STRUCTURAL DESIGN FOR ARCHITECTURE

Structural Design for Architecture 6.4.4 Mechanical properties 6.4.4.1 Introduction Due to the fibrous nature of the material an ...

Timber structures 195 Table 6.1 Grade stresses for softwood timbers (after BS 5268) ...

Structural Design for Architecture The allowable stress which is used in the design of a timber element is the grade stress mult ...

Timber structures known as the 'appearance' or 'defect' system of grading in which limits are set for the sizes and frequency of ...

Table 6.4 Basic sawn sizes of softwood (from BS 4471 Part 1: 1978) Thickness (mm) Width (mm) 75 100 125 150 175 200 225 250 300 ...

Table 6.6 Geometrical properties of sawn softwoods Timber structures 199 ...

Structural Design for Architecture Where a high quality of finish is required, timber elements are planed on all four sides (pla ...

Timber structures Fig. 6.20 Tongued-and- grooved decking elements are used here in conjunction with laminated timber frames. The ...

Structural Design for Architecture 202 composite construction. It is ideal for shear panels such as the webs of built-up-beams ( ...

means of finger joints (Fig. 6.23). The laminat- ing process also allows the construction of elements which have a curved profil ...

Structural Design for Architecture 204 Fig. 6.24 St loseph's Chapel, Ipswich, J. Powlesland, structural engineer. The timber roo ...

Timber structures Fig. 6.25 Plyweb beams are built-up- beams with sawn- timber flanges and plywood webs. Composite elements such ...

Structural Design for Architecture forms of roof construction, from which they derive their name, but they allow a much more eco ...

due to the infrequent spacing of the primary structural elements. So far as the overall geometry of trusses is concerned, any sh ...

Fig. 6.29 Traditional forms of semi-truss such as these are not fully triangulated and depend on continuity of the sub-elements ...

(a) (b) (c) (d) Timber structures 209 Fig. 6.31 Timber connectors. These components are used in conjunction with bolts to make l ...

Structural Design for Architecture Fig. 6.33 Detail of large one-off timber truss. 6.6.6 Joints 6.6.6.1 Introduction Joints in s ...

Timber structures (a) (b) (c) Fig. 6.3 6 The three principal types of fastening com- ponent which are used in timber engineering ...

Structural Design for Architecture Fig. 6.37 Toothed-plate and shear-plate connectors are available in single- and double-sided ...

Fig. 6.38 Punched-metal- plate fasteners, which form combined nail-and-gusset plate units, are used as the fastening elements in ...