715— Temporary Pipe and Pipe Arch

715.1 Description

1 Furnish, install, and remove temporary pipe or pipe arches .

715.2 Materials

715.2.1 General

1 Use materials specified for permanent installations in SC -M-714 or the items listed herein for temporary pipe installations unless specified in the Plans or by the RCE. For materials and installation methods not detailed in SC-M-714 or the Standard Drawings , provide a copy of the pipe manufacturer’s fill height tables and installation specifications to the RCE before installing temporary pipe. Note that the fill height tables shown on the Standard Drawings are only appropriate for installation procedures described in SC-M-714. For pipe that will not be structurally loaded, fill height table and installation specifications are not required.

715.2.2 Permanent Pipe Used as Temporary Pipe

1 Pipe meeting SC-M-714 may be installed for temporary use. Once the pipe has been used in a temporary application, the pipe may not be used in a subsequent permanent installation.

715.2.3 Galvanized Corrugated Steel Pipe and Pipe Arch (CSP)

1 Provide c orrugated steel pipe (CSP) meeting AASHTO M 36 and corrugated steel pipe arch (CSPA) meeting AASHTO M 36 , Type II. Where elliptical pipe is specified, furnish pipe that is distorted from a true circle to provide an increase in the vertical diameter of approximately 5%. Perform distortion at the fabricating shop. 2 Ensure that the dimensions of the pipe arch are according to AASHTO M 36, Type II as measured from the inside crest of the corrugations. 3 Fabricate end sections from materials conforming to AASHTO M 218.

715.2.4 Corrugated High Density Polyethylene Pipe (HDPE)

Type C 1 Provide corrugated high density polyethylene pipe conforming to AASHTO M 294, Type C or Type S. 2 For Type C pipe, provide pipe with corrugated high density surface both inside and outside.