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

Contents

 

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