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Specifications - City of Montpelier, Vermont

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Title:02200 – Earthwork<strong>Montpelier</strong> District Heating<strong>City</strong> <strong>of</strong> <strong>Montpelier</strong>, VTIssue Date:September 28, 2012Page #:9 <strong>of</strong> 16c. Permeability (ASTM D 4491): 150 gallons per minute per sq. ft.PART 3EXECUTION3.1 PREPARATIONA. Protect structures, utilities, sidewalks, pavements, and other facilities from damagecaused by settlement, lateral movement, undermining, washout, and other hazardscreated by earthwork operations.B. Protect subgrades and foundation soils against freezing temperatures or frost. Provideprotective insulating materials as necessary.C. Provide erosion control measures to prevent erosion or displacement <strong>of</strong> soils anddischarge <strong>of</strong> soilbearing water run<strong>of</strong>f or airborne dust to adjacent properties andwalkways.D. Clear trees and brush to the limits shown on the plans. Protect trees noted to remain andon the edge <strong>of</strong> clearing limits. Tree protection is specified in the Division 2 Section"Site Clearing."E. Dewatering is specified in the Division 2 Section “Dewatering”3.2 EXCAVATIONA. Explosives: Do not use explosives.B. Classified Excavation: Excavation is classified and includes excavation to requiredsubgrade elevations. Excavation will be classified as earth excavation or rock excavationas follows:1. Earth excavation includes excavation <strong>of</strong> pavements and other obstructions visible onsurface; underground structures, utilities, and other items indicated to be demolishedand removed; together with soil and other materials encountered that are notclassified as rock or unauthorized excavation.a. Intermittent drilling, or ripping to increase production and not necessary topermit excavation <strong>of</strong> material encountered will be classified as earth excavation.2. Rock excavation includes removal and disposal <strong>of</strong> rock material and obstructionsencountered that cannot be removed by the following heavyduty rock excavatingequipment without systematic drilling, blasting, or ripping.a. Rock material includes boulders larger than one cubic yard in volume and rockin beds, ledges, unstratified masses, and conglomerate deposits.EARTHWORK 02200 9

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