I belive that could be some improvement. Just remember as you add weight to a structure, it gets weaker, especially it that weight is all load and no bearing. The sand will lower the frequency of vibrations and it should dampen them as well but it cannot bear its own weight and actually places a load upon the structure you want to stiffen. This load is not biased nor structural as would be the tie down rods I previousely mentioned. A crossed braced structure tied together just under the floor and a short steel pier bolted on top and going through but not touching floor might be best. Sort of like an electrical tower structure. Actually a well designed floor may work reasonably well in your case. A local college had a C-14 mounted on a portable tripod in a roof top observatory. The roof has a concrete surface and the observatory sits on top. If somebody jumped up and down you could see the image wiggle but for the most part it performed better than a poorly engineered pier.

If you put in the pier and find it doesn`t work you could then add the secondary structures, especially if you pre-plan and add tie points.

Good Luck,
-Rick

• RE: RE: RE: 2 story 24 - Brett Wood - September 17, 2000 - 15:27 UTC