816 Cellular concrete grout shall be inj ected into the annu lar space between the existing pipe and the liner pipe. The injection operation shall provide sufficient cellular concrete grout to fill all voids between the existing pipe and the liner pipe over the entire structure length, but shall also be performed in a manner that does not distort the liner pipe. Injection of the cellular concrete grout in lifts, use of spacers, or other safeguards shall be taken to keep the liner pipe in position and prevent the liner pipe from floating. The pressure developed in the annular space between the liner pipe and the existing pipe shall not exceed the liner pipe manufacturer’s recommended maximum value. 240 All existing culverts, storm drains, underdrain pipes, drain tile, or other pipes that are directly connected to the lined structure shall be perpetuated. Cellular concrete grout shall not leak through the liner pipe at these connections.
725.09 Method of Measurement
All thermoplastic liner pipe will be measured by the linear foot, for the shape and cross-sectional area of the lin er pipe, complete in place. Perpetuation of existing pipes through the liner pipe will be measured by the number of existing pipes perpetuated. 250 No measurement will be made of liner pipe joints or the length of joint welding or fusing, or other incidentals necessary to join sections of liner pipe in accordance with the manufacturer’s recommendations. The liner pipe or flat sheet stock used for destructive testing will not be measured for payment. No measurement will be made of a liner pipe meeting the required opening area that does not fit. No measurement will be made for debris removal and disposal, filling existing voids, or trimming, cutting, jacking, or other corrective measures performed on jagged edges or other deformities of the existing pipe to facilitate installation of the liner pipe. No measurement will be made for visual or video inspection of the existing pipe. 260 No measurement will be made for the bulkhead.
725.10 Basis of Payment
The accepted quantities of thermoplastic liner pipe will be paid for at the contract unit price per linear foot for the shape and cross-sectional area of the liner pipe, complete in place. Perpetuation of existing pipes through the liner pipe will be paid for by the number of existing pipes perpetuated. Payment will be made under: 270 Pay Item Pay Unit Symbol Liner Pipe, Thermoplastic, Circular, _______sq ft ................... LFT cross-sectional area Liner Pipe, Thermoplastic, Deformed, _______ sq ft ............... LFT cross-sectional area Perpetuation, Existing Pipe ....................................................... EACH 725.09 The cost of repairing, trimming, or cutting jagged edges or deformities to existing 280 pipe, filling cavities around the existing pipe with cellular concrete grout, acquisition and restoration of right-of-entry areas, acquiring all necessary new permits or amendments to existing perm its to work in areas accessi ble via Contr actor-obtained right-of-entry, erection, maintenance, and removal of temporary fence, removal and disposal of debris and foreign material from the existing pipe, visual or video inspection of the existing pipe, deforming a circular liner pipe, supplying and constructing the bulkheads, grouting the an nular space between the existing pipe and the liner pipe, and other incidentals will not be paid separately, but shall be included in the cost of the pay items in this section. 290 The cost of liner pipe joints other incide ntals necessary to join sections of liner pipe in accordance with the ma nufacturer’s recommendations, and all test sections of liner pipe and test sections of HDPE sheet stock shall be included in the cost of the pay items in this section. All costs associated with having a QC representative on site shall be included in the cost of the pay items in this section. The cost of training and certifying an operator, destructive and non-destructive testing, liner pipe, and incidentals used in destructive testing, and all costs associated 300 with the development of an acceptable QCP shall be included in the cost of the pay items in this section. Any joint that does not pass the visual inspection and needs to be re-fused, re- welded, or re-joined shall be done at no additional cost to the Department. In situations where the condition of the ex isting pipe requires that a substitute liner pipe be utilized, there will be no reduction in payment for the installation of the substitute liner pipe. There will be no additional payment for the additional cellular concrete grout required to fill the larger void between the existing pipe and the smaller 310 liner pipe. There will be no payment for the installation or removal of any liner pipe that cannot be successfully installed due to the condition of the existing pipe. There will be no payment for a liner pipe meeting the required cross-sectional area that does not fit. If the existing pipe or any other obj ect not designated for removal is damaged while performing this work, it shall be considered unauthorized work and repaired or replaced in accordance with 105.11. 320 725.10