Cleaning and Plugging Pipe. The pipes and fittings shall be thoroughly cleaned before being laid and shall be kept clean until accepted in the finished work. The ends of all uncompleted lines shall be tightly closed with temporary plugs at all times when the pipe laying is not in progress, and no trench water or debris shall be pe rmitted to enter the pipe. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.77 202 4 Edition F. Removal of Castings. In the work of removing hydrants and other castings to be reset, or stacked for the municipality, the castings shall be exposed, care being taken that they are not damaged by excavating or other machinery, the joints shall then be opened and the castings carefully removed. Any materials damaged during this work due to the Contractor's negligence shall be replaced by the Contractor at their own expense.
G.Laying Pipe. Proper tools and equipment for the safe and convenient handling and laying of the pipes shall be used. The Contractor shall exercise reasonable caution during their operations in order to avoid damaging the pipes, castings, or fittings and any which are damaged shall be replaced by them at their own expense. The Contractor shall furnish the necessary pumps and tools to handle any water encountered in the pipe trench, and shall maintain the trench in a satisfactory condition, free from water, during the laying of the pipe. The pipe, after being laid in place, shall not under any circumstances be used as a drain pipe for the trench. Cast iron pipe sections shall be laid with the bell on the upgrade end. Before laying the pipe, the outside of the spigot and the inside of the bell shall be wire brushed and wiped clean and dry. When placing a length of pipe, the yarning material for the joint shall be held around the bottom of spigot so that it will enter the bell as the pipe is shoved into position.
H.Setting Gates and Hydrants. Gates and gate boxes shall be set in the pipe lines as directed. Care shall be taken to see that the spigot ends are securely seated in the bell ends. Blocking or supports of a permanent nature shall be placed under each valve to insure against settlement. The blocking or permanent supports shall conform to Owner's Specifications. Each gate shall be tightly closed before being placed in the line and shall remain so until the joints on each side are completely made. Gate boxes shall be set for all gates. They shall be carefully fitted together and to the gate and securely held during backfilling. The earth around them shall be thoroughly tamped in place and the cover set to the finished grade. New gate and service boxes, and existing gate and service boxes that are designated to be removed and reset or adjusted to line or grade, which are located in roadway pavement areas shall have concrete collars constructed around them. The concrete collars shall conform to the details of design shown in the Department's Standards for Concrete Collars. Hydrants shall be properly supported and held plumb while the joints are being made and during backfilling. One (1) ft³ of crushed stone or screened gravel stone shall be placed as directed to drain each hydrant drip. The hydrants shall be satisfactorily braced near the bottom of the stem.
I.Thrust Blocks and Pipe Anchors. Reaction or thrust blocks of concrete shall be constructed at all tees, plugs, and bends as directed or as detailed on the drawings with 3,000 psi, 1 .5-inch, 470 Cement Concrete. The blocks shall be poured against undisturbed original ground and shall be so placed that pipe joints will be accessible Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.78 202 4 Edition for any possible future repairs. Yokes and tie -rods shall be installed in addition to or in lieu of thrust blocks. Pipe anchors shall be used when and as directed.
J.Testing. After completion, the trenches shall be partially backfilled leaving the joints exposed for examination, and the pipe line then subjected to a hydrostatic pressure of 50 % above the normal operating pressure. The pipe shall be tested between points as designated by the Engineer by slowly filling the test section with water by means of a pump connected to the pipe but not before the pipe has been relieved of air through taps made where required. Any defects in the pipe or joints revealed by this pressure test shall be repaired or replaced and the pipe line again subjected to a hydrostatic pressure test as described above for possible leakage over the allowable limits. Pump, connections, gauges and a measuring device shall be furnished by the Contractor. The pressure test shall be maintained for at least 2 hours during which time all exposed joints, fittings, valves and hydrants will be carefully examined. No pipe installation will be accepted until the leakage during a 2 -hr test period measured by pumping at the specified test pressure from a calibrated container into the section of pipe being tested is less than that determined by the formula: L =ND√P /1850 Where: Any defective joints, and any defects in new pipe fittings, valves or hydrants revealed during the leakage test or before final acceptance of the project shall be removed and replaced with other new material and again tested until the work is satisfactory, with no additional compensation.
K.Disinfection. After the testing has been successfully completed, the water mains shall be disinfected in accordance with the AWWA Standard Procedure C601.
L.Adjusting Boxes. Gate boxes and service boxes shall be adjusted to required grades and shall be securely held during backfilling (see paragraph H).
