222 W CASINO RD 2020-05-06 - Laserfiche WebLink

. • e. Details for the required connections between the anchor straps and the building structure shall be provided in the construction drawings. Calculations substantiating the design of the strap connection to the structural shall be submitted for review. See IBC Section 1604.1. Response: Anchor Straps are wrapped around the module rim joists at the module factory. Tails of the straps are temporary attached to the bottom of the module for connection of the soil anchors per the soil anchor manufacture installation manual. f. Continuing with the previous comment,the straps shall be connected to structural framing that are capable of transmitting the design loads to the straps. Calculations substantiating the load path shall be submitted as needed. The structural shall include supplemental framing as needed to provide the required load path. See IBC Sections 1604.1 and 1604.4. Response: As per the response to e. above, the anchor straps are wrapped around the module rim joists at the module factory and connected in the field. Additionally, per the response to b. above, the floor diaphragm is sufficient to transfer the load to the anchors, no additional framing is needed. 3. Structural Note 2.6 on Sheet Fl states that the allowable soil bearing strength is 1,000 PSF. The following comments shall be addressed: a. The bearing strength units shall be revised to"PSF". Response: Soil bearing value will be shown in terms of PSF, not PSI. b. The specified bearing strength appears to correlate to the Moderate Risk Option(Option 2)per page 7 of the geotechnical report. Per page 8,this option has a total estimated settlement of 1 to 2 inches. The lateral straps between the building and soil anchors in Detail 5/F1 appear to provide tension-only resistance, which will be nullified if the estimated settlement occurs. The Engineer-of-Record (EOR) shall comment on how the integrity of the lateral system will be maintained if significant settlement occurs. Additional requirements shall be provided in the constructions to mitigate the impacts of settlement on the anchorage system. See IBC Sections 107.2.1 and 1604.4. Response: A statement on expected settlement is included in the new geotechnical addendum, (dated July 23, 2019, and prepared by GeoTest Services, Inc.). and expected to be a long term condition. If and when settlement occurs and is sufficient to loosen straps, the straps can be tightened. Thank you so much for your time. We look forward to hearing from you soon. If you have any questions,please do not hesitate to contact us. Sincerely, Scott Connor Principal SCRIArchitects Response to Correction Letter-Portable at Horizon Elementary School/Project No.B1906-015