Cubis stakkabox 설치 매뉴얼 - 페이지 6

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INSTALLATION PROCEDURE

Bracing

10. On certain chambers cross bracing is required. See

Table 1 for details.

10.1. If timber bracing is required this should be

supplied with the chamber. Make sure that the bracing

is vertical and plumb and located in the correct position.

10.2. On larger chambers "Acrow" props are used as

bracing.

These are not supplied by CUBIS. Timber footplates

should be used to disperse the loads evenly over the

chamber. See Table 1 for spacing details.

Backfilling

11. With the chamber installed to its finished depth, duct entries formed, furniture fitted and if required suitable bracing installed, the backfill

surround of the chamber can now take place. Backfilling is formed in layers and should be completed to the top of the chamber, or in the

case of a roadway construction to the underside of the blacktop construction. Refer to Table 1 for the recommended backfill material and

required width of material.

Refer to "Specification for the Reinstatement of Openings in Highways - Appendix A8" for the depth of layers and number of

passes required for the selected material and compaction method.

11.1. If timber bracing is being used, this should be raised along with the backfilling to ensure that there is adequate support for the chamber

wall section that is being compacted against.

11.2. If Acrow props are required these can be left in position until the backfill and compaction are completed and the material has adequately

cured.