72 — C
ONSTRUCTION
M
ASTER
®
P
RO
/ T
RIG
/ D
ESKTOP
Stairs —
Given Only Floor-to-Floor Rise
You’re building a stairway with a total rise of 9 Feet 11 Inches. 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 thick-
ness 10 Inches*. Find all stair values, then calculate the run.
*Headroom and floor thickness are required to calculate the length of the stairwell
opening.
KEYSTROKE DISPLAY
1. Enter known Rise:
o o 0.
9 f 1 1 i r RISE 9 FEET 11 INCH
2. Recall stored desired stair riser height:
® 7 R-HT 7-1/2 INCH
3. Recall stored desired stair tread width:
® 9 T-WD 10 INCH
4. Recall stored desired floor thickness:
® 8 FLOR 10 INCH
5. Display stored Headroom (via Preference Setting Mode):
Ç ß ß ß ß HDRM 6 FEET 8 INCH
6. Find riser height, number of risers, riser underage/overage, tread
width, number of treads, tread overage/underage, length of stairwell
opening, stringer length and angle of incline. As a final step, calcu-
late the run.
s R-HT 7-7/16 INCH
s RSRS 16.
s R+/– 0 INCH
s T-WD 10 INCH
s TRDS 15.
s T+/– 0 INCH
s OPEN 10 FEET 1 INCH
s STRG 15 FEET 6-15/16 INCH
s INCL 36.64°
s RUN 12 FEET 6 INCH
s* RISE 9 FEET 11 INCH
*Continuous presses of
s
will also recall stored desired riser height, tread, head-
room and floor thickness values.
STORED
STORED
STORED
STORED
STORED
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