Desired Riser Height. Calculated Industries 4050 v3.1, Construction Master 5, 4050, Construction Master III
The Calculated Industries 4050 is an advanced feet-inch-fraction calculator that can solve complex dimensional problems, calculate stair layouts, handle roofing materials, do circle/arc calculations, and more. It features a large display, user-friendly interface, and a variety of functions to help you save time and work more accurately on your projects.
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Stairs — Given Only the Floor-to-Floor
Rise; Entering Other Than 7-1/2 Inch
Desired Riser Height
Find stair values if the Floor-to-Floor Rise is 12 Feet 6 Inches, and the desired Riser
Height is 8 Inches:
KEYSTROKE DISPLAY
1. Enter desired Riser Height and Floor-to-
Floor Rise: o o
8 i Ç 7 R-HT
1 2 f 6 i r
STORED
8
0.
INCH
RISE 12
FEET
6
INCH
2. Calculate stair values: s s s s s s s s s s s s
STRG 19
RISE
RUN 15
RSRS 19.
R+/– – 0-3/8
T-WD
STORED
R-HT 7-7/8
R-HT
T-WD
STORED
FEET
STORED
10
INCH
TRDS 18.
T+/– 0
FEET
1-1/8
0
10
INCH
INCH
INCH
INCH
INCL 38.22°
INCH
*
12
FEET
6
INCH
STORED
8
INCH
INCH
*Note: Run is calculated based on Tread values, as it was not entered. The Total Run of a stairway is equal to the width of each Tread multiplied by the number of Treads.
P
OCKET
R
EFERENCE
G
UIDE
— 37
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