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Safe Working Load (kN) for SCP props loaded Concentrically and Suitably Laced with Tube and Fittings
Recommended safe working loads for props laced in two directions, at right angles, at a level 1/3 of the height of the extended inner tube (see sketch). The lacing and form work deck must be restrained against horizontal movement by tying to the building or by diagonal bracing.
When using the loading tables, the height of any drop head or similar attachment should be included in the prop height.
| Prop Size |
Height (m) |
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2.0 |
2.25 |
2.5 |
2.75 |
3.0 |
3.25 |
3.5 |
3.75 |
4.0 |
4.25 |
4.5 |
4.75 |
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| 1,2,3 |
- |
- |
32 |
32 |
32 |
32 |
28 |
24 |
20 |
- |
- |
- |
| 4 |
- |
- |
- |
- |
- |
32 |
32 |
30 |
26 |
22 |
19 |
16 |
Source: calculated in accordance with BS449: Part 2: 1969, but using a load factor of 2.
N.B For all practical purposes, to convert kN to tons or metric tones divide by 10.
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