What are the standard dimensions of a Broad Gauge (BG) wooden sleeper?

2750 mm (length) x 250 mm (width) x 130 mm (thickness) as per Table 2.

Which timber species are approved for sleepers?

Species like Sal, Teak, Deodar, and others listed in Table 1 are permissible.

Is preservative treatment mandatory?

Yes, unless the timber is naturally very durable (e.g., heartwood of Sal), sleepers must be treated as per IS 401 to prevent decay and insect attack.

What does the code say about defects?

Clause 3.2 specifies that the timber shall be free from defects like heartwood rot, sapwood rot, large or loose knots, and cross-grain that would impair strength and durability.

IS 10394

: 1982

wooden sleepers for railway track

CurrentSpecializedSpecificationTransportation · Timber and Timber Stores

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This standard specifies the requirements for various types of wooden sleepers used for railway tracks. It covers permissible timber species, dimensions, manufacturing processes, tolerances, and inspection criteria for broad gauge, metre gauge, and narrow gauge tracks.

wooden sleepers for railway track

Quick Reference Values

Standard BG Sleeper Length2750 mm

Standard BG Sleeper Width250 mm

Standard BG Sleeper Thickness130 mm

Standard MG Sleeper Length1800 mm

Standard MG Sleeper Width200 mm

Standard NG Sleeper (762 mm gauge) Length1500 mm

Maximum Permissible Twist5 mm

Maximum Permissible Bow10 mm

Practical Notes

While still in force, the use of wooden sleepers has been largely superseded by pre-stressed concrete (PSC) sleepers in mainline Indian Railways construction and maintenance.

Proper identification of timber species as per Table 1 is critical to ensure sleeper durability and strength.

The code's requirements are foundational for procurement contracts for wooden sleepers by railways and other industrial users.