-Density of Asphalt mix= 112lb/sq. yd./in
1-calculate volume of asphalte needed = 3200 square yards * thickness 2 inches = 6400 square yards x inch.
2-Calculate mass of asphalte needed -ÂÂÂÂ--
Mass = density X volume
Mass = 112lb/sq. yd./in x 6400 square yards x inch
=
716 800 lbs for 2 inches thickness
=
1 433 600 lbs for 4 inches thickness
716800 pound = 358.4 ton US = 325.13 ton (metric)
1 433 600 pound = 716.8 ton US = 650.3 ton (metric)
Assuming that only 5.4 % of mix is asphalt concrete then 716 800 * 0.054 = 38 707 lbs of Asphalt concrete
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This response is based on the following document:
http://www.cleanaircounts.org/Resource% ... ssions.doc
Example
For a one acre parking lot, using the assumption of all emulsified asphalt used, with a 5 in thickness, the calculation can be done in the following manner:
(Area) * (thickness) = Volume of parking lot.
Density of Asphalt mix= 112lb/sq. yd./in( typical factor, depends on mix from Bureau of Materials, IDOT)
1 Acre*5in*(112lb/sq.yd/in)*(4840sq yd/acre)=2710400 lbs of asphalt needed.
Assuming that only 5.4 % of mix is asphalt concrete then: (Factor from Bureau of Materials, IDOT)
271244.8 lbs asphalt * (.054)=146361.6 lbs. Asphalt concrete
Assuming that the density of asphalt is similar to that of water, 8.34 lbs/gal, one barrel(42 gal) of asphalt weighs 350 lbs(From Emission Inventory Improvement, Volume III, Chapter 17, Oct. 1998)
146361.6 lbs * (1 barrel/350 lbs) = 418.176 barrels
419 barrels*(9.2 lb VOC/Barrel Asphalt)=3854.8 lbs VOC(emission factor of 9.2 came from Emission Inventory Improvement, Volume III, Chapter 17, Oct. 1998)
3854.8 lbs VOC * (1 Ton/2000 lbs)= 1.93 Ton/VOC per acre of asphalt pavement for one acre parking lot.
Using cutback asphalt, you would have : 18.44 Ton/VOC per acre of asphalt pavement. (Emission factor of 88 lb VOC/Barrel Asphalt came from Emission Inventory Improvement, Volume III, Chapter 17, Oct. 1998)