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625 Cypress Avenue <br />Geotechnical Investigation <br /> <br />Project No. W1895-88-01 - 29 - April 23, 2024 <br />7.11.5 A qualified engineer should be retained to review and prepare a shoring plan in accordance <br />with the shoring manufacture’s specifications. <br /> <br />7.11.6 Additional pressure should be added for a surcharge condition due to sloping ground, <br />vehicular traffic or adjacent structures and should be designed for each condition as the <br />project progresses. <br />7.11.7 It is recommended that line-load surcharges from adjacent wall footings, use horizontal <br />pressures generated from NAV-FAC DM 7.2. The governing equations are: <br /> 𝐹𝐹𝐹𝐹𝐹𝐹 π‘₯π‘₯𝐻𝐻�≀0.4 𝜎𝜎𝐻𝐻(𝑧𝑧)=0.20 × οΏ½π‘§π‘§π»π»οΏ½οΏ½0.16 +�𝑧𝑧𝐻𝐻�2 οΏ½2 × π‘„π‘„πΏπΏπ»π» <br />and 𝐹𝐹𝐹𝐹𝐹𝐹 π‘₯π‘₯𝐻𝐻�>0.4 <br />𝜎𝜎𝐻𝐻(𝑧𝑧)=1.28 × οΏ½π‘₯π‘₯𝐻𝐻�2 × οΏ½π‘§π‘§π»π»οΏ½οΏ½οΏ½π‘₯π‘₯𝐻𝐻�2 +�𝑧𝑧𝐻𝐻�2οΏ½2 × π‘„π‘„πΏπΏπ»π» <br /> <br /> where x is the distance from the face of the excavation or wall to the vertical line-load, H is <br />the distance from the bottom of the footing to the bottom of excavation or wall, z is the <br />depth at which the horizontal pressure is desired, QL is the vertical line-load and ΟƒH(z) is the <br />horizontal pressure at depth z. <br /> <br /> <br /> <br /> <br />