for Highway Construction Page 477 of 71 5 SECTION 603 – PIPE SIPHONS
603.01 Description.
Provide and install pipe siphons .
603.02 Materials.
Provide materials as specified in 601. Provide pipe joints that are leak -resistant with a maximum working pressure of 10 psi as specified in 601.02. Provide size No. 1, 2a, or 2b coarse aggregate for concret e as specified in 703.02 and ¾ inch minus aggregate for untreated b ase as specified in 703.04.
603.03 Construction Requirements.
Install metal pipe siphons as specified in 601.03.
603.04 Method of Measurement.
The Engineer will measure acceptably completed work by the foot along pipe centerline. The Engineer may calculate the length from the dimensions of the approved siphon layout.
603.05 Basi s of Payment .
The Department will pay for acceptable quantities as follows: Pay Item Pay Unit __ Pipe Siphon ....................................................................................... FT Structure excavation, compacting backfill, trench zone backfill , and pipe bedding zone material are incidental and included in the pipe siphon contract unit price. for Highway Construction Page 478 of 71 5 SECTION 604 – IRRIGATION PIPELINES
604.01 Description.
Provide and install irrigation pipelines.
604.02 Materials.
Provide materials as specified in 601. Provide pipe j oints that are leak -resistant with a maximum working pressure of 10 psi as specified in 601.02. Provide size No. 1, 2a, or 2b coarse aggregate for concrete as specified in 703.02 and ¾ inch minus aggregate for untreated base as specified in 703.04.
604.03 Construction Requirements.
Install pipe as specified in 601.03.
604.04 Method of Measurement.
The Engineer will measure acceptably completed work by the foot along pipe centerline. The Engineer wi ll allow an additional 1 foot for each connecting band used in making an authorized extension of existing corrugated metal pipe.
604.05 Basis of Payment .
The Department will pay for accepted quantities as follows: Pay Item Pay Unit __ Irrigation Pipe .................................................................................... FT Structure excavation, compacting backfill, trench zone backfill, and pipe bedding zone material are incidental and included in the irrigation pipe contract unit price.