Invention Grant
US08128319B2 Shielded tamper and method of use for making aggregate columns 有权
屏蔽篡改和制作聚合柱的使用方法

Shielded tamper and method of use for making aggregate columns
Abstract:
A tamper device includes a shaft for driving a tamper head. A tamper head is attached to the end of the shaft for tamping a lift of aggregate in a cavity formed in a ground surface. A shield extends upwardly a predetermined height from the tamper head an amount sufficient to prevent sidewalls of the cavity from failing and collapsing. Methods of constructing aggregate columns with thicker lifts are also disclosed.
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