Unless otherwise specified, sawntimber for carpentry works shall be of Standard Structural Grade for structural work and of Sound Grade for GMS (General Market Specifications) and Strips and Serviceable Grade for Scantling. Grading shall be carried out in accordance with the Malaysian Grading Rules by timber graders registered with the Malaysian Timber Industry Board. Timber for carpentry shall be bare-sawn. The sizes of sawn timber, unless otherwise specified, shall be within the margin of permissible variations stated hereunder:

• For widths, depths or thicknesses not exceeding 75 mm, within 5 mm of the specified size.
• For widths, depths or thicknesses exceeding 75mm, within 10 mm of the specified size.

The Contractor shall provide at his own costs any necessary blocks, wedges or battens to compensate for irregular surfaces caused by any variations in size of timbers hereby permitted. 

Unless otherwise specified, sawntimber for joinery works shall be of Sound Grade (GMS and Strips) and Serviceable Grade (Scantlings). Timber for joinery shall be bare-sawn. The finished sizes for joinery (including wrot timber), unless otherwise specified, shall be within the margin of permissible variation stated hereunder:

• For widths, within 3 mm of the specified finished size.
• For thicknesses, within 2 mm of the specified finished size.