needling


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needling

[′nēd·əl·iŋ]
(civil engineering)
Underpinning the upper part of a building with horizontally placed timber or steel beams.
(mining engineering)
Cutting holes or ledges in a coal bed or rock surface for receiving the ends of timber supports.

needling

1. Attaching a base coat of thatch onto the battens of a thatched roof; by sewing them together with a large, flat metal needle.
2. A needle beam which provides temporary support of a load.
References in periodicals archive ?
Again there is a significant difference between the two needling modes and the effects of increased weight are much less pronounced with elliptical needling.
Elliptical needling produces little change as penetration increases, compensating for increased dwell time.
Figure 6 illustrates the dramatic difference between vertical and elliptical needling in this situation.