LARE Section 4 Questions & Answers 100% Correct(SCORED A+)

Advantages of asphalt paving - ANSWERLow installation cost Low reflectivity Low maintenance cost Disadvantages of asphalt paving - ANSWERPropensity to erode at edges Susceptibility to frost damage Aggregate in concrete mix, diameter not to exceed: - ANSWER1/3 slab thickness Borrow Pit Method (grading) - ANSWERAlso known as Grid Method, used to calculate cut/fill quantities. Entails laying out a grid across a construction site, and assigning an elevation to each point on a grid. Finer grids produce more accurate results. Organization referred to when writing a reference spec for vehicular grade asphalt - ANSWERAASHTO - American Association of State Highway and Transportation Officials Items always included in a Demolition Plan - ANSWERSurvey Base, Hardscape to be Removed, limits of work. Tree protection fencing would be located on a Tree Protection and Removal Plan. What is the Rational Method use for? - ANSWERUsed to calculate peak run-off rates, used for site under 20 acres. Equation is Q=ciA Q=ciA - ANSWERThe Rational Method for peak run-off rates. Q = Peak Discharge (cubic feet / second) c = Coefficient i = rainfall intensity (usually inches/hour) A= Area (usually acres) Proper dust control reduces: - ANSWERthe volume of sediments produced by construction activities Extensive Green Roof - ANSWERSoil Depth of 2-4", low maintenance, no permanent irrigation, low plants like perennials and sedums Intensive Green Roof - ANSWER> 8" soil depth, may be irrigated, trees may be planted, high maintenance