Spillway Gates & Frames

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A gate that holds back a river

A radial gate swings about two trunnions to let water over the spillway. Its accuracy decides whether it seals.

Scroll to see how it is built · drag to turn it round

02 / 07

Skin plate to the radius

Plate rolled to the gate’s radius and checked against a full-size template before it goes on the ribs.

How is it possible at Allmarc?

Three-roll pinch cum pyramid plate rollsRolls plate up to 40 mm

Used here for: Skin plate to the radius

• Rolls plate up to 40 mm

All our machinery

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Girders and ribs

Built-up girders from the beam line, and curved ribs behind the skin.

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Arms and trunnions

Arms built up and machined at their ends; trunnion hubs and anchor brackets machined in one set-up so the gate turns true.

How is it possible at Allmarc?

SKDX1030 CNC end-face millingMills beam and column ends square for bolted splices

Used here for: Arms and trunnions

• Mills beam and column ends square for bolted splices

All our machinery

AMG FSD2040 CNC plate drillingCNC plate drilling

Used here for: Arms and trunnions

• CNC plate drilling

All our machinery

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Seals

Stainless seal seats along both edges.

06 / 07

Hoist bridge

Girders, deck and rails for the hoist.

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Every part, apart

Skin, girders, arms, trunnions, seals and bridge.