2939 COLBY AVE EVERETT MUSEUM 2023-09-26

0 �► Everett Museum of History Structural Assessment November 17 CG Project No. 17390.10 age 3 of 5 basement level,a portion of an existing wood shearwall is being removed at the SW corner of the Controlled HVAC Use room.The remaining length of shearwall at this location will require analyses per the IBC and may likely require upgrades, such as additional plywood nailing and new post-installed holdowns. CONDITION OF EXISTING BUILDING Based on our site visit,the overall condition of the building was observed to be sound. With the exception of the issues listed below,there were no signs of deterioration to the structural members that were visible.The following is a short list of structural concerns that were was observed and although they are not directly related to the lateral system,they are important in that they may affect the longevity of the structure. Cracks in Concrete Basement Wall The concrete basement wall on the north side of the building had (2)full height vertical cracks. At these locations,the walls are not retaining soil and there was no evidence of moisture leaking through.We recommend repairing the cracks with a pressure injected epoxy,such as KonTek K-111 or KonTek K-103. Condition of Brick Basement Walls The majority of the brick basement walls showed signs of moisture leaking into the building.The skim coat was peeling off and there were signs of efflorescence.The brick walls still appeared to be sound, but the moisture intrusion should be addressed. Refer to architectural report for recommendations. Column with Insufficient Support In the basement,there was a column that was supported on a wood shim. We recommend replacing the wood shim with a concrete pad,similar to the adjacent columns. CONCLUSIONS Based on our observations during our site visit,we found the building to be sound overall.Several minor items do require attention as listed in the Condition of Existing Building section.Also, analysis and possible upgrades to the roof and floor framing members are required due to the proposed change of use and also due to the proposed removal of several columns at both levels. IP� GU/z IL 11/17/17 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.