11-20-97

715-R-349
PIPE

The Standard Specifications are revised as follows:

SECTION 715, AFTER LINE 386, INSERT AS FOLLOWS:
      715.09 Pipe End Sections, Anchors, and End Treatments. Pipe end sections and anchors shall be constructed as shown on the plans or as directed. Straps or hook bolts required for anchors shall be as shown on the plans. A dimpled connection band shall be used for connecting pipe end sections to ends of corrugated metal pipe whose end corrugations are not perpendicular to the centerline of the pipe.

        A pipe end section or a concrete anchor installed on a structure where differing smooth interior or corrugated interior pipe sizes are permitted will be considered to be a pipe end treatment.

        715.10 Re-Laid Pipe. Where shown on the plans or as directed, existing pipe shall be taken up, re-laid, and if necessary, extended. Removal of the pipe shall be in accordance with 202.04 and the operations involved in its relaying shall be in accordance with similar operations contained herein for laying new pipe.

        715.11 Method of Measurement. The accepted quantities of circular pipe, deformed pipe, slotted drain pipe, slotted vane drain pipe, end bent drain pipe, and sanitary sewer pipe will be measured by the meter (linear foot), complete in place. The length of pipe to be measured for payment will be based on the net length of pipe used, which will be obtained by multiplying the nominal length of each pipe section by the number of sections used. If the pipe connects to manholes, inlets, or catch basins, the terminal sections will be field measured to the outside face of the structure. The length of beveled or skewed terminal sections of circular corrugated metal pipe to be measured for payment will be the average of the top and bottom centerline lengths for beveled ends or of the sides for skewed ends. Measurement of deformed pipe will be made along the bottom centerline of the pipe.

        Concrete in anchors will be measured in accordance with 702.27. Reinforcing steel, straps, and hook bolts used in anchors will not be measured for payment. Concrete used for backfill of slotted drain pipe and slotted vane drain pipe will not be measured for payment.

        Excavation above the trench bottom elevation shown on the plans will not be measured for payment. Additional excavation below the proposed trench bottom elevation required to install the pipe at a lower elevation or to remove rock or unsuitable material will be measured in accordance with 203.27(b).

        Pipe end sections will be measured by the number of units of each size installed. The size of the end section will be considered as the nominal diameter of the pipe to which the end section is attached, regardless of the size of the end section actually required to make the connection.

        Pipe end treatments will be measured by the number of units of each size installed. The size of the end treatment will be considered to be the size of the pipe to which it is attached.

        Tee, stub-tee, and wye branch connections will be measured along the centerline of the barrel. An additional allowance of 1.5 m (5 lft) of the smaller diameter pipe will be permitted for making such connection.

        Elbow connections will be measured along the centerline of such connection. An additional 0.6 m (2 lft) of pipe of the same diameter as that of the elbow will be permitted for making such connection.

        If increaser or reducer connections are made, measurement will be made on the basis of the larger diameter pipe for the full length of the section forming such connections.

        B borrow for structure backfill will be measured in accordance with 211.09. Flowable mortar will be measured in accordance with 213.06.

        For structures for which the plans permit pipes of differing sizes for either smooth or corrugated interiors, and the corrugated interior alternate is installed, measurement of B borrow for structure backfill or flowable mortar will be based on the neat line dimensions shown on the plans for the smooth interior alternate.

        715.12 Basis of Payment. The accepted quantities of pipe will be paid for at the contract unit price per meter (linear foot) for pipe of the type, shape, and size, specified, complete in place.

        Concrete used in anchors will be paid for in accordance with 714.07. Pipe end sections will be paid for at the contract unit price per each for the size specified, complete in place. Pipe end treatments will be paid for at the contract unit price per each for the size specified, complete in place. B borrow for structure backfill will be paid for in accordance with 211.10. If utilized as a substitute for B borrow for structure backfill or if used to backfill thermoplastic pipes fabricated of nonhydrostatic design basis resins, flowable mortar will be paid for as B borrow for structure backfill. Otherwise, flowable mortar will be paid for in accordance with 213.07.

        If a pipe structure is lowered, relocated, or if unsuitable material is encountered so that additional excavation is necessary over and above that shown on the plans at the original location, such additional excavation will be paid for at three times the contract unit price for the class of excavation involved. If the contract does not include rock excavation or unclassified excavation, rock removal below the proposed trench bottom elevation will be paid for at three times the contract unit cost for common excavation. However, in each of the above cases, such excavation will not be paid for if the additional amount involved at such structure is 8 m3 (10 cu yd) or less.

