3-5 (D) Bedding and Backfill with Select Material
No measurement will be made for select bedding and backfill material required in the contract. The select bedding and backfill material will be included in the cost of the installed pipe. Where unclassified excavation or borrow material meets the requirements for select bedding and backfill and is approved for use by the Engineer, no deductions will be made to these pay items to account for use in the pipe installation. Payment will be made under: Pay Item Pay Unit Foundation Conditioning Material, Minor Structures Ton Foundation Conditioning Geotextile Square Yard
305-1 Description
Where shown in the plans, the Contractor may use reinforced concrete pipe, aluminum alloy pipe, aluminized corrugated steel pipe, galvanized corrugated steel pipe, HDPE pipe , polypropylene pipe or PVC pipe in accordance with the following requirements.
305-2 Materials
Refer to Division 10. Item Section Aluminized Corrugated Steel Pipe 1032 -3(A)(7) Corrugated Aluminum Alloy Pipe 1032 -2(A) Corrugated HDPE Pipe 1032 -7 Polypropylene Pipe 1032 -4 Elbows 1032 PVC Pipe 1032 -8 Reinforced Concrete Pipe, Class II , III, IV, or V 1032 -6(B) Corrugated steel pipe will not be permitted in counties listed in Article 310 -2. Only pipe with smooth inside walls will be allowed for storm drain systems. Define “storm drain systems” as pipe under curb and gutter, expressway gutter and shoulder berm gutter that connects drainage structures and is not open ended. Corrugated pipe wi thout a smooth interior is only for use at storm drain system inlets and outlets if pipe slope is greater than 10%.
305-3 Construction Methods
Install pipe culverts in accordance with Section 300. Where allowed by the plans, use any of the several alternate pipes shown herein, but only one type of pipe and elbow will be permitted between drainage structures or for the entire length of a cross line pipe.
305-4 Measurement and Payment
__" Drainage Pipe will be measured and paid as the actual number of linear feet of pipe that has been incorporated into the completed and accepted work. Measurem ent of pipe will be made by counting the number of joints used and multiplying by the length of the joint to obtain the number of linear feet of pipe installed and accepted. Measurements of partial joints will be made along the longest length of the parti al joint to the nearest 0.1 f oot. Select bedding and backfill material will be included in the cost of the installed pipe. __" Drainage Pipe Elbow will be measured and paid in units of each.
DRAINAGE PIPE in other states
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