PIPE INSTALLATION. A. General: Unload pipe, fittings and accessories near the place where they are to be laid in the trench, and handle with care to avoid damage. Cutting of pipe shall be done by means of an approved type of mechanical cutter.
B. Placement of Pipe:
1. Clean and inspect all sections of pipe, fittings and accessories for damage immediately prior to placement in the trench. Reject all defective materials, and remove them from the project. Place pipe, fittings and accessories in the trench, and position them utilizing hoisting equipment. Lay pipe true to line and grade, with uniform bearing under the full length of the pipe barrel.
2. Connect pipe joints and fittings in accordance with the pipe manufacturers' recommendations. Gaskets and lubricants shall be the type recommended by the pipe manufacturer. Insert the spigot end of the pipe into the bell to the required depth and in such manner as to avoid displacement of the gasket. Jointing of mechanical-joint pipe shall be accomplished such that the gland is positioned evenly by tightening alternately the bolts spaced 180 degrees apart.
3. At times when pipe laying is not in progress, close the open ends of the pipe with a watertight plug. This provision shall apply during the lunch period, overnight, or any other time when work is not in progress.
4. No pipe shall be laid in wet trench conditions that preclude proper bedding, or on a frozen trench bottom, or when in the opinion of the Engineer, the trench conditions or the weather are unsuitable for proper installation.
C. Concrete Thrust Blocking
1. Install concrete thrust blocking at pipe bends, tees, fire hydrants, and other locations shown on the Drawings. Place the concrete between solid ground and the fitting to be anchored. Care shall be taken to place the thrust block such that the pipe and fitting joints will be accessible for repair.
2. The shape and contact area of the concrete thrust blocks shall be as shown on the Drawings and as directed by the Engineer. The contact area of backing shall be as required to prevent movement of the joint, but in no case shall the contact area be less than one square foot.
D. Connections to Mains
1. Connect new water mains to existing mains as shown on the Drawings.
2. Prior to valving off the existing main, assemble all equipment and fittings before excavating and exposing the main. Coordinate closing and opening of valves with the Utility. Connect to the new main using adapters and fittings specified. Bedding, backfi...
PIPE INSTALLATION. All pipes must be laid to the design lines and grades within the following tolerances:
PIPE INSTALLATION. (11-20-12) (Rev. 8-18-15) 300 SP3 R01 Revise the 2012 Standard Specifications as follows: Flowable Fill, Excavatable 1000-6 Grout, Type 2 1003 Geotextiles, Type 4 1056 Provide foundation conditioning geotextile and geotextile to wrap pipe joints in accordance with Section 1056 for Type 4 geotextile. (10-19-10) (Rev. 1-17-12) 422 SP4 R02 Bridge approach fills include bridge approach fills for sub regional tier bridges and reinforced bridge approach fills. Construct bridge approach fills in accordance with the contract and Standard Drawing No. 422.10 or 422.11 of the 2012 Roadway Standard Drawings. Define “geosynthetics” as geotextiles or geomembranes. Refer to Division 10 of the 2012 Standard Specifications. Anchor Pins 1056-2 Geotextiles 1056 Portland Cement Concrete 1000 Select Material 1016 Subsurface Drainage Materials 1044 Wire Staples 1060-8(D) For bridge approach fills for sub regional tier bridges, provide Type 1 geotextile for filtration geotextiles. For reinforced bridge approach fills, provide Type 5 geotextile for geotextile reinforcement and Type 1 geotextile and No. 78M stone for drains. Use Class B concrete for concrete pads. Use Class III or V select material for reinforced bridge approach fills and only Class V select material (standard size No. 78M stone) for bridge approach fills for sub regional tier bridges. Provide PVC pipes, fittings and outlet pipes for subsurface drainage materials. For drains and PVC pipes behind end xxxxx, use pipes with perforations that meet AASHTO M 278. Use PVC, HDPE or linear low density polyethylene (LLDPE) geomembranes for reinforced bridge approach fills. For PVC geomembranes, provide grade PVC30 geomembranes that meet ASTM D7176. For HDPE and LLDPE geomembranes, use geomembranes with a nominal thickness of at least 30 mils that meet Geosynthetic Research Institute Standard Specifications GM13 or GM17, respectively. Handle and store geomembranes in accordance with Article 1056-2 of the 2012 Standard Specifications. Provide material certifications for geomembranes in accordance with Article 1056-3 of the 2012 Standard Specifications.
