Info

Certain sizes may not be obtainable in the customary range of species and grades that are generally available. BS EN 336 has a lower limit of 24 mm. However, as thinner material is used in the United Kingdom the customary sizes of such material are also listed here. x applies only to sections with sawn width or thickness.

*In accordance with Tables NA.2, NA.3 and NA.4 of BS EN 336:2003; for (i) sawn to tolerance class 1, (ii) machined on the width to tolerance class 2, (iii) machined on all four sides to tolerance class 2.

Certain sizes may not be obtainable in the customary range of species and grades that are generally available. BS EN 336 has a lower limit of 24 mm. However, as thinner material is used in the United Kingdom the customary sizes of such material are also listed here. x applies only to sections with sawn width or thickness.

*In accordance with Tables NA.2, NA.3 and NA.4 of BS EN 336:2003; for (i) sawn to tolerance class 1, (ii) machined on the width to tolerance class 2, (iii) machined on all four sides to tolerance class 2.

• chipped, to different sizes, to produce fibreboards, chipboards or oriented strand board (OSB); and

• sliced in different forms to produce parallel strand lumber (PSL) known as Parallam® or laminated strand lumber (LSL) known as TimberStrand®.

These products are engineered and tested to predetermined design specifications to meet national or international standards.

EWPs may also include products that are made by bonding or mechanically fixing together two or more of the above products to form structurally efficient composite members or systems such as I-beams and box beams or in combination with other

Table 1.5 Customary lengths of structural timber*

Length (m)

0 0

Post a comment