Specifications - City of Montpelier, Vermont

Title:02200 – EarthworkMontpelier District HeatingCity of Montpelier, VTIssue Date:September 28, 2012Page #:10 of 163. Rockexcavating equipment for open excavations shall be equivalent to CaterpillarModel No. 973, heavyduty, trackmounted loader, rated at not less than 210hpflywheel power and developing minimum of 45,000lb breakout force, measuredaccording to SAE Standard J732c69.a. Excavations more than 10 feet in width and pits more than 30 feet in eitherlength or width are defined as open excavations.4. Do not excavate rock until it has been classified and crosssectioned by Engineer.3.4 STABILITY OF EXCAVATIONSA. Comply with local codes, ordinances, and requirements of authorities having jurisdictionto maintain stable excavations.3.5 EXCAVATION FOR STRUCTURESA. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 0.10foot. Extend excavations a sufficient distance from structures for placing and removingconcrete formwork, installing services and other construction, and for inspections.1. Excavations for Footings and Foundations: Do not disturb bottom of excavation.Excavate by hand to final grade just before placing concrete reinforcement. Trimbottoms to required lines and grades to leave solid base to receive other work.2. Excavation for Underground Tanks, Basins, and Mechanical or ElectricalAppurtenances: Excavate to elevations and dimensions indicated within a toleranceof plus or minus 0.10 foot. Do not disturb bottom of excavations intended forbearing surface.3.6 EXCAVATION FOR WALKS AND PAVEMENTSA. Excavate surfaces under walks and pavements to indicated cross sections, elevations, andgrades.3.7 EXCAVATION FOR UTILITY TRENCHESA. Excavate trenches to indicated slopes, lines, depths, and invert elevations.1. Beyond building perimeter, excavate trenches to allow installation of top of pipebelow frost line.EARTHWORK 02200 10