Laserfiche WebLink
>^The existing structure appears to have performed well, with <br />Ao obvious settlement or cracking. Nevertheless it is very likely <br />that settlement occurred in the past, probably within the first 5 <br />to 10 years after original construction. <br />We were informed by the owner, Mr. Hagfors, that the house <br />is supported on shallow footings which extend to only 2 to 3 feet <br />below grade. <br />It is now proposed to construct a 1 or 2-story wood frame <br />addition with crawl space under. Structural loads on the footings <br />or the subsoil will bo relatively light. <br />Our single soil boring, which is actually further from the <br />lake than the addition, indicates 7* of old fill over a 13 <br />thickness of very soft lake margin organic soils including 2' of <br />peat. It is our considered opinion that support of the new <br />addition on conventional continuous strip footings under the <br />bearing walls would result in excessive differential settlement <br />between the new addition and the existing structure. Furthermore <br />the influence of the new loading associated with the new <br />construction will extend under adjacent portions of the existing <br />house, and could cause some settlement of the affected portion of <br />the old structure. <br />Thus some form of special foundations is recommended.