Stairs
Metric
Stairs
English
Roof
Metric
Roof
English
Gazebo
Calculator
Baluster
Spacings
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Total Rise
Feet
1'
2'
3'
4'
5'
6'
7'
8'
9'
10'
11'
12'
13'
14'
15'
16'
17'
18'
19'
20'
21'
22'
23'
24'
25'
26'
27'
28'
29'
30'
Inches
_
1"
2"
3"
4"
5"
6"
7"
8"
9"
10"
11"
Fraction
_
1/32
1/16
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
13/32
7/16
15/32
1/2
17/32
9/16
19/32
5/8
21/32
11/16
23/32
3/4
25/32
13/16
27/32
7/8
29/32
15/16
31/32
Ideal Rise
5"
5~1/2"
6"
6~1/2"
7"
7~1/2"
8"
8~1/2"
9"
9~1/2"
10"
Show Nosing
Show Stringer
Restrict
Calculate Run
Use Ideal Run
Use Total Run
Calc by Angle
Calculated at
Run = 2'1/2" - (rise * 2)
Angle
30
31
32
33
34
35
36
37
38
39
40
Ideal Run
8"
8~1/4"
8~1/2"
8~3/4"
9"
9~1/4"
9~1/2"
9~3/4"
10"
10~1/4"
10~1/2"
10~3/4"
11"
11~1/4"
11~1/2"
11~3/4"
12"
12~1/4"
12~1/2"
12~1/4"
13"
13~1/4"
13~1/2"
13~3/4"
14"
14~1/4"
14~1/2
14~3/4"
15"
Total Run
Feet
1'
2'
3'
4'
5'
6'
7'
8'
9'
10'
11'
12'
13'
14'
15'
16'
17'
18'
19'
20'
21'
22'
23'
24'
25'
26'
27'
28'
29'
30'
Inches
_
1"
2"
3"
4"
5"
6"
7"
8"
9"
10"
11"
Frac
_
1/32
1/16
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
13/32
7/16
15/32
1/2
17/32
9/16
19/32
5/8
21/32
11/16
23/32
3/4
25/32
13/16
27/32
7/8
29/32
15/16
31/32
(Keep Total Run)
Possible Rises
12 of 8~11/32"
13 of 7~11/16"
14 of 7~5/32"
15 of 6~21/32"
16 of 6~1/4"
17 of 5~7/8"
18 of 5~9/16"
19 of 5~1/4"
20 of 5"
Stringer Width
4"
5"
6"
7"
8"
9"
10"
11"
12"
13"
14"
15"
16"
17"
18"
19"
20"
21"
22"
23"
24"
25"
26"
27"
28"
29"
30"
_
1/32
1/16
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
13/32
7/16
15/32
1/2
17/32
9/16
19/32
5/8
21/32
11/16
23/32
3/4
25/32
13/16
27/32
7/8
29/32
15/16
31/32
Concrete Thick
3"
3~1/4"
3~1/2"
3~3/4"
4"
4~1/4"
4~1/2"
4~3/4"
5"
5~1/4"
5~1/2"
5~3/4"
6"
6~1/4"
6~1/2"
6~3/4"
7"
7~1/4"
7~1/2"
7~3/4"
8"
8~1/4"
8~1/2"
8~3/4"
9"
9~1/4"
9~1/2"
9~3/4"
10"
Stair Width
2'
3'
4'
5'
6'
7'
8'
9'
10'
11'
12'
13'
14'
15'
16'
17'
18'
19'
20'
21'
22'
23'
24'
25'
26'
27'
28'
29'
30'
_
1"
2"
3"
4"
5"
6"
7"
8"
9"
10"
11"
_
1/32
1/16
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
13/32
7/16
15/32
1/2
17/32
9/16
19/32
5/8
21/32
11/16
23/32
3/4
25/32
13/16
27/32
7/8
29/32
15/16
31/32
Show Headroom
Total rise must be
greater than headroom
Headroom
3'
4'
5'
6'
7'
8'
9'
10'
11'
12'
_
1"
2"
3"
4"
5"
6"
7"
8"
9"
10"
11"
_
1/32
1/16
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
13/32
7/16
15/32
1/2
17/32
9/16
19/32
5/8
21/32
11/16
23/32
3/4
25/32
13/16
27/32
7/8
29/32
15/16
31/32
Floor Thickness
_
1"
2"
3"
4"
5"
6"
7"
8"
9"
10"
11"
12"
13"
14"
15"
16"
17"
18"
19"
20"
21"
22"
23"
24"
25"
26"
_
1/32
1/16
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
13/32
7/16
15/32
1/2
17/32
9/16
19/32
5/8
21/32
11/16
23/32
3/4
25/32
13/16
27/32
7/8
29/32
15/16
31/32
Total Rise 8'4"
13 Runs of 10"
14 Rises of 7~5/32"
Stringer Run (
top of treads) -> 1'9/32", 2'9/16", 3'7/8", 4'1~5/32", 5'1~7/16", 6'1~23/32", 7'2~1/32", 8'2~5/16", 9'2~19/32", 10'2~7/8", 11'3~3/16", 12'3~15/32", 13'3~3/4", 14'4~1/32"
Concrete Volume 1.27 y³
The stairs have a total run of
10'10"
and total rise of
8'4"
, with
14
rises of
7~5/32"
. The angle is
35.5
°, the Stringer is
14'4~1/32"
long and
10~13/16"
wide. With a thickness of
5"
, and stair width of
4'
, the concrete volume is
1.27
y³.
The void volume (under the stairs) is
5.41
y³.
The Base of the stairs has a total run of
10'1~13/32"
and rise of
7'2~23/32"
The base length (on the angle) is
12'5~3/16"
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