3003 W CASINO RD 1992 SITE DEV 2018-01-01 MF Import

�DRAFT to the total of dead pius long-term live loads ezciusive of the weight of the footing and any overlying backfiil. 'Riese values may be increased by up to one-third when wnsidering wind or seismic loads. We will provide more detailed information including recommendations for lateral loads and estimated settlements for final design. Slab on f3rede Support We anticipate that p�pi;.al office tloor slabs may be supported on prepared subgrade soils or structural fill placal and ccmpaMed as described previously in this report. In areu where the native soils serve as floor slab support, we reAmmend a 4inch-thick capillary break consisting of clean sand and gra��el or crvshed rock be placed to support the floor siab. Tbe capillary brealc mate�ial should have a maztmum particle size of 3/4 inch and contain less than 5 percent by weight pusing a U.S. No. 200 sieve. The capillary br;.ak material should be compacted to at least 95 percent of the mu.imum dry deosity(A:iTM D-1557). We also recommend tbat a vapor bazrier be placed between the floor slab and the t�ase course. A subgrade modulus of 100 pounds per cubic inch (pci) may be used for design of the floot slab bazed on the recommendatiorts presented in this report RETAINING WAILS General We understand that retaining suvctures up to about 8-feet in height may be required for grade transitions or for the fill emban{�nent placed ir.the south end of the site. The south portion of the site contatns existing loose fill in the area of tlie proposed embankment. A]I loose or soft soils should be removed below foundation areaz. It is important that soil and ground water conditions exposed in foundatioo areas be thoroughly ezamined during construceion to determine [hat these conditions are az expected. Several types of retaining wall suuctures are available with multiple facing options and vazied costs. We are providing general guidelines for conswcting rockeries, Keystone Retaining Walls, geotextile K•alls and Reinforced Earth Wa11s in the following sections. Rockeries General: The primary purpose of a rockery is tc protect the slope face from erosion and raveliing,w�hile providing limited soil retention. We rea�mmend the following guidelines be used for design and consavccion of any rockeries at the site. T6e baze of tl�e rockery ahould be embedded at Irast one-half the ihiciaiess of the lowest course of rocks or to 18 inches below the adjacent ground surface, whichever is greater. The rockery should be supported on fvm, undisturbed native glacial till soiis or compaaed swctural fill soils. The final rocr w�all face should be conswcta� w�ith a batter of between 5:1 and 6:1 (vertical to horimntal), G e o E n Q i n a e t � $ RIe No.0124150�R10�062:9I