2507 HOWARD AVE 2016-01-01 MF Import

G�otechnical Gngineering Report llousing Flopc December 5. 2004 RMI Pilc No.21704 Page 9 Structurnl rill General: Pill placed bencath the founda[ions, slabs-ou-grade, pavemcnts, or other settlement- sensitive strucWres should be placed as structural fill. S[ructural fill, by definition, is placed in accordancc with prescribed mcthods and standards and is monitored by an experienccd geotechnical professional or soils technician. Field monitoring procedures would include ihe perlormauce of a representative number of in-place density tests to document the attainment of [he desired degree of relative compaction. The area to receive the fill should be prepared as oudined in the Site Preparation and Grxding subsec[ion of[bis report. Materials: Lnported strucwral fill should consist of a good qimlity, free-draining, granular soil, fine of organics and other deletcrious material and be well graded to a masimum size of about 3 inches. Imported, all-wea[her fill should contain no more than about five percent fines(soil finer [han U.S.No. 200 sievc, bns-ed on that fraction passing the U.S. 3/4-inch sieve). Wc expect that compaction oF the sandy, native soils to structural fill specifications should be xhicvable depending on the moisWre content. Thc use of omsite soils as sVuctural fill would be depcnden[ on moisturc-con[ent con[rol. Some drying of die soils may be nccessary in arder to achievc compaction during winter weatl�cr. During«�arm, sunny days this could be accomplished by spreading Ihe material in [hin litts and compncling. Some aeration and/or addi[ion of moisture may also be necessary�. We ��P��t die soils could be used except in the wettest months of the ycar. Pill Placement: Pollowine subgrade preparation, placement of the structural till may proceed. All backfilling should be accomplished in 6- to 8-inch-thick, uniform lifts. Each lift should be sprcad evenly and be thoroughl}'compacted prior[o placement of subsequent IiRs. All struc[ural fill underlying building areas and within 2 feet of pavement suberadc should be compacted to � minimum of 95 percent of its maximum dry density. Maximum dry density, in this report, refers to that density as de[crmined by the ASTM D-15�7 Cumpaction Test procedure. Fills more than 2 feet beneath sidewulks and pav�ment subgrades should be compacted to 90 percent of their m�simum dry density. The mois[ure conten[of the s'oils ro be compacted should be within abuut 3 perocnt of optimum so that a readily compactable condition esists. It may be necessary to overexcavate and remave wet soils in cases where drying to a cumpuctable condition is not RMI ASSOCIATES, LTD.