Calculated Industries 44060 - Manual (Page 83)

User's Guide — 81
Roof Covering — Number of Shingles
You’re going to use 12-inch wide by 36-inch long asphalt (strip) shin-
gles with 5-inch weather exposure. How many shingles are required for
a roof measuring 1,745 square feet? Add a 10% waste allowance.
ю ю
Note: Shingle Exposure Area = exposure x length, plus Number
of Shingles = roof area ÷ shingle exposure area.
Keystroke Display
1. Find and save Shingle Exposure Area:
[On/C] [On/C] 0.
5 [Inch] [x] 36 [Inch] [=] 180. SQ INCH
[M+]
180. SQ INCH
M
2. Find total Number of Shingles:
1745 [Feet] [Feet] 1745. SQ FEET
M
[÷] [Rcl] [M+] [=] 1396. (shingles) M
3. Add 10% for waste:
[+] 10 [%]
1535.6 (1536 shingles)
M
4. Clear memory and display:
[Rcl] [Rcl] [On/C] 0.