Calculated Industries 4065 v3.0 User Manual
Page 81
80 — C
ONSTRUCTION
M
ASTER
®
P
RO
/ T
RIG
/ D
ESKTOP
Stairs —
Given Only the Run
You’re building a stairway with a total run of 20 feet. Your desired
riser height is 7-1/2 inches and desired tread width is 10 inches. The
desired headroom is 6 feet 8 inches and floor thickness 10 inches.
Find all stair values, then calculate the rise.
KEYSTROKE
DISPLAY
1. Enter run:
o o
0.
2 0 f R
RUN 20
FEET
0
INCH
2. Find riser height, number of risers, riser underage/overage, tread
width, number of treads, tread overage/underage, stairwell opening,
stringer length and angle of incline. As a final step, calculate the rise.
s
R-HT 7-1/2
INCH
s
RSRS 25.
s
R+/– 0
INCH
s
T-WD 10
INCH
s
TRDS 24.
s
T+/– 0
INCH
s
OPEN 10
FEET
0
INCH
s
STRG 25
FEET
0
INCH
s
INCL 36.87°
s
STORED RUN 20
FEET
0
INCH
s
RISE 15
FEET
7-1/2
INCH
4065UG-E-B 6/9/04 1:50 PM Page 80