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Mock Residence Foundation Stabilization Structural Observation Report #4 08.23.19 (1)C � ENGINEERING civil & structural engineering & planning STRUCTURAL OBSERVATION REPORT Project: Mock Residence Slope Stabilization Purpose: Structural Evaluation Location: 21100 88th PI West Date: August 23, 2019 CG Project: 18295.10 Report: 4 Client: Darrin Mock General Contractor: Unknown Field Rep: Morgan Kruse, PE PURPOSE AND SCOPE A field representative of CG Engineering was on site on August 16, 2019 to observe the structural slab and upper grade beam reinforcing. Prior to our site visit, approximately 75'-0" total length of lower concrete grade beam had been poured and completed, along with the block retaining wall below the structural slab and upper grade beam. The epoxied dowel bars had been installed and set in place. EXISTING BUILDING The existing building is a single family residential structure that had experienced settlement to the downhill side. The existing rockery wall at the edge of the rear patio was removed and will be replaced with an allan block and geogrid wall system supported by a concrete grade beam. The concrete patio slab will then be replaced with a new structural slab. At the time of our site visit, the entire length of block retaining wall and supporting structure below had been installed. OBSERVATIONS Structural Slab Reinforcing — While on -site, we observed the reinforcing for the structural slab and upper grade beam, which were placed prior to our arrival. The slab reinforcing was properly drilled and epoxied into the existing foundation wall as observed during a previous site visit. The slab and grade beam reinforcing appeared to conform to the requirements of the approved structural drawings and no issues were noted. To the best of our knowledge, the construction that we observed was in accordance with the approved structural drawings. _ 0�G GUr 4' of W 4 �2SEU OVAL/Q3/r DISCLAIMER This observation is the professional opinion of CG Engineering PLLC based on the information available during this assessment or evaluation. This report does not warrant or guarantee that all conditions were discovered at the time of the observation. This report was prepared subject to the standard of care applicable to professional services at the time the services were provided. 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph.425.778.8500 1 f.425.778.5536 www.cgengineering.com Mock Residence Foundation Stabilization CG Project No. 18295.10 August 23, 2019 Page 2 of 3 Photo 2—structural slab reinforcing C 4m ENGINEERING 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph.425.778.8500 1 f.425.778.5536 www.cgengineering.com Mock Residence Foundation Stabilization CG Project No. 18295.10 August 23, 2019 Page 3 of 3 C 4m ENGINEERING Photo 4 — structural slab reinforcing doweled into foundation wall 250 4th Avenue South, Suite 200 Edmonds, WA 98020 ph.425.778.8500 1 f.425.778.5536 www.cgengineering.com