1999-245 - Laserfiche WebLink

Home Browse Search

40 r SM I KELLER, SCHLIEICHER & Mac WILLIAM ENGINEERING AND TESTING, INC. RO. BOX 78-1377. SEBASTIAN, FL 32378-1377" SEBASTIAN (581) 588.0712 MELBOURNE (407) 76B-8488 FAX (561) 569.6469 shooting Range -3- June .16, 1998 Based on this investigation and our interpretation of existing site conditions, we prepared the following table for the boring locations indicating the measured water table and normal high seasonal water table. The location of the boring holes are indicated on the attached location plan in the appendix. ---------------- Water Table Below Existing Grade Percolation Location ---------------- P1 P2 2. Roadwms Existing ---------------- 4011 38" Wet Season ----------------- 411 loge The material below the proposed roads is suitable to support the roads. We did not find material (muck, silt, etc.) that would require any modification. Therefore, the roadways may support a flexible pavement. The minimum pavement design should include the following: Clear the roadway area of any surface debris, including vegetation, roots and organic matter. The cleared areas should be graded level and proofrolled. Any soft yielding areas shall be excavated and repincod with clean compacted fill. Sufficient passes should be made during compaction operations to produce a density no less than 95 percent of its modified proctor value (AASHTO T180) to a depth of two feet. Additional fill shall consist of clean granular sand containing less than 8% material passing the U.S. Standard No. 200 mesh sieve and placed in loose layers of 12" and compacted to the above densities. A minimum of six inches of suitable clayed soil having a Florida bearing value (F.B.V.) of 50 should be used for the stabilized subgrade and compacted to 98 percent of its modified proctor value (AASHTO T180). We estimated that the existing material found will have a F.B.V. value of 20. Therefore, considerable marl would be required to satisfy a F.B.V. of 50.