Common use of Excavating Clause in Contracts

Excavating. a. Excavation shall be by open cut method. Short sections of trench may be tunneled or direct bored with the approval of the Town. b. Stockpile excavated material in such a manner that it will not obstruct the flow of runoff, streams, endanger Work, impair the use or appearance of existing facilities, or be detrimental to the completed Work. c. Contractor shall segregate excavated material so as to maintain material suitable for backfill separate from material that is unsuitable. d. Trench dimensions at the pipe embedment and foundation zone unless noted otherwise shall be as follows: 1) Minimum width: Pipe outside diameter plus 18 inches. 2) Maximum width: Pipe outside diameter plus 24 inches. 3) Sides shall be vertical to a minimum of one foot above the top of pipe. e. Shape trench bedding to provide uniform bearing for the full pipe length. Bottom shall be free of protrusions that could cause point loading on pipe. Provide bell holes as required for properly making pipe joint. f. Do not over excavate. Excavation below grade shall be backfilled with Class I material. g. Undercut soils that become unsatisfactory by construction activity or by being left exposed to the weather and backfill with Class I material. h. Remove shoring, bracing, and sheeting, unless otherwise noted, as the trench is backfilled. i. Excavation of trench shall not advance more than 200 feet ahead of the installation. In no case should the excavation extend beyond that which can be backfilled by the end of the workday. j. Correct unstable soil conditions encountered at trench foundation by one of the following methods: 1) Excavate below grade as approved by Engineer and backfill with Class I material or approved substitute material. k. Rock and Hard Material 1) Excavate rock and hard material to a minimum depth of 4 inches below the pipe for pipes smaller than 30 inches and 6 inches for pipes 30 inches and larger. l. Pressure Lines: 1) Provide a minimum 3 feet of cover. 2) Excavate trenches to provide vertical curve chords that will not exceed the pipe manufacturer’s recommended joint deflection. 3) Provide concrete thrust blocks having a compressive strength of 3,000 psi at 28 days at change in horizontal and vertical direction and reduction in the pipe size, unless other restraint systems are approved. Cut trench sides vertical and square to receive concrete. Provide bearing area against trench wall as indicated in the Standard Detail. m. Gravity Lines: 1) Excavate trench to the design alignment and grade.

Excavating. a. Excavation shall be by open cut method. Short sections of trench may be tunneled or direct bored with the approval of the Town. b. Stockpile excavated material in such a manner that it will not obstruct the flow of runoff, streams, endanger Work, impair the use or appearance of existing facilities, or be detrimental to the completed Work. c. Contractor shall segregate excavated material so as to maintain material suitable for backfill separate from material that is unsuitable. d. Trench dimensions at the pipe embedment and foundation zone unless noted otherwise shall be as follows: 1) Minimum width: Pipe outside diameter plus 18 inches. 2) Maximum width: Pipe outside diameter plus 24 inches. 3) Sides shall be vertical to a minimum of one foot above the top of pipe. e. Shape trench bedding to provide uniform bearing for the full pipe length. Bottom shall be free of protrusions that could cause point loading on pipe. Provide bell holes as required for properly making pipe joint. f. Do not over excavate. Excavation below grade shall be backfilled with Class I material. g. Undercut soils that become unsatisfactory by construction activity or by being left exposed to the weather and backfill with Class I material. h. Remove shoring, bracing, and sheeting, unless otherwise noted, as the trench is backfilled. i. Excavation of trench shall not advance more than 200 feet ahead of the installation. In no case should the excavation extend beyond that which can be backfilled by the end of the workday. j. Correct unstable soil conditions encountered at trench foundation by one of the following methods: 1) Excavate below grade as approved by Engineer and backfill with Class I material or approved substitute material. k. Rock and Hard Material 1) Excavate rock and hard material to a minimum depth of 4 inches below the pipe for pipes smaller than 30 inches and 6 inches for pipes 30 inches and larger. l. Pressure Lines: 1) Provide a minimum 3 feet of cover. 2) Excavate trenches to provide vertical curve chords that will not exceed the pipe manufacturer’s recommended joint deflection. 3) Provide concrete thrust blocks having a compressive strength of 3,000 psi at 28 days at change in horizontal and vertical direction and reduction in the pipe size, unless other restraint systems are approved. Cut trench sides vertical and square to receive concrete. Provide bearing area against trench wall as indicated in the Standard Detail. m. Gravity Lines: 1) Excavate trench to the design alignment and grade.