PIPE INSTALLATION. A. Pipe:
1. Contractor shall exercise care in handling, load- ing, unloading, and storing pipe and fittings.
PIPE INSTALLATION. 1 Install HDPE liner pipes true to line and grade. .2 Handle pipe using methods recommended by pipe manufacturer.
PIPE INSTALLATION. TS-415 All piping shall be properly supported or suspended on stands, clamps, hangers, etc. of approved design. Supports shall be designed to permit free expansion and contractions while minimizing vibration. Pipes shall be anchored as directed by means of steel clamps securely fastened to the pipe and rigidly attached to the building structure. TS-416 Screw threads shall be cut clean and true and joints made tight without caulking. No bushing shall be used. Reducing fittings shall be used to change pipe size, and reductions to be made with eccentric reducers, short radius fittings shall not be used. TS-417 The drawings indicated generally the size and location of piping as designed for space conditions; ceilings heights and may not be changed until coordinated other contractors. If it is seemed necessary to modify the piping system the contractor shall size the pipes on the basic of 3-6 fps. Velocity and re-check pump heads which are presently indicative and for purposes of an estimate. TS-418 Piping shall be properly graded to secure easy circulation and prevent noise and water hammer. As much pitch as space conditions allow must be given. Capped dirt pockets to be installed at all risers heel, low points, and other places where dirt may accumulate must be provided. Allowance must be made for proper provision for expansion and contractions in all portions of pipe work to prevent undue strain in piping or machines. Expansion joints to be installed as directed by the Managing official. TS-419 All fittings such as elbow, tees, bushes etc. shall be of best quality foreign made or local class "A" according local standard with smooth interior surfaces. Approved screw unions with bronze or steel bodies and ground brass taper or spherical joints shall be installed at traps instruments, etc. and where else directed to permit easy connection and disconnection.
PIPE INSTALLATION. (11-20-12) 300 SP3 R01 Revise the 2012 Standard Specifications as follows: Provide foundation conditioning geotextile in accordance with Section 1056 for Type 4 geotextile.
PIPE INSTALLATION. Piping shall be installed as indicated on the Drawings. Where exact locating dimensions of piping are not indicated on the Drawings, the Landscape Architect's approval shall be obtained for proposed locations before installation.
PIPE INSTALLATION. (11-20-12) 300 SP3 R01 Revise the 2012 Standard Specifications as follows: Provide foundation conditioning geotextile in accordance with Section 1056 for Type 4 geotextile. (6-19-12) (Rev. 10-21-14) 605, 609, 610, 650, 660 SP6 R01 Revise the 2012 Standard Specifications as follows: Apply tack coat uniformly across the existing surface at target application rates shown in Table 605-1. New Asphalt 0.04 ± 0.01 Oxidized or Milled Asphalt 0.06 ± 0.01 Concrete 0.08 ± 0.01 Apply tack coat at a temperature within the ranges shown in Table 605-2. Tack coat shall not be overheated during storage, transport or at application. Warm mix asphalt (WMA) is allowed for use at the Contractor’s option in accordance with the NCDOT Approved Products List for WMA Technologies available at:
PIPE INSTALLATION. (11-20-12) (Rev. 8-18-15) 300 SP3 R01 Revise the 2012 Standard Specifications as follows: Item Flowable Fill, Excavatable Section 1000-6 Grout, Type 2 1003 Geotextiles, Type 4 1056 Provide foundation conditioning geotextile and geotextile to wrap pipe joints in accordance with Section 1056 for Type 4 geotextile. (11-18-14) 510 SP5 R12 As directed by the Engineer, stabilize xxxxx subgrade material with Class IV aggregate to prevent rutting of the subgrade prior to paving directly on the subgrade. Remove material as needed in cut areas prior to placing the Class IV aggregate. Refer to Division 10. Select Material, Class IV 1016 Use Class IV Select Material for Class IV Aggregate Stabilization.