M.Backfilling. See 150.64: Backfilling for Structures and Pipes .
N.Installing Insulation and Jacket. 1.General. Where water pipe is installed or hung on structures, the insulating material shall be fiber glass, cellular glass, expanded polystyrene, or urethane. Section lengths and thickness shall depend on the L = Allowable Leakage in gallons per hour N = Number of joints D = Nominal pipe diameter in inches P = Average test pressure in pounds per square inch Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.79 202 4 Edition pipe size and the recommendations of the insulation manufacturers. When urethane insulating material is used the total thickness shall be not less than 2 in. ; when any other type of insulating material is used the total thickness shall be not less than 3 in.
2.Construction Requirements
a.Cellular glass pipe insulation for use on water pipes shall be applied as follows: Insulation shall cover all fittings, flanges and pipe clamps. The pipe shall be covered with the required thickness of cellular glass insulation of the premolded rigid type. It shall be molded and cut to conform to the size and shape of the pipe. All joints shall be tightly butted and sealed with adhesive as recommended by the manufacturer. The cellular glass insulation shall be applied to clean dry pipe surfaces and secured with ¾-in. x 0.015 in. stainless steel strapping spaced 9 in. on center. After insulation is in place, a tack coat of fibrated adhesive mastic shall be applied at the rate of 2 gal per 100 ft ². Into this, a layer of asphalt coated 20 x 20 mesh glass fabric overlapping all edges at least 3 in . shall be embedded. A second layer of the same fabric shall then be applied together with additional adhesive mastic to completely embed the layer of fabric. Finally, apply another coating of mastic at the rate of 4 gal per 100 ft². A weatherproof seal shall be provided at the ends of the insulation. Insulation covering flanges, fittings, and pipe clamps shall be cut to make a tight fit with the pipe insulation overlapping 3 in. on each end.
b.Fiber glass insulation for use on water pipes shall be premolded with an integral vapor barrier jacket and applied as follows: The fiber glass insulation shall be applied to the clean, dry pipe surface. Adjoining sections shall be butted firmly together an d taped. The tape shall be composed of a 3-ply system consisting of 1 layer of creped kraft paper, 1 layer of aluminum foil and 1 layer of asphalt impregnated creped kraft paper. The 3 layers shall be tightly bonded together with an asphalt adhesive. The tape shall be applied so that it overlaps the bun joint a minimum of 2 in . on each side. The longitudinal seam of the vapor barrier shall be sealed with a suitable adhesive. All flanges, fittings and pipe clamps shall be insulated with cement applied to the same total thickness as the pipe insulation and covered with 1- in. galvanized wire netting stretched tightly over the surface and wired in place with 16 gage galvanized wire. A weather - proof jacket of 0.020- in.-thick corrugated aluminum shall be placed over the insulation, all edges to lap a minimum of 2 in. Longitudinal joints shall be placed in the most suitable direction for shedding water. An adhesive mastic cement shall be applied to all joints and seams, making them completely water tight. The aluminum jacket shall be secured with 0.75 -in. x 0.015- in. stainless steel strapping and stainless- steel clips spaced 12 in . on center.
c.Expanded polystyrene or urethane insulation for use on water pipes shall be premolded and applied as follows: The polystyrene or urethane insulation shall be applied to clean dry pipe surfaces. All joints shall be tightly butted and sealed with a suitable polystyrene or urethane adhesive. The insulation shall be secured with ¾- in. x 0.015 -in. stainless steel strapping and corrugated aluminum with integral vapor barrier shall be applied over the insulation, all edges to lap a minimum of 2 in. Longitudinal jo ints shall be placed in the most suitable direction for shedding water. The jacket shall be secured with ¾-in. x 0.015 -in. stainless steel strapping and stainless -steel clips spaced 12 in . on center. A suitable adhesive that is compatible with polystyrene or urethane shall be applied to all joints and seams of the aluminum jacket making them completely watertight. All flanges, fittings and pipe clamps shall be covered with the same insulating material remolded and sized to make a tight fit with the pipe insulation and overlapping the pipe insulation 3 in. on each end. Prior to the application of the aluminum Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.80 202 4 Edition jacket all open ends of insulation covering flanges, fittings and pipe clamps shall be covered with a layer of 20 x 20 mesh, asphalt coated glass fabric embedded in suitable adhesive mastic cement. COMPENSATION 301.80: Method of Measurement Water pipe will be measured in place along the axis of the pipe without deduction for the space occupied by valves, excluding however, the length occupied by new fittings. Where two pipes join, measurement will be made to the intersection of the axes, excluding the length occupied by new cast iron fittings. Fittings, consisting of bends, tees, caps, wyes, sleeves, reducers, increasers, blow -off fittings and other specials, applies only when new materials are necessary and which are not specifically provided for under other items in the Proposal. Fittings othe r than new will not be paid separately but only under the applicable foot items. When new fittings are measured for payment under the pound price for Item 308, the length occupied by the fittings will not be measured for payment under the foot items. The fittings (excluding accessories comprising of Rings, Gaskets, Bolts, Nuts, Washers and Clamps) will be measured by the pound and the quantity to be paid for shall be the weight stated on the invoice of the supplier or the manufacturer's rated weight as listed in the catalog whichever is the lesser. For new special fittings not listed in the catalog the weight payable will be the invoice weight. The Contractor shall furnish a copy of the Manufacturer's catalog at the start of work. Concrete collars required for gate and service boxes shall be included in the contract unit price for the relevant gate and service box items. Insulation will be measured by the foot under the applicable water pipe insulation item. Trench excavation in excess of 5 ft in depth and rock excavation shall be measured as specified in 148.80: Method of Measurement for Class B Trench Excavation and Class B Rock Excavation, respectively. 