8/18/2019 grt nty

1/2

SCOT 9209-521STRUCTURAL DESIGN OF TIMBER

STRUCTURAL DESIGN OF TIMBER

(BS 5268)

Timber is a structural material used in construction such as steel, concrete

masonry etc. Timber was widely used in early days because of its availability &

economy. But nowadays timber seems to be losing its hold because of outcome

of new alternative materials. There are number of advantages of timber that

make it a suitable structural material.

1) Work with timber is easy since the joints can be easily made with simle

tools.

!) Timber has a high strength to weight ratio & reasonable strength in both

tension & comression.

  "

"

#) $eavy timber constructions are good enough for fire resistance.

%) n favourable conditions timber is durable.

Types of Timber & Strengt C!"sses

  is stiulated two tyes of timber namely softwoods & hardwoods.

Timber is classified into above two tyes according to the strength of the timber.

'oftwoods are less strong, less durable, cheaer & easily treated. $ardwoods

are stronger, more durable & more e(ensive. ode mentioned the softwood

strength classes as , , , , , & & hardwood strength

classes as , , & . * +eneral 'tructural, 'ecial

'tructural)

Timber Members

ADVANCED DIPLOMA Page # of $ ENG. S A B !AASING"E

8/18/2019 grt nty

2/2

SCOT 9209-521STRUCTURAL DESIGN OF TIMBER

Basically timber are used in construction for fle(ural members such as timber 

 beams, floors for comression members such as timber columns, struts in

timber trusses & for tension members such as ties in timber trusses.

ADVANCED DIPLOMA Page $ of $ ENG. S A B !AASING"E