Sand bags – The Best Tool For Flood Defence
Executive Summary about Sand Bags by Mychael Todd
More recently woven polypropylene sand bags have been introduced and are proving more effective for certain operations involving these flood defense sand bags.
Sand is by far the easiest and most effective material for filling and shaping sand bags. In a time of flooding the rain also helps to saturate from the rain and also makes the bags heavier.
Sand bags can be used to:
- Prevent overtopping levees
- Stacking sand bags by home gates and doors can greatly diminish flood damage
bags of sand
It is commonly thought that sand bags should be built as a wall to completely block water, this is a misunderstanding.
It is possible to completely block water, but this requires enough time to construct a pyramid styled wall many sandbags thick. This takes time and the very nature of flooding means that people rarely have time to prepare.
The force of the water can be so great it is much more advisable to quickly build a much thinner wall with the aim of redirecting the flow of the water away from the location being targeted by the water flow.
Sand bags – Limitations
- Sand bags will not seal out water.
- Sand bags deteriorate when exposed for several months to continued wetting and drying. If bags are placed too early, they may not be effective when needed. If it is necessary that bags remain durable for a longer time, the addition of cement can increase effective life.
- Sand bags are basically for low-flow protection (up to two feet). Protection from high flow requires a permanent type of structure.
It is important to place the bags with the folded top of the bag in the upstream or uphill direction to prevent the bags from opening when water runs by them.
Also, check out the other articles on Bag Filter and Burlap Bags.
Sand Bag Review
Sand bag structure
A sand bag structure includes a main body including two sides and a bottom integrally combined with each other. Thus, the two sides and the bottom of the main body are integrally combined with each other, and each of the two sides and the bottom of the main body has a determined width and thickness so as to enhance the support effect of the sand bag structure, thereby preventing the sand bag structure from being broken when containing the sand.
Loading System
sand bags
A sand bag loading system comprises a mounting assembly. The mounting assembly has legs with a connecting member provided there between. The connecting member has first and second ends. A loading tube assembly is provided. The loading tube assembly has a loading tube and a hopper. The loading tube is in a hollow cylindrical configuration with upper and lower sides and first and second ends. The loading tube has an aperture in a rectangular configuration. The hopper is of a rigid metallic material. The hopper has two diverging rectangular sections, coupled to the aperture sides. Two V-shaped sections are coupled to the aperture ends. A bracket hinge assembly is provided. The bracket hinge assembly has upper and lower portions. The upper portion is coupled to the tube. The lower portion is coupled to the connecting member. A pivotal pin is provided between the upper and lower portions.
Sand bag filling device
A new sand bag filling device for taking bulk sand and filling sand bags with the bulk sand on demand. The inventive device includes a hopper having interior space, a top, a bottom, a pair of end walls, and a pair side walls extending between the end walls. The top of the hopper has an opening into the interior space of the hopper while the bottom of the hopper has ground engaging members. A conduit outwardly extends from one of the end walls of the hopper away from the hopper. The conduit has a first opening into the interior space of the hopper and an exterior second opening outside the hopper. An auger member is rotatable mounted in the interior space of the hopper. The auger member extends from the interior space of the hopper into the conduit through the first opening of the conduit so that its screw portion is extended into the conduit. A motor is proved for rotating the auger member in a direction.
Source: http://www.freepatentsonline.com
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