Required reinforcement: ( d = 1500 - 70 = 1430 , mm ) ( K = M/(b d^2 f_ck) = 635e6 / (1000 \times 1430^2 \times 30) = 0.0104 ) → very low → minimum reinforcement governs.
The overturning moment caused by the long jib and the weight of the load being lifted at a specific radius. tower crane foundation design calculation example link
sigma equals the fraction with numerator cap P and denominator cap A end-fraction plus or minus the fraction with numerator cap M and denominator cap Z end-fraction is the base area and is the section modulus). ResearchGate D. Structural Design (Rebar & Shear) Calculate the required steel area ( cap A sub s ) based on factored moments ( cap M sub u Punching Shear: Required reinforcement: ( d = 1500 - 70
$N_Ed = 1.35 \times (907.5 + 150) + 1.35 \times 400 = 1,428 + 540 = 1,968 \text kN$. ResearchGate D
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