C.M.R. 02, 385, ch. 900, app 385-900-C
I. General Specifications for Site Preparation
A. Compacted fill shall consist of gravel or sand which contains less than 5% (by weight) grains that will pass a #200 sieve.Gravel fill shall contain no rocks or boulders larger than 3" in diameter.Compacted fill shall contain no organic matter.Compacted fill shall not be frozen when placed or compacted.
B. Compacted fill shall be compacted in a maximum of 6" lifts.Each lift shall be compacted sufficiently so that when 1000 lbs. is applied to a 31/2" x 31/2" block placed on top of the fill, the block will not sink more than 3/8" into the fill.Refer to Recommended Compaction Test Procedure below.
C. Compacted fill shall be placed on undisturbed and unfrozen soil.The site shall be free of topsoil and organic matter prior to the placement of fill.
D. Crushed rock shall consist of clean, washed rock, and may range in size from pea gravel to 3/4".All crushed rock shall be retained by a #4 sieve.
E. The perimeter of foundation sites shall be graded to prevent the flow of surface water under the home and to prevent the accumulation of surface water within 10 (ten) feet of the perimeter of the home.
C.M.R. 02, 385, ch. 900, app 385-900-C