 |
 |
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
 |
||
|
 |
|||||||||||
 |
||||||||||||
|
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|||||||||||
|
|
||||||||||||
 |
|
The EQ-Force process is the only earthquake process which reduces the seismic force on a footing and decreases damage to the structure. |
|
|
There is no magic in the installation Installation of the mini-piles will normally be done through the footings. Holes are cored in the need to extend to firm soil or bedrock, but must not be socketed into it. If compaction piles are used, the rebar inserted into the casing should be left short of the bottom by a foot or so. The rebar should be cut short of the bottom of the footing by the depth of the firm soil under the footing. Grout quantities are based on normal factors for densifying the soil. Soil variations are often encountered in layered soil, so the amount of grout pumped in will vary according to typical compaction grouting considerations. Hard clay or floating rock is easily accommodated and the density of the grouted soil will, in fact, be evened out. In the case of new construction, the holes in the footing can be formed with cast in pipe sections. The limitation in using conventional pipe piles, concrete piles, or H-piles is usually dictated by the site where headroom is often the restriction. If the area is clear and there is room to maneuver equipment, then any method is a good method. Stone columns have been shown to have substantial effect on reducing settlement during earthquakes. The small angle off vertical of the EQ-Force array will pose no problem for the vibro-flotation equipment used for the installation. It is likely that the 1:1 battered piles used in the array will not be needed for stone columns because of their large diameter. In net effect, the installation is conventional and procedures and controls also should be conventional. |
|
|
|
|||||
|
 |
|
Knoxville, TN 37932 Ph 865-671-2925 Fax 865-671-2895 |
|
Copyright © 2004 EQ-Force ™ Incorporated. No part of this site may be copied without permission. |
|
|
||||||
|
||||||