FOAM AND MEMBRANE LOAD CALCULATION FORMULAS

  STEP ONE = MULTIPLY THE ROOF SQUARE FEET BY THE THICKNESS OF THE FOAM IN INCHES

STEP TWO = DIVIDE BY 12 TO GET CUBIC FEET OF FOAM

STEP THREE = DIVIDE BY 27 TO GET CUBIC YARDS OF FOAM

STEP FOUR = MULTIPLY BY 0.70 TO GET THE TYPICAL YIELD OF CUBIC YARDS OF FOAM

STEP FIVE = DIVIDE BY 114 TO GET THE NUMBER OF FLAT BED LOADS

STEP SIX = ROUND UP TO A WHOLE NUMBER TO GET THE FINAL NUMBER OF LOADS

 STEP ONE = MULTIPLY THE ROOF SQUARE FEET BY THE THICKNESS OF THE FOAM IN INCHES

STEP TWO = DIVIDE BY 12 TO GET CUBIC FEET OF FOAM

STEP THREE = DIVIDE BY 27 TO GET CUBIC YARDS OF FOAM

STEP FOUR = MULTIPLY BY 0.70 TO GET THE TYPICAL YIELD OF CUBIC YARDS OF FOAM

STEP FIVE = DIVIDE BY 114 TO GET THE NUMBER OF FLAT BED LOADS

STEP SIX = ROUND UP TO A WHOLE NUMBER TO GET THE FINAL NUMBER OF LOADS

 STEP ONE = MULTIPLY THE ROOF SQUARE FEET BY THE THICKNESS OF THE FOAM IN INCHES

STEP TWO = DIVIDE BY 12 TO GET CUBIC FEET OF FOAM

STEP THREE = DIVIDE BY 27 TO GET CUBIC YARDS OF FOAM

STEP FOUR = MULTIPLY BY 0.75 TO GET THE TYPICAL YIELD OF CUBIC YARDS OF FOAM

STEP FIVE = DIVIDE BY 114 TO GET THE NUMBER OF FLAT BED LOADS

STEP SIX = ROUND UP TO A WHOLE NUMBER TO GET THE FINAL NUMBER OF LOADS

 IF THE EPDM MEMBRANE IS .045" THICK USE 0.29 POUNDS PER SQUARE FOOT IN FORMULA BELOW

IF THE EPDM MEMBRANE IS .060" THICK USE 0.38 POUNDS PER SQUARE FOOT IN FORMULA BELOW

IF THE EPDM MEMBRANE IS .090" THICK USE 0.58 POUNDS PER SQUARE FOOT IN FORMULA BELOW

LOADS OF EPDM MEMBRANE =

STEP ONE = MULTIPLY THE ROOF SQUARE FEET BY THE POUNDS PER SQUARE FOOT FROM ABOVE

STEP TWO = MULTIPLY BY 0.90 TO GET THE TYPICAL YIELD

STEP THREE = DIVIDE BY 30,000 TO GET THE NUMBER OF FLAT BED LOADS

STEP FOUR = ROUND UP TO A WHOLE NUMBER TO GET THE FINAL NUMBER OF LOADS

 IF THE PVC MEMBRANE IS .050" THICK USE 0.29 POUNDS PER SQUARE FOOT IN FORMULA BELOW

IF THE PVC MEMBRANE IS .060" THICK USE 0.32 POUNDS PER SQUARE FOOT IN FORMULA BELOW

LOADS OF PVC MEMBRANE =

STEP ONE = MULTIPLY THE ROOF SQUARE FEET BY THE POUNDS PER SQUARE FOOT FROM ABOVE

STEP TWO = MULTIPLY BY 0.90 TO GET THE TYPICAL YIELD

STEP THREE = DIVIDE BY 30,000 TO GET THE NUMBER OF FLAT BED LOADS

STEP FOUR = ROUND UP TO A WHOLE NUMBER TO GET THE FINAL NUMBER OF LOADS

IF THE TPO MEMBRANE IS .045" THICK USE 0.26 POUNDS PER SQUARE FOOT IN FORMULA BELOW

IF THE TPO MEMBRANE IS .060" THICK USE 0.32 POUNDS PER SQUARE FOOT IN FORMULA BELOW

LOADS OF TPO MEMBRANE = 

STEP ONE = MULTIPLY THE ROOF SQUARE FEET BY THE POUNDS PER SQUARE FOOT FROM ABOVE

STEP TWO = MULTIPLY BY 0.90 TO GET THE TYPICAL YIELD

STEP THREE = DIVIDE BY 30,000 TO GET THE NUMBER OF FLAT BED LOADS

STEP FOUR = ROUND UP TO A WHOLE NUMBER TO GET THE FINAL NUMBER OF LOADS