        Tee, stub-tee, and wye connections will be paid for by means of the allowance of 1.5 m (5 lft) of the smaller diameter pipe. Elbow connections will be paid for by means of the allowance of 0.6 m (2 lft) of pipe of the same diameter as the elbow. Increaser and reducer sections will be paid for at the contract unit price for the larger diameter pipe.

        For structures for which the plans permit pipes of differing sizes for either smooth or corrugated interiors, and the corrugated interior alternate is installed, payment for pipe backfill will be made based on the neat line dimensions shown on the plans for the smooth interior alternate.

        Payment will be made under:

            Metric Pay Item Metric                                                                                      Pay Unit Symbol
            (English Pay Item                                                                               English Pay Unit Symbol)
            Pay Item                                                    Metric Pay Unit Symbol (English Pay Unit Symbol)

            Concrete, A, Structures.........................................................................m3 (CYS)
            Pipe, End Bent Drain, _________ mm..................................................m
                                                   diameter
            (Pipe, End Bent Drain, __________ in...............................................LFT)
                                                    diameter
            Pipe End Section, ________ mm.......................................................EACH
                                           diameter
            (Pipe End Section, ________ in........................................................EACH)
                                            diameter
            Pipe End Section, Min. Area ________ sq m....................................EACH
            (Pipe End Section, Min. Area ________ sq ft...................................EACH)
            Pipe End Treatment,______mm or______mm................................EACH
                                            diameter         diameter
            (Pipe End Treatment,______in. or______in...................................EACH)
                                            diameter        diameter
            Pipe End Treatment, Min. Area______sq m or ______sq m............EACH
            (Pipe End Treatment, Min. Area______sq ft or ______sq ft............EACH)
            Pipe Extension, Circular, ________ mm, ________..............................m
                                                      diameter            material
            (Pipe Extension, Circular, ________ in., ________...........................LFT)
                                                       diameter           material
            Pipe Extension, Deformed, Min. Area ________ sq m,________..........m
                                                                                                    material
            (Pipe Extension, Deformed, Min. Area ________ sq ft, ________......LFT)
                                                                                                     material
            Pipe, Relaid, ________ mm......................................................................m
                                  diameter
            (Pipe, Relaid, ________ in......................................................................LFT)
                                    diameter
            Pipe, Relaid, ________ mm x ________ mm...........................................m
                                    span                      rise
            (Pipe, Relaid, ________in. x ________ in...............................................LFT)
                                    span                   rise
            Pipe, Sanitary Sewer, ________ mm.........................................................m
                                                diameter
            (Pipe, Sanitary Sewer, ________ in........................................................LFT)
                                                  diameter
            Pipe, Slotted Drain, ________ mm, ________ mm.................................m
                                             diameter           thickness
            (Pipe, Slotted Drain, ________ in., ________ in.....................................LFT)
                                              diameter          thickness
            Pipe, Slotted Vane Drain, ________ mm....................................................m
                                                       diameter
            (Pipe, Slotted Vane Drain, ________ in.................................................LFT)
                                                        diameter
            Pipe, Type ____, Circular, ________ mm.................................................m
                                                        diameter
            (Pipe, Type ____, Circular, ________ in................................................LFT)
                                                         diameter
            Pipe, Type ____, Deformed, Min. Area ________ sq m..............................m
            (Pipe, Type ____, Deformed, Min. Area ________ sq ft..........................LFT)
            Pipe, Underdrain Outlet, ________ mm.......................................................m
                                                     diameter
            (Pipe, Underdrain Outlet, ________ in..................................................LFT)
                                                       diameter

        The costs of reinforcing steel, straps, and hook bolts used in anchors shall be included in the cost of concrete, A, structures. The costs of the toe plate anchor and galvanized bolts shall be included in the cost of pipe end section. The cost of backfill for slotted drain pipe and slotted vane drain pipe shall be included in the costs of the pay items.

        B borrow obtained from planned excavation may be used to backfill culverts. No deduction will be made from the excavation or borrow quantities.

        If existing concrete building foundations, concrete walls, concrete columns, or concrete steps not visible and not shown on the plans are encountered within the limits of the trench, the removal of such items, as required, will be paid for in accordance with 203.28.

        The costs of sawing of pavement, excavation above the trench bottom elevation shown on plans, backfilling with material other than B borrow for structure backfill or flowable mortar, dewatering, shoring, timber mats, pavement replacement, class A concrete required for collar construction or sealing existing pipe, joint materials, replacing pipe which is damaged during installation or re-laying operations, sanitary sewer testing required by the local utility, and all other necessary incidentals shall be included in the cost of the pay items. The cost of removal of pavement, existing pipe, end sections, anchors, or headwalls, concrete collars, encasements, and the disposal of surplus materials shall be included in the cost of the pay items.