METRIC DESIGN GUIDE
Structural/Floorload
Calculations are in kPa, but floorloading can be in kilograms (kg) per square meter
because many dead and live loads are given in kg.
The following chart gives kPa strength ratings that can be used to replace the psf
strength rating and not imply a greater accuracy:
Previous
New
Percent
Stronger
(psf)
(kPa)
50
2.5
4.4
80
4
1.8*
100
5
4.4
120
6
4.4
150
7.5
4.4
200
10
4.4
250
12
0.2
300
15
4.4
350
17
1.4
400
20
4.4
450
22
2.1
500
24
0.2
*GSA office floor standard, PBS-PQ100.1.
Page 21
PBS-PQ260
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