Appendix F Debris Estimating Formulas：附录F碎片的估算公式

Appendix F Debris Estimating Formulas：附录F碎片的估算公式 APPENDIX F DEBRIS ESTIMATING GUIDES Appendix F: Debris Estimating Guides Page 1 Debris Estimating Formulas Estimating Rule of Thumb: , 15 trees, 8 inches in diameter = 40 CY , Single wide mobile home = 290 CY , Double wide mobile home = 415 CY , Root system (8’-10’ dia.) = One flat bed trailer to move , Treat debris piles as a cube, not a cone, when performing estimates. Average pace = 2’ 6” , Formulas Conversions: , 27 cubic feet=1 cubic yard , One mile=5280 feet or 1760 yards Building formula: L’xW’ (building footprint) x No. of Stories x 0.2 = _______Cubic Yards of debris Debris pile formula: (L’xW’xH’)/27= ______Cubic Yards of debris. Conversion Factors from Cubic Yards to Tons , Mixed Construction & Demolition Debris = 500 LBS/CY or CY x 0.25 = Tons , Yard Vegetation = 300 LBS/CY or CY x 0.15 = Tons , Mulch = 500 LBS/CY or CY x 0.25 = Tons , Regular Trash = 300 LBS/CY or CY x 0.15 = Tons , Concrete = 2000 LBS/CY or CY x 1.0 = Tons , Sand = 2600 LBS/CY or CY x 1.3 = Tons , Land Clearing (Root balls with dirt) 1500 LBS/CY or CY x 0.75 = Tons Appendix F: Debris Estimating Guides Page 2 The following information will assist you in determining the amount of debris from destroyed buildings and mobile homes: One Story House Formula: L’ x W’ x 8’ =cubic yards x 0.33 = _____cubic yards of debris. (The 0.33 factor accounts for the “air space” in the house) The table below can be used to estimate debris quantities for a totally ,destroyed typical home. A vegetative debris multiplier is also included. Amount of personal property (as debris) from average flooded residence without a basement: , 25-30 cy. Amount of personal property (as debris) from average flooded residence with a basement: , 45-50 cy. VEGETATIVE COVER MULTIPLIER Typical House (YARD WASTE) MediumHeavy (1.5) (Square Feet) None Light (1.1) (1.3) 107 cy 147 cy 1000 SF 98 cy 127 cy 129 cy 177 cy 1200 SF 118 cy 153 cy 150 cy 205 cy 1400 SF 137 cy 178 cy 170 cy 232 cy 1600 SF 155 cy 201 cy 192 cy 263 cy 1800 SF 175 cy 228 cy 215 cy 293 cy 2000 SF 195 cy 254 cy 237 cy 323 cy 2200 SF 215 cy 280 cy 259 cy 353 cy 2400 SF 235 cy 306 cy 280 cy 383 cy 2600 SF 255 cy 332 cy , Single wide mobile home = 290 cy of debris , Double wide mobile home = 415 cy of debris Rule of Thumb: , 15 trees 8 inches in diameter = 40 cy (average) , Root system (8’-10’ diameter) = requires one flat bed trailer to move. , To convert cubic yards of Construction and Demolition (C & D) debris to tons, divide by 2. , To convert tons of C & D debris to cubic yards, multiply by 2. , To convert cubic yards of woody debris to tons, divide by 4*. , To convert tons of woody debris to cubic yards, multiply by 4*. Appendix F: Debris Estimating Guides Page 3