4. A square column foundation is to be constructed on a sandy soil layer. Knowing that: a. that the allowable load Q will be inclined at an angle at an angle of 15° with the vertical. b. The standard penetration numbers N60 obtained from the field are Depth [m] a 159 N60 2 5 4 8 1 m 6 9 8 8 10 9 Determine Q. Use FS = 2.5, and Meyerhof's equation. 1.5 m c = 5 kPa y = 17 kN/m³

Use Virtual work method Find the following; B (a) Rotation at C A (b) Horizontal displacement at C 12' 8 EI = Constant

Apply de'Moivre's theorem or otherwise to solve for Zo and C from these expressions given below: ZO-Z/Y and C=Z*Y Where: .Z is a complex number. • Y is also a complex number. • Re (Z0) >0 and Re (C) >0 Find Z0 and C when: Z=1+5j,Y=1-3j

PROBLEM # 3: Use the conjugate beam method and determine the slope at B and the displacement at C of the beam. "EI" is constant. 2 A В a a a a