PC-2025-16 - Laserfiche WebLink

Hana Japan Steak House 5150.100.001 11991 Dublin Canyon Road November 11, 2024 RESPONSE TO COMMENTS Page 6 Comment 17 Geotechnical Report, Section 6.8.1 (Surface Drainage) Note 2: Per Section 1804.4 of the 2019 and 2022 CBC, consideration should be given to recommending that the ground adjacent to foundations have minimum gradients of 5% and 2% for a lateral distance of 10 feet for exposed ground and impervious surfaces (such as concrete flatwork), respectively. ENGEO Response to Comment 17 We will add these recommendations, which are included in the CBC in the Reference 2 update. Comment 18 Geotechnical Report, Section 6.8.2 (Subsurface Drain): The minimum lateral spacing between consecutive parallel rows of subdrain lines/trenches under the building pad should be provided. ENGEO Response to Comment 18 Our recommendation is for a perimeter drain. We would only add interior drains if groundwater were encountered during construction and the drains would be placed as necessary based on conditions encountered. We will add this construction consideration to the Reference 2 update. Comment 19 Geotechnical report, Section 7.1 (Conventional Footings with Slab-on-Grade): This section of the Geotechnical Report should discuss how the footings should be designed in order to mitigate the potential for secondary ground deformations discussed in the Fault Exploration. ENGEO Response to Comment 19 We will add a section on mitigation in the Reference 2 update that will recommend tying isolated footings together or using a mat foundation. Comment 20 Geotechnical Report, Section 7.2 (Footing Dimensions and Allowable Bearing Capacity): BSK takes no exception to the minimum footing embedment depths shown in Table 4 of the Geotechnical Report provided that the upper 3 feet of the building pads consist of low expansion potential soil having a plasticity index of less than 12. Otherwise, consideration should be given to extending the minimum footing depth to 24+ inches similar to Section 9.4 (Foundations) of the Geotechnical Report. ENGEO Response to Comment 20 Noted. Import in building pads is addressed in Response to Comments 13 and 14. Comment 21 Geotechnical Report, Section 7.4 (Reinforcement): What is the purpose of recommending that the continuous footings be designed to structurally span (unsupported?) over a clear (lateral?) distance of 5 feet? Perhaps the purpose of this is to address the potential for secondary ground deformations? If so, this should be stated in this section of the Geotechnical Report. ENGEO Response to Comment 21 This recommendation is to require a minimum amount of reinforcing steel in the footings to allow for spanning localized subgrade irregularities along the footings. Comment 22 Geotechnical Report, Section 7.5 (Foundation Lateral Resistance): Consideration should be given to neglecting the upper 1 foot of subgrade for passive resistance where the subgrade is not protected by asphalt/paving or concrete flatwork.