301.81: Basis of Payment Water system work will be paid for at the contract unit price under the respective items for the kind of work involved as set forth in the Proposal. New yokes and tie -rods will be paid for at the contract unit price per pound under Item 309. Payment for fittings other than new will be paid for at the contract unit price per foot under the relevant pipe items. The prices shall also include all excavation (except rock) to a maximum depth of 5 ft (as measured from the top of the trench to the bottom of the pipe barrel). Trench excavation greater than 5 ft and rock excavation will be paid for a specified in 140.81: Basis of Payment for Class B Trench Excavation and Class B Rock Excavation. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.81 202 4 Edition Backfill for trenches 5 ft or less in depth shall be included in the various items of pipe. Backfill for that part of a trench which is more than 5 ft in depth shall be included in the item for Class B Trench Excavation. If the material for backfill is obtained from borrow, it will be paid for at the contract unit price per cubic yard of the kind of borrow required. The prices shall also include all disinfection and testing of the water pipeline system. Payment for the restoration of surfaces over trenches shall be made at the contract unit price for the kind of materials used. Thrust blocks, where required, will be paid for at the contract unit price per cubic yard under Item 903, 3, 000 psi, 1.5 -inch , 470 Cement, Concrete Masonry. Insulation will be paid for at the contract unit price per foot under Item 373. Water Pipe Insulation, complete in place. 301.82: Payment Items *302. Ductile Iron Water Pipe (Rubber Gasket) .......................................................... Foot *303. Ductile Iron Water Pipe (Mechanical Joint) ...................................................... Foot 309. Ductile Iron Fittings for Water Pipe ..................................................................... Pound *313. Water Main Removed and Relaid .......................................................................... Foot *315. Water Main Removed and Stacked ....................................................................... Foot *347. Copper Tubing Type K ............................................................................................... Foot *349. Gate Valve ........................................................................................................................ Each *350. Gate and Gate Box ........................................................................................................ Each *351. Gate and Gate Box Removed and Reset .............................................................. Each *354. Gate Box Removed and Reset ................................................................................. Each *355. Gate and Gate Box Removed and Stacked .......................................................... Each *357. Gate Box ........................................................................................................................... Each 358. Gate Box Adjusted ........................................................................................................ Each *363. Corporation Cock ......................................................................................................... Each *367. Cast Iron Plug ................................................................................................................. Each *373. Water Pipe Insulation ................................................................................................ Foot 376. Hydrant ............................................................................................................................ Each 376.2 Hydrant Removed and Reset ................................................................................... Each 376.3 Hydrant Removed and Stacked .............................................................................. Each 381. Service Box ..................................................................................................................... Each 381.1 Service Box Removed and Reset ............................................................................ Each 381.2 Service Box Removed and Stacked ....................................................................... Each 381.3 Service Box Adjusted .................................................................................................. Each 384. Curb Stop ......................................................................................................................... Each 384.1 Curb Stop Removed and Reset ............................................................................... Each *Pipe or appurtenance size will be included as part of the item number in order to differentiate between the sizes. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges II.82 202 4 Edition
SCOPE OF WORK in other states
Get an email when 4 changes
Massachusetts revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: , Edition. View official source ↗