Author: Milner Associates (on behalf of the Structural Timber Association)
28 November 2013
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Milner Associates (on behalf of the Structural Timber Association)
This Technical Guidance Note concerns the design of pile-caps for small groups of piles e.g. 2-4 piles. It relies on the strut and tie method to determine the amount of reinforcement required in the pile-cap; which is dependent upon the depth of the cap, the magnitude of the axial load being placed upon it, the cap’s concrete strength and the pile size and spacing.
Standard deductions are applied to the dimensions of bent bars between concrete faces to improve the confidence of minimum covers being achieved and to improve fit. The introduction of new sets of permitted deviations and the supersession of BS 8110 has led to the need to reconsider these deductions and ultimately to propose a new set, consistent with current Execution Standards.
This article introduces the composition and terminology used for platform frame building structures and describes the structural engineering checks required to verify the adequacy of the virtual load paths and the strength and stiffness of the individual framing members.