Laserfiche WebLink
Mr. Gary Gleason, P.E. 7 January 17, 2001 <br /> GME Project No. 9256 <br /> Under the exterior patios, we recommend placement of a select non-frost <br /> susceptible (NFS) granular fill . Many of the soils encountered in our <br /> borings, although suitable for the support of foundations, are frost- <br /> susceptible and would seasonally freeze, expand, and heave the patio <br /> slabs or pavements . Placement of NFS backfill would mitigate this <br /> potential problem. <br /> Details of our recommendations are presented below. <br /> Site Preparation <br /> We recommend that all of the remnants of the existing building, including <br /> foundations, floor slabs, foundation walls, and underground utilities, be <br /> completely removed to expose the naturally-occurring underlying soils . <br /> In the main portion of the new building footprint, we recommend stripping <br /> the topsoil, and removing all tree stumps, major root systems, and other <br /> vegetation. The exposed soil at the base of the excavation and stripped <br /> areas should be compacted in-place with a heavy towed or self-propelled <br /> vibratory roller, applying a minimum of eight passes . � <br /> We recommend that only select granular soil be used as the backfill . <br /> This should be a material such as Mn/DOT 3149 .2B1, 2B2, 2C, or 2D. In <br /> addition, if the contractor wishes to propose another granular material <br /> for consideration, a sample should be sent to our laboratory for <br /> 6MB CONs11�TANTd,INC. <br />