Manual

76 — C

ONSTRUCTION

ASTER

/ T

RIG

/ D

ESKTOP

Stairs —

Given Rise and Run, Using “Riser Limited” Function

for Code Restrictions

Your local code prohibits risers greater than 7-1/2 Inches. You need

to build a stairway with a floor-to-floor height of 10 Feet 1 Inch, a run

of 15 Feet 5 Inches. Calculate all stair values. Use the “Riser

Limited” function (second function of the s key) to calculate a

riser height that does not exceed the stored Desired Riser Height of

7-1/2 Inches.

KEYSTROKE DISPLAY

1. Enter Rise and Run:

o o 0.

1 0 f 1 i r RISE 10 FEET 1 INCH

1 5 f 5 i R RUN 15 FEET 5 INCH

2. Find stair values using “Riser Limited”:

Ç s

(Riser Limited)

R-HT 7-1/8 INCH

s RSRS 17.

s R+/– 1/8 INCH

s T-WD 11-9/16 INCH

s TRDS 16.

s T+/– 0 INCH

s OPEN 12 FEET 2-1/16 INCH

s STRG 18 FEET 1-5/16 INCH

s INCL 31.64°

s RUN 15 FEET 5 INCH

s RISE 10 FEET 1 INCH

s R-HT 7-1/2 INCH

s T-WD 10 INCH

s HDRM 6 FEET 8 INCH

s FLOR 10 INCH

STORED