This book is intended for a wide audience - including carpenters, architects and structural engineers who deal with the repair and restoration of historic timber structures - and takes a practical approach. It deals with two types of structure: the oak frames of buildings dating from the middle ages, which still survive in some numbers, and the timber elements of masonry buildings from the late seventeenth century.As well as the forces on the wall plate, the effect of purlin deflection on bending in the rafters also needs to be considered. ... deflection of the purlin can result in a fourfold increase in the moment on the rafter, and from hogging to sagging.
|Title||:||The Repair of Historic Timber Structures|
|Author||:||David T. Yeomans|
|Publisher||:||Thomas Telford - 2003-01-01|