METRIC
 
  Most economical joist
xx.x  : Estimated Linear Weight (kg/m)
xx.x  : Load to produce a deflection of L/360 (kN/m)
x.xx  : Price factor based on the economical depth (1.0 is the most economical)
Span
(m)
Joist Depth
(mm)
Factored Load (kN/m)
4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 19.5 21.0 22.5
3
200 9.0
6.0
1.03
9.0
7.7
1.03
9.0
7.7
1.03
9.0
7.7
1.01
9.3
9.6
1.01
9.3
9.6
1.01
9.7
10.1
1.02
9.7
10.1
1.02
9.7
10.1
1.01
9.8
10.3
1.03
10.1
10.5
1.03
10.4
10.9
1.05
12.0
12.9
1.09
250 9.1
6.0
1.03
9.1
8.0
1.03
9.1
10.0
1.03
9.1
11.5
1.01
9.5
14.0
1.02
9.5
14.1
1.02
9.9
15.0
1.02
9.9
15.0
1.02
9.9
15.0
1.01
9.9
15.0
1.01
10.3
15.7
1.02
10.3
15.7
1.02
10.3
15.7
1.03
300 9.0
6.0
1.00
9.0
8.0
1.00
9.0
10.0
1.00
9.6
12.0
1.00
9.6
14.0
1.00
9.6
16.0
1.00
9.8
18.0
1.00
9.8
19.9
1.00
10.1
20.2
1.00
10.1
20.3
1.00
10.2
21.3
1.00
10.2
21.3
1.00
10.2
21.3
1.00
350 9.1
6.0
1.00
9.1
8.0
1.00
9.1
10.0
1.00
9.8
12.0
1.03
10.0
14.0
1.01
10.0
16.0
1.01
10.0
18.0
1.00
10.0
20.0
1.00
10.5
22.0
1.01
10.5
24.0
1.01
10.5
26.0
1.00
10.5
27.3
1.00
11.0
28.9
1.01
400 12.7
6.0
1.25
12.7
8.0
1.25
12.7
10.0
1.25
12.7
12.0
1.22
12.7
14.0
1.19
12.7
16.0
1.19
12.7
18.0
1.19
12.7
20.0
1.19
12.7
22.0
1.17
12.7
24.0
1.17
12.7
26.0
1.16
12.7
28.0
1.17
12.7
30.0
1.16
450 12.9
6.0
1.26
12.9
8.0
1.26
12.9
10.0
1.26
12.9
12.0
1.23
12.9
14.0
1.20
12.9
16.0
1.20
12.9
18.0
1.19
12.9
20.0
1.19
12.9
22.0
1.18
12.9
24.0
1.18
12.9
26.0
1.17
12.9
28.0
1.17
12.9
30.0
1.16
500 13.1
6.0
1.26
13.1
8.0
1.26
13.1
10.0
1.26
13.1
12.0
1.23
13.1
14.0
1.20
13.1
16.0
1.20
13.1
18.0
1.20
13.1
20.0
1.20
13.1
22.0
1.18
13.1
24.0
1.18
13.1
26.0
1.17
13.1
28.0
1.17
13.1
30.0
1.16