Quick Reference Values
Maximum allowable moisture content15%
Dimensional tolerance on length±2 mm
Maximum permissible slope of grain1 in 15
Practical Notes
Always ensure the timber is free from center heart, fungal decay, and major knots to prevent the pins from snapping under tension or impact.
Proper preservative treatment as per IS 401 is essential since the pins are driven into the ground and exposed to soil moisture and termites.
Avoid timber with severe cross-grain, as it is highly prone to splitting when struck with a mallet.