The strength and stiffness of nailed timber joints / C. D. J. Lisboa.

Tese (Ph.D.) - University of London, 1978

This thesis is concerned with the strength of nailed timber joints in which the nails are subjected to lateral loads, withdrawal loads or a combination of the two. The nails under consideration are the common wire nails, commonly used in timber construction, joining pieces of solid wood, although other conditions of nails and members joined are also touched upon. The main objetive of this thesis was to collect and arrange the important research works undertaken in different parts of the world, covering the strength of nailed timber joints and the factors that affect their strength in order to compare critically and verify. The main part of the review is presented in two sections separately for withdrawal and lateral resistance of nailed-timber joints and more than 400 references are given. The dependence of joint strangth and stiffness of several variables is examined through a complete description of the experimental works, extensive comparative tables and detailed discussions of the results obtaines by the different authors for a wide range of nail sizes, environment conditions and wood specific gravity, including softwoods and hardwoods species of timbers, whose common and botanical names are given in Appendix 1. It has shown the results which can safely and economically be used and those in which more information is required. This thesis also discussed the various procedures for deriving design loads adopted by a number of codes of buiding practice, and indicates some possible ways of narrowing the wide variation in results found between them through its conclusions and suggestions.