What is the primary objective of this guide?

To provide guidelines for storing and protecting logs and sawn timber from fire, biological attack (insects, fungi), and physical deterioration.

What is the recommended clearance between timber stacks?

A minimum of 6 meters is recommended between adjacent stacks to act as a fire break and allow for access (Clause 5.4.1).

Why must timber be stacked on foundations?

To keep it off the damp ground, preventing moisture absorption and subsequent fungal decay, and to deter insect attack (Clause 3.1.2).

What fire protection measures are recommended?

Maintaining clear zones, providing adequate water supply and hydrants, installing fire extinguishers, and ensuring good housekeeping (Clause 5).

IS 9104

: 1979

Guide for storage and protection of logs and sawn timber

CurrentSpecializedGuidelinesBIMMaterials Science · Timber and Timber Stores

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This standard provides guidance on the appropriate methods for storing logs and sawn timber to protect them from degradation. It covers aspects like site selection, stacking techniques, and measures for protection against fire, fungi, insects, and weathering.

Guide for storage and protection of logs and sawn timber

Quick Reference Values

Minimum clearance between adjacent stacks6 m

Maximum height of timber stacks4.5 m

Minimum height of foundation bearers above ground30 cm

Clear zone free from combustible material around storage yard15 m

Practical Notes

Although an old code (reaffirmed in 2018), its fundamental principles for timber storage remain critical for preventing material loss on sites and in yards.

The guide emphasizes the importance of good 'housekeeping' in storage yards, including regular inspections, removal of debris, and maintaining clear fire lanes.

Pay close attention to stacking methods; proper air circulation is key to preventing fungal decay, especially in humid conditions.