Calculated Industries 8545 - Manual (Page 25)

Divide by on- [÷] 16 [Inch]
center spacing [=] 13.96875 (studs)
Add first stud [+] 1 [=]
14.96875 (round to 15)
Roof Covering — Shingles
You’re going to use 12” wide by 36”
long asphalt (strip) shingles with 5”
weather exposure. How many shingles
are required for a 1745 sq. ft. roof?
(Shingle exposure area = exposure x
length, and number of shingles = roof
area ÷ shingle exposure area)
Steps Keystrokes Display
Clear calculator [On/C] [On/C] 0.
Find shingle 5 [Inch] [x]
exposure area 36 [Inch] [=] 180
SQ INCH
Store in memory [M+]
M
180
SQ INCH
Enter surface area 1745 [Sq] [Feet] 1745
SQ FEET
Divide by [÷] [Rcl] [Rcl] [=]
shingle area 1396 (shingles)
Add 10% waste [+] 10 [%]
1535.6 (1536 shingles)
User’s Guide – 25