Tiêu đề RCD Foundation and PCD Lecture Notes.pdf ✅

KIPPAP REFRESHER 18 PSAD - REINFORCED CONCRETE DESIGN • REINFORCED CONCRETE FOOTINGS • PRESTRESSED CONCRETE DESIGN ENGR. KING JUSTINE H. GUARDARIO TOP 8 - APRIL 2023 CELE mmmmmmmmmmmmmmm 24


Situation 1 The pile footing supports a column of 600 mm x 600 mm at the center. The piles are precast concrete with 350 mm x 350 mm dimension. Given: Net load on the footing at Ultimate Condition. Pu = 2700 Kn Mux = 108 kN-m Muy = 165 kN-m Effective depth of the footing = 400mm Dimensions: a = 0.6 m c = 1.2 m b = 1 m d = 0.6 m Strength Reduction Factor Φ (shear) = 0.75 ; Φ (moment) = 0.90 KJHG 2. Determine the punching shear stress (MPa) of the column due to axial load. a. 2.0 b. 1.5 c. 3.0 d. 2.5 0.6 0.6 0.6 0.6 1.0 1.0 1.2 1.2 3.6 3.2 es Pu 2 = 2400 (103) ↑ Vu N 0. 75(4000)(400) ↑ Rup Un = 2. 0 MPC Yu + Rup = Pu Yu = Pu-Rup Vu = 2700kN-300 kN Yu = 2400 kN Un= bo = 4(600 + 400) 30 = 4000 mm