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1 |
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Here the A Type Floodwalls units are laid out ready for inflation. As you can see they can be placed over nearly any surface, roadway, tarmac, grass, gravel, etc. The only cautions are to avoid sharp objects and protrusions and make allotments for severe changes in height, such as passing over curbs or parking lot dividers.
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2 |
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As the units are inflated with water from hydrants, or other suitable sources, the barrier takes shape and can conform to most any required configuration.
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3 |
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Knowledge of the floodwaters flow pattern will allow the placement of the FLODWALLS units and the construction of the barrier to meet local demands and needs.
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6 |
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These units are A5’s. This means that they are 5 meters long. Each one has a footprint that is 7 feet wide and when filled weighs over 7 tons. This mass plus the patented internal baffling configuration provides an extremely stable barrier as protection against floodwater damage.
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7 |
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Filling the individual units and allowing them to fill at the same rate, although not strictly necessary, provides the best seal between along the matching vertical surface.
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8 |
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As the units fill the “A” shape becomes more apparent and the units become increasingly stable. The greatest stability is developed with full inflation and is most effective when floodwaters build-up on the side of the barrier indicated by the arrows found in the unit label. The floodwater side is also toward the side with the low drain couplings.
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9 |
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The correct placement of the units, before filling, determines the effectiveness of the seal and the reduction of the potential for floodwater leakage.
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10 |
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90 degree corners are easily constructed by placing the end of the FLODWALLS unit slightly under and closely situated against the side wall of the adjacent unit.
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11 |
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Some vertical height is lost in the construction of the corner due to the rounding of the to matching surfaces.
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12 |
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The full vertical height for floodwater protection can be re-established by adding sandbags to the “v” shaped notch formed by the rounded surfaces.
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13 |
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When filling and after, although rarely needed, additional support can be afforded by the use of any available object that has sufficient mass. Suitable objects could be vehicles, pallets, sandbags, or additional FLOODWALLS units. The FW units can be situated parallel along the length of the barrier or perpendicular, as is seen in the construction of the 900 corner.
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16 |
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When draining, it may be desirable to direct the flow of water to specific areas or sewers. This can be accomplished by attaching the fill lines to the drain openings when commencing redeployment.
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