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Job Breakdown Sheets
Breakdown No. 19
Forepoling
1: Remove covering material.
2: Slide the girders through the clamps.
3: Secure the roof.
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Examine the roof to ensure that it is safe.
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| (b) |
Remove covering material from above the girders.
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Remove the wedges holding the girders in position.
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| (d) |
Remove rear clamps and replace them on the roadway supports nearest the ripping in line with the other clamps.
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2: Slide the girders through the clamps.
| (a) |
Slide girders forward through the clamps, until the ends of the girders touch the face of the ripping.
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| (b) |
Wedge the girders in the clamps.
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| (a) |
Build up covering materials on top of the forepoling girders.
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| (b) |
Wedge material tight against the roof.
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