Calculated Industries 4045-B User Manual
Page 26

26 — Construction Master IV
Roof Covering —
No. of Shingles
You’re going to use 12 inch wide by 36-
inch long asphalt (strip) shingles with
5-inch weather exposure. How many
shingles are required for a 1745 square
foot roof? (Note: Shingle exposure
area = Exposure x length, and Number
of Shingles = Roof area ÷ shingle ex-
posure area.)
Keystroke Display
1. Find and save shingle exposure
area
[On/C] [On/C]
0.
5 [Inch] [x] 36 [Inch] [=]
180 SQ IN
[M+]
180 SQ IN
2. Find Total Shingles Required
1745 [Sq] [Feet]
1745 SQ FT
[÷] [Rcl] [Rcl] [=]
1396 (shingles)
3. Add 10% for waste
[+] 10 [%]
1535.6 (1536 shingles)
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