1. Verdict Possible issues found 2. Step check - Overturning moment (60 x 1.2) | 72 kN.m/m | 72 kN.m/m | OK - Resisting moment (150 x 0.7) | 105 kN.m/m | 195 kN.m/m | Differs - FS (105/72) | 1.46 | 2.71 | Carried Units are consistent at each step (kN/m x m = kN.m/m). 3. Possible issues Issue A - Quoted text: "Resisting moment = 150 x 0.7 = 105 kN.m/m." - Description: The lever arm used for the wall weight is 0.7 m. The known input gives W acting 1.3 m from the toe, with moments taken about the toe. The submitted lever arm differs from the input by 0.6 m. The resisting moment recomputes to 150 x 1.3 = 195 kN.m/m instead of 105 kN.m/m. The submitted FS = 105/72 = 1.46 carries this difference forward; with the given inputs it recomputes to 195/72 = 2.71. - Effect: reported value lower than recomputed - Suggested correction: Use the lever arm of 1.3 m stated in the inputs, or confirm which lever arm applies if the 1.3 m input is itself in doubt. Then recompute the resisting moment and FS. 4. Reasonableness check - Ratio method: FS = (W / Pa) x (lever arm of W / lever arm of Pa) = (150 / 60) x (1.3 / 1.2) = 2.5 x 1.083 = 2.71. This matches the recomputed value and not the submitted 1.46. - Position check: 1.3 m from the toe lies within the 2.0 m base width, so the stated input is geometrically possible. The 0.7 m used in the submission is also within the base width, so the base width alone does not distinguish the two. 5. Assumptions to confirm - No code or required minimum FS was specified, so the computed FS is not compared with any limit. - The submission includes only Pa and W. Any vertical component of earth thrust, soil weight over the heel or toe, passive resistance, surcharge and water pressure are not included. Whether these apply is an open question. - Pa is taken as the total horizontal thrust per metre length of wall, and W as the total wall weight per metre length, both as stated in the inputs. - The 1.3 m lever arm is taken as the horizontal distance from the toe, as stated in the inputs. 6. Suggested corrected calculation - Overturning moment about the toe = 60 x 1.2 = 72 kN.m/m - Resisting moment about the toe = 150 x 1.3 = 195 kN.m/m - FS = 195 / 72 = 2.71 (ratio of resisting to overturning moment, no required value specified) This is an AI-assisted review. It can miss errors and can flag issues that are not real. It is not a design approval. A licensed engineer must verify before use.