What is the standard material for the stem?

Stainless steel conforming to Grade 04Cr13 of IS 6603 is standard, unless otherwise agreed upon (Clause 4.1.2).

What is the maximum leakage allowed during the seating test?

The leakage rate shall not exceed 1.25 litres per minute per metre of the perimeter of the sealing face (Clause 9.4.1).

What is the required hydrostatic test pressure for the gate assembly?

The gate assembly must be tested at 1.5 times the maximum design head, with a minimum pressure of 0.1 N/mm² (approx. 10.2m water head), for 15 minutes without showing any signs of leakage (Clause 9.3).

What sizes do these standard gates come in?

The standard covers nominal sizes ranging from 200 mm to 1200 mm (Table 2).

IS 13349

: 1992

Cast iron single faced thimble mounted sluice gates

CurrentSpecializedSpecificationBIMWater Resources · Sanitary Appliances and Water Fittings

Download PDF BIS Portal Google

This standard specifies the requirements for cast iron, single-faced, thimble-mounted sluice gates used for controlling water flow in open channels. It covers materials, dimensions, manufacturing, workmanship, testing, and marking for gates ranging from 200 mm to 1200 mm in size. The standard is intended for gates operating under a maximum head of 6 meters.

Cast iron single faced thimble mounted sluice gates

Quick Reference Values

Minimum Grade of Cast IronFG 200 of IS 210

Stem MaterialStainless Steel Grade 04Cr13 of IS 6603

Seating Face MaterialLeaded Tin Bronze Grade LTB2 of IS 318

Maximum Allowable Seating Leakage1.25 litres/minute per metre of seating perimeter

Hydrostatic Body Test Pressure1.5 times the design head (min 0.1 N/mm²)

Standard Gate Sizes200 mm to 1200 mm

Maximum Design Head6 meters (for standard sizes)

Practical Notes

Thimble mounting is specifically designed for embedding into new wet concrete, creating a superior water-tight seal and load transfer path.

Ensure correct orientation of the thimble during formwork, as post-installation correction is extremely difficult and costly.

During procurement, clearly specify the 'off-seating' or 'on-seating' pressure requirements as it affects the design and cost.