Occupational Health and Safety Code

The Occupational Health and Safety Code provides specific technical health and safety rules and requirements for Alberta workplaces.

Alberta Regulation 191/2021

Schedule 6 Dimensions of Scaffold Members

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Contents

Table 1 Light duty double pole scaffolds less than 6 metres in height
Table 2 Light duty double pole scaffolds 6 metres or more in height
Table 3 Heavy duty double pole scaffolds less than 6 metres in height
Table 4 Heavy duty double pole scaffolds 6 metres or more in height
Table 5 Half‒horse scaffolds less than 3 metres in height
Table 6 Half‒horse scaffolds 3 metres to 5 metres in height
Table 7 Single‒pole scaffolds less than 6 metres in height
Table 8 Single‒pole scaffolds 6 metres to 9 metres in height
 

Table 1
 Light duty double pole scaffolds less than 6 metres in height

[ See section 333(2) ]

 
Member Dimensions
Uprights 38 millimetres by 89 millimetres
Ledgers 2 — 21 millimetres by 140 millimetres
or
1 — 21 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Braces 21 millimetres by 140 millimetres

 

 

Table 2
 Light duty double pole scaffolds 6 metres or more in height

[ See section 333(2) ]

 
Member Dimensions
Uprights 89 millimetres by 89 millimetres
Ledgers 2 — 21 millimetres by 140 millimetres
or
1 — 21 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Braces 21 millimetres by 140 millimetres

 

 

Table 3
 Heavy duty double pole scaffolds less than 6 metres in height

[ See section 333(2) ]

 
Member Dimensions
Uprights 38 millimetres by 140 millimetres
Ledgers 2 — 21 millimetres by 140 millimetres
or
1 — 38 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Braces 21 millimetres by 140 millimetres

 

 

Table 4
 Heavy duty double pole scaffolds 6 metres or more in height

[ See section 333(2) ]

 
Member Dimensions
Uprights 89 millimetres by 140 millimetres
Ledgers 2 — 21 millimetres by 140 millimetres
or
1 — 38 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Braces 21 millimetres by 140 millimetres

 

 

Table 5
 Half‒horse scaffolds less than 3 metres in height

 
Member Dimensions
Ledgers 38 millimetres by 140 millimetres
Legs 38 millimetres by 89 millimetres
Braces 21 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Leg spread 1 metre

 

 

Table 6
 Half‒horse scaffolds 3 metres to 5 metres in height

 
Member Dimensions
Ledgers 38 millimetres by 140 millimetres
Legs 38 millimetres by 140 millimetres
Braces 21 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Leg spread 1.5 metres

 

 

Table 7
 Single‒pole scaffolds less than 6 metres in height

 
Member Dimensions
Uprights 38 millimetres by 89 millimetres
Ledgers 2 — 21 millimetres by 140 millimetres
or
1 — 21 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Braces 21 millimetres by 140 millimetres
Wall scabs 38 millimetres by 140 millimetres

 

 

Table 8
 Single‒pole scaffolds 6 metres to 9 metres in height

 
Member Dimensions
Uprights 89 millimetres by 89 millimetres
Ledgers 2 — 21 millimetres by 140 millimetres
or
1 — 21 millimetres by 184 millimetres
Ribbons 21 millimetres by 140 millimetres
Braces 21 millimetres by 140 millimetres
Wall scabs 38 millimetres by 140 millimetres