Understanding The Difference Between Helical Piers And Push Piers
For those who think that the difference between helical piers and push piers is nil, need to rethink again as you might be missing some basic differences between the two. If you ever meet a distributor for helical piers or any other professional helical pile installation contractor, you will get to know the difference between. Meanwhile, if you are still interested in understanding the difference without having the need to meet a helical pier distributor or contractors, this write up may help you in best manner.
Helical piers happen to be a different category of piers that has more than a dozen names. Helical piers are square pipes or bars that consist of helices. It uses a hydraulic motor to turn around the pipe that helps it in fixing the screw in ground. The direction of this pier can be any from inclined one to a vertically straight one. The load bearing capacity of this one though depends on soil quality, the stiffer the soil higher will be its load bearing capacity. It also features an equally unique property in terms of tension bearing capacity and compression. It can be installed over any capacity through an installing equipment irrespective of any mass, building, compound, or foundation. It is considered highly suitable for fractured footings, light loads, constructions, temporary applications, as well as tension loading. Its regular capacity stands somewhere around 156Kips, however, there are some specimens that have known for crossing this figure.
So what are push piers? Push piers aka resistant piers are the open ended pipes that are vertically pushed in the surface till the limit these get terminated in the soil. The soil needs to be tough for these kinds of helical, loose soil will not hold their weight. The installers use hydraulic ram to insert piers which are then anchored with the structure. Structure’s weight thus becomes the resistance mass against which the push is made; hence, they get their name as push piers. However, the load bearing capacity of these piers is directly proportional to the direct load offered by the building. It has no safety factor and bears a one to one capacity. The Factor of Safety (FS) is obtained through multiple push piers that are designed only to share the load. Push piers are known for their strength despite of the simplicity of their designs. They are highly suitable for heavy loads and can be easily installed in very restricted and narrow areas. Their regular capacity goes as high as 90Kips.
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