Case Study Overview
A modular steel dam system was designed and fabricated in three pieces, 5.6m wide x 6m high total size. A modular approach was taken due to restrictions on available crane size and transport restrictions to site. Support angles were fabricated to match site survey measurements, these were taken to site and fitted by divers.
The three sections were fabricated in steel and fitted with neoprene seals. The lower section weighing 5 ton was lowered into place, the upper section weighing 3 ton was then lowered and bolted to the lower section. The top splash over section was modified and welded on site to suit top detail of the culvert due to overhang detail.
The dam seals were designed to work under gravity for the vertical sealing and when the water was pumped out, the horizontal seals were designed to be compressed by water pressure.
At a glance
- Project: Fabrication of modular dam to allow repair works to intake structure at Abberton reservoir.
- Location: Ipswich R7M fabrication facility
- Programme Duration: 3 week fabrication programme completed on time
- House resources Work: Modular dam system designed by R7M personnel. All fabrication and welding works by R7M personnel.
- Sub-contractors Work: Calculations package by structural engineers
The Solution
This would reduce installation costs by minimising dive time and crane time. By using vertical and horizontal seals in the design, the dam would only require simple installation methods to minimise water ingress.
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