User Manual

78 — C

ONSTRUCTION

ASTER

/ 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 thickness

10 inches*. Find all stair values, then calculate the run.

*Note: Headroom and floor thickness are required to calculate the length of the stair-

well 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 STORED 7-1/2 INCH

3. Recall stored desired stair tread width:

® 9 T-WD STORED 10 INCH

4. Recall stored desired floor thickness:

® 8 FLOR STORED 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 STORED 9 FEET 11 INCH

*Continuous presses of

will also recall stored desired riser height, tread, head-

room and floor thickness values.

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