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An al­ter­na­tive to con­ven­tional bored or driven piles, lighter weight metal­lic helical piles are lit­er­ally screwed into lo­ca­tion through ro­ta­tion. These piles come in stan­dard sec­tional lengths and can be bolted to shaft ex­ten­sions with a pro­pri­etary con­nec­tion de­tail. Some have a liq­uid grout poured into their ex­ca­va­tion as they are wound into the ground, en­sur­ing any voids around the shafts are filled as the in­stal­la­tion process takes place. The main ben­e­fits of this so­lu­tion in­clude:

Their quick and easy in­stal­la­tion – ro­ta­tional equip­ment can be added to most types of hy­draulic ex­ca­va­tor in­clud­ing JCBS.

Although lighter weight, they can carry fairly sub­stan­tial loads, mak­ing them ideal for ex­ten­sions and some lighter weight stand-alone build­ings.

They can be adapted and used as a means of un­der­pin­ning in cer­tain sit­u­a­tions.

They cause less dis­tur­bance to tree roots, so are a sym­pa­thetic op­tion in wooded en­vi­ron­ments.

They are an ideal so­lu­tion where ac­cess to a build­ing site ac­cess is lim­ited, mak­ing it dif­fi­cult to ac­com­mo­date big ma­chin­ery.

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