832 RUCKER AVE 2016-01-01 MF Import

Proposed Modification to the Residence of Joel 8 Kathy Larsen February 12, 200J Everett, Washington ORA Project Number. 04-065-Report 1 weak Silty SAND soil. Piles beneath the main residence Piles in individual columns should be driven in groups of three or more to compensate fo� possible eccentricities of loading unless the structural engineer designs a system of grade beams. The installation and testing of the pin piles must be monitored full-time by a representative of the geotechnical engineer. Lateral earth pressures for design of foundations, basement walls, or low retaining walls with level backfill and without hydrostatic pressures or surcha.�e loads, may be calculated using the equivalent fluid pressures presented below: Active: Passive: At-rest: Undisturbed subsoils Compacte� granular soils Continuous footings Compacted granular soils 40 psf/ft. 45 psf/ft. 350 psf/ft. 60 psf/ft Footings, grade beams, stem walls, and basement walls must be reinforced to reduce the potential for distress caused by differential foundation movements. A qualified engineer should determine the size, quantity, and location of reinforcement. 6.3 Slabs-on-Grade The basement level of the principle residence will be constructed as a cast-in-place, concrete slab-on-grade at about elevation 499 feet. The floors of the garages will be constructed as cayt-in-place, concrete slabs-on-grade at about elevation 504 feet. All concrete, especially slabs-on-grade, should be placed at minimum water-cement ratios on moistened surfaces and properly cured to minimize shrinkage, cracking, warping, and curling. Concrete slabs should be allowed to cure adequately before placing vinyl or other rnoisture censitive surface treatments. 6.3.1 Basement Slabs The bottom of the basement floor concrete must be placed at an elevation at least one foot above the anticipated high groundwater level to maintain a relatively dry floor. If it is Otto Rosenau 8 Associates, Inc. Page 7 of 13