SECTION 710 — CUT-INS FOR MANHOLES, CATCH BASINS, AND PIPE — CUT-INS FOR MANHOLES, CATCH BASINS, AND PIPE
710.01 Description.
This work includes cutting into existing manholes, catch basins, and pipe to accommodate new construction at the required locations.
710.02 Materials.
Provide materials for brickwork that conform to Subsection M04.03.
710.03 Construction Methods.
Manhole and Basin Cut-Ins. Cut into the existing manholes and/or catch basins at the required grade. Make t he cut-in with the approval and acceptance of the Engineer. Restrict o verbreakage to not more than 2 in. beyond the outside circumference of the connecting pipe. Lay brick as headers on the edge around the pipe and mortar in place. Perform excavation for cut-ins according to SECTION 205. Plaster the outside face of brick walls to a thickness of ½ in. with mortar proportioned as specified in Subsection M04.03.5. Trowel the mortar to a smooth hard finish. Do not place backfill until the mortar has hardened. Pipe Cut-Ins. Locate pipe cut -ins where a new manhole or catch basin will be inserted on an existing line. Perform pipe cut-ins by one of the following methods: • Cutting the Pipe Before Performing Any Work in Constructing the New Manhole. In exercising this option, provide the Engineer with the proposed methods to maintain the flow or service provided by the pipe to be cut. T he Engineer must approve the methods before commencing work. • C onstructing the Manhole on and Around the Pipe Before Making the Cut . Under this method, excavate around the pipe to the outer limits of the new manhole. Support and brace the pipe to ensure against breakage or misalignment that will result in leakage. The Engineer must approve the method for accommodating the pipe flow should breakage occur. The manhole invert may be constructed using the lower half of the existing pipe. Ensure that the jointing between the pipe and manhole wall is watertight. Perform excavation for pipe cut-ins according to SECTION 203.
710.04 Method of Measurement.
Not applicable.
Part 700 — Drainage and Selected Utility Accessories August 2025
SECTION 710 — CUT-INS FOR MANHOLES, CATCH BASINS, AND PIPE 700-31
710.05 Basis of Payment.
Manhole and Catch Basin Cut-Ins. Payment for Manhole and Catch Basin Cut-Ins will not be made separately but will be included in the Contract unit price per linear foot of the specific pipe involved as set forth in SECTION 701. Pipe Cut-Ins. Payment for Pipe Cut -Ins will not be made separately but will be included in the Contract unit price per each of the specific drainage structure involved as set forth in SECTION 702.
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