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Detected Outline
Clauses: 6
Tables: 0
Figures: 2
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Tables: 0
Figures: 2
Checklists: 0
1.7.5
Scaffold Tubing Cross Braces for Excavations
Scaffold Tubing Cross Braces for Excavations
1.7.6
When used, excavation screw jacks shall be installed in accordance with
When used, excavation screw jacks shall be installed in accordance with
1.7.7
The top cross brace shall not be more than 0.6 m (2 ft) below the top of the
The top cross brace shall not be more than 0.6 m (2 ft) below the top of the
1.7.9
Materials and spoils shall be set back at least 0.6 m (2 ft) from the edge of
Materials and spoils shall be set back at least 0.6 m (2 ft) from the edge of
1.7.10
Where personnel, equipment or members of the general public are allowed
Where personnel, equipment or members of the general public are allowed
1.8.1
Stairways, ladders, ramps and/or other safe means of egress shall be
Stairways, ladders, ramps and/or other safe means of egress shall be
Page Text
spacing is allowed by Tables 1.7 to 1.9 or SA Standard Drawing AB-
036899. Cross braces shall always be used with stringers (wales).
G. Horizontal spacing of cross braces (e.g., along the length of a trench) shall
not exceed 1.8 m (6 ft), unless a longer horizontal spacing is allowed by
Tables 1.7 to 1.9 or SA Standard Drawing AB-036899). At least two cross
braces (upper and lower) shall be used at each bracing location.
1.7.5 Scaffold Tubing Cross Braces for Excavations
A. Scaffold tubing, with compatible screwjacks and base plates, may be used
as cross braces for excavations not more than 1.2 m (4 ft) wide and not
more than 2.4 m (8 ft) deep. Scaffold tubing shall not be used as stringers
(wales) or uprights .
B. For excavations less than 1.8 m (6 ft) deep, scaffold tubing cross braces
shall be horizontally spaced not more than 1.8 m (6 ft) apart.
C. For excavations between 1.8 m (6 ft) and 2.4 m (8 ft) deep, scaffold tubing
cross braces shall be horizontally spaced not more than 1.2 m (4 ft) apart.
D. Scaffold tubing used as cross braces for shoring shall have at least a 4.0
mm wall thickness and shall be permanently embossed (stamped) before
galvanizing with “BS 1139” or “EN39-4” (Type 4). Refer to Chapter II-2,
Scaffolding, of this manual, for further information.
1.7.6 When used, excavation screw jacks shall be installed in accordance with
Figure 1.11 and the manufacturer’s instructions, including being equally
spaced and properly aligned.
1.7.7 The top cross brace shall not be more than 0.6 m (2 ft) below the top of the
excavation and the lowest cross brace shall not be more than 0.6 m (2 ft)
above the bottom of the excavation.
1.7.8. Steel sheet piling or other comparable material used as shoring shall be
designed by a degreed civil/structural engineer.
1.7.9 Materials and spoils shall be set back at least 0.6 m (2 ft) from the edge of
the excavation (see Figure 1.16).
1.7.10 Where personnel, equipment or members of the general public are allowed
to cross an excavation, a tightly planked bridge or walkway with standard
guardrails shall be provided and kept clear of excavated materials or other
tripping hazards.
1.8.1 Stairways, ladders, ramps and/or other safe means of egress shall be
located in excavations that are 1.2 m (4 ft) or more in depth so as to require
no more than 7.5 m (25 ft) of lateral travel distance for personnel (i.e.,
ladders shall be spaced at least every 15 m [50 ft] along a trench).
036899. Cross braces shall always be used with stringers (wales).
G. Horizontal spacing of cross braces (e.g., along the length of a trench) shall
not exceed 1.8 m (6 ft), unless a longer horizontal spacing is allowed by
Tables 1.7 to 1.9 or SA Standard Drawing AB-036899). At least two cross
braces (upper and lower) shall be used at each bracing location.
1.7.5 Scaffold Tubing Cross Braces for Excavations
A. Scaffold tubing, with compatible screwjacks and base plates, may be used
as cross braces for excavations not more than 1.2 m (4 ft) wide and not
more than 2.4 m (8 ft) deep. Scaffold tubing shall not be used as stringers
(wales) or uprights .
B. For excavations less than 1.8 m (6 ft) deep, scaffold tubing cross braces
shall be horizontally spaced not more than 1.8 m (6 ft) apart.
C. For excavations between 1.8 m (6 ft) and 2.4 m (8 ft) deep, scaffold tubing
cross braces shall be horizontally spaced not more than 1.2 m (4 ft) apart.
D. Scaffold tubing used as cross braces for shoring shall have at least a 4.0
mm wall thickness and shall be permanently embossed (stamped) before
galvanizing with “BS 1139” or “EN39-4” (Type 4). Refer to Chapter II-2,
Scaffolding, of this manual, for further information.
1.7.6 When used, excavation screw jacks shall be installed in accordance with
Figure 1.11 and the manufacturer’s instructions, including being equally
spaced and properly aligned.
1.7.7 The top cross brace shall not be more than 0.6 m (2 ft) below the top of the
excavation and the lowest cross brace shall not be more than 0.6 m (2 ft)
above the bottom of the excavation.
1.7.8. Steel sheet piling or other comparable material used as shoring shall be
designed by a degreed civil/structural engineer.
1.7.9 Materials and spoils shall be set back at least 0.6 m (2 ft) from the edge of
the excavation (see Figure 1.16).
1.7.10 Where personnel, equipment or members of the general public are allowed
to cross an excavation, a tightly planked bridge or walkway with standard
guardrails shall be provided and kept clear of excavated materials or other
tripping hazards.
1.8.1 Stairways, ladders, ramps and/or other safe means of egress shall be
located in excavations that are 1.2 m (4 ft) or more in depth so as to require
no more than 7.5 m (25 ft) of lateral travel distance for personnel (i.e.,
ladders shall be spaced at least every 15 m [50 ft] along a trench).