Project Description
# 1 | Installation ⊥ perpendicular
This is the fastest and most dramatic type of installation. The flexible cofferdams become pressurised instantly.
Water-Gate© is suitable for any kind of river bed: because of their incredible flexibility, our inflatable cofferdams snugly fit the banks and the bed of the waterway, whatever the terrain.
WaterGate guarantees an excellent seal thanks to the pressure exerted on the ground sheet by the water.
How to install the branch pipes?
- First of all, the diameter of the pipes must be correctly dimensioned, based on the observed average flow rate of the river at equivalent period.
- We recommend placing the pipes under the “Water-Gate ©” dam in order to optimize the useful section and the flow.
- The pipe should be wedged with sandbags or ideally clay to limit leakage at the base of the tube for 2 meters from the leading edge.
- Cover the clay with rockery to increase the friction forces before installing Water-Gate©.
Removable overflow weir and flexible pipes for narrow river beds
In the case of low flow rates – less than 100l / s | 360m3 / h – It is possible to use the Water-Gate© DS-1200 overflow weir that is positioned directly on the ridge edge of the dam. The evacuation is carried out by flexible polyethylene pipes with a section of 450mm.
Flexible hoses are easy to install, with a reduced footprint and the ability to bypass obstacles.
This saves considerable time for the worksite preparation phase.