Permitted centre-to-centre distances
|
Guard-rail boards |
Perm. centre-to-centre distance 'a' |
||
|---|---|---|---|
|
Width 'w' |
Height 'h' |
Up to 40 m |
40 to 100 m |
|
3 cm |
15 cm |
2.00 m |
1.80 m |
|
4 cm |
15 cm |
2.20 m |
1.80 m |
|
3, 4, 5 cm |
20 cm |
2.00 m |
1.30 m |
|
Scaffold tube 48.3mm |
3.00 m |
3.00 m |
|
q ... Dynamic pressure
The smaller permitted centre-to-centre distance when 20 cm high guard-rail boards are used is due to the higher wind loads which are exerted upon the Guard rail 1.10m.
.