Excavating. a. Excavation shall be by open cut method. Short sections of trench may be tunneled or direct bored with the approval of the TownCity. b. Stockpile excavated material in such a manner that it will not obstruct the flow of runoff, streams, endanger Work, impair the use or appearance of existing facilities, or be detrimental to the completed Work. c. Contractor shall segregate excavated material so as to maintain material suitable for backfill separate from material that is unsuitable. d. Trench dimensions at the pipe embedment and foundation zone unless noted otherwise shall be as follows: 1) Minimum width: Pipe outside diameter plus 18 inches. 2) Maximum width: Pipe outside diameter plus 24 inches. 3) Sides shall be vertical to a minimum of one foot above the top of pipe. e. Shape trench bedding to provide uniform bearing for the full pipe length. Bottom shall be free of protrusions that could cause point loading on pipe. Provide bell holes as required for properly making pipe joint. f. Do not over excavate. Excavation below grade shall be backfilled with Class I materialmaterial at no cost to the City. g. Undercut soils that become unsatisfactory by construction activity or by being left exposed to the weather and backfill with Class I material. h. Remove shoring, bracing, and sheeting, unless otherwise noted, as the trench is backfilled. i. Excavation of trench shall not advance more than 200 feet ahead of the installation. In no case should the excavation extend beyond that which can be backfilled by the end of the workday. j. Correct unstable soil conditions encountered at trench foundation by one of the following methods: 1) Excavate below grade as approved by Engineer and backfill with Class I material or approved substitute material. k. Rock and Hard Material 1) Excavate rock and hard material to a minimum depth of 4 inches below the pipe for pipes smaller than 30 inches and 6 inches for pipes 30 inches and larger. l. Pressure Lines: 1) Provide a minimum 3 feet of cover. 2) Excavate trenches to provide vertical curve chords that will not exceed the pipe manufacturer’s recommended joint deflection. 3) Provide concrete thrust blocks having a compressive strength of 3,000 psi at 28 days at change in horizontal and vertical direction and reduction in the pipe size, unless other restraint systems are approved. Cut trench sides vertical and square to receive concrete. Provide bearing area against trench wall as indicated in the Standard Detail. m. Gravity Lines: 1) Excavate trench to the design alignment and grade.

Excavating. a. Excavation shall be by open cut method. Short sections of trench may be tunneled or direct bored with the approval of the Town. b. Stockpile excavated material in such a manner that it will not obstruct the flow of runoff, streams, endanger Work, impair the use or appearance of existing facilities, or be detrimental to the completed Work. c. Contractor shall segregate excavated material so as to maintain material suitable for backfill separate from material that is unsuitable. d. Trench dimensions at the pipe embedment and foundation zone unless noted otherwise shall be as follows: 1) Minimum width: Pipe outside diameter plus 18 inches. 2) Maximum width: Pipe outside diameter plus 24 inches. 3) Sides shall be vertical to a minimum of one foot above the top of pipe. e. Shape trench bedding to provide uniform bearing for the full pipe length. Bottom shall be free of protrusions that could cause point loading on pipe. Provide bell holes as required for properly making pipe joint. f. Do not over excavate. Excavation below grade shall be backfilled with Class I materialmaterial at no cost to the Town. g. Undercut soils that become unsatisfactory by construction activity or by being left exposed to the weather and backfill with Class I material. h. Remove shoring, bracing, and sheeting, unless otherwise noted, as the trench is backfilled. i. Excavation of trench shall not advance more than 200 feet ahead of the installation. In no case should the excavation extend beyond that which can be backfilled by the end of the workday. j. Correct unstable soil conditions encountered at trench foundation by one of the following methods: 1) Excavate below grade as approved by Engineer and backfill with Class I material or approved substitute material. k. Rock and Hard Material 1) Excavate rock and hard material to a minimum depth of 4 inches below the pipe for pipes smaller than 30 inches and 6 inches for pipes 30 inches and larger. l. Pressure Lines: 1) Provide a minimum 3 feet of cover. 2) Excavate trenches to provide vertical curve chords that will not exceed the pipe manufacturer’s recommended joint deflection. 3) Provide concrete thrust blocks having a compressive strength of 3,000 psi at 28 days at change in horizontal and vertical direction and reduction in the pipe size, unless other restraint systems are approved. Cut trench sides vertical and square to receive concrete. Provide bearing area against trench wall as indicated in the Standard Detail. m. Gravity Lines: 1) Excavate trench to the design alignment and grade.