6-121 A wood beam is reinforced with steel straps at its top and bottom as shown. Determine the maximum bending stress developed in the wood and steel if the beam is sub- jected to a bending moment of M 5 kN m. Sketch the stress distribution acting over the cross section. Take E,, = 11 GPa, Est 200 GPa. 20 mm 300 mm -M = 5 kN-m 200 mm Prob. 6-121 20 mm

Given: Mmax= 15.625 kN-m Vmax= 12.5 kN Depth of the beam= 250 mm 1. A simply supported 5 meter timber beam carries a 5 kN/m uniformly distributed load. If the beam's Ix is 260.4166 x 10^6 mm^4 and fb = 7.50 MPa, what is the base of the beam? a) 150 mm b) 180 mm c) 200 mm d) 220 mm 2. The shear stress fv developed for the beam of question 1 is a) 0.375 MPa b) 0.50 MPa c) 0.75 MPa d) 0.85 MPa

A rectangular reinforced concrete beam 325 x 550 mm (b x d) is provided with 3H25 bar (As = 1473 mm2) as compression steel. Determine the area of tension steel needed for the beam to attain its full moment capacity. Calculate the corresponding ultimate moment of resistance.  Assume fck = 30 N/mm2and  fyk = 500 N/mm2and d’ = 55mm.                                                                                                                                  Take until 2 decimal point for each calculation.   Notes :                          Internal forces                          Fcc = 0.567fck(b x 0.8x) = 0.454 fck bx                          Fst = 0.87 fyk As                            Moment of resistance with respect to steel,                          M = Fcc.z                            Moment of resistance with respect to concrete,                          M = Fst.z                                                   Mbal = Kbal fck bd2 where Kbal = 0.167…

Calculate and draw the internal forces created at H section of the bracket beam? a = 500 mm b= 200 mm Px= 15 Kn Py=0 Kn Pz = 10 Kn

36 -Loading status in figure q= 4 kN ⁄ m, P = 48 kN in the bar dimensions L= 2 m and e= 0.5 m. The cross-sectional effects at point E will be calculated. A is fixed, B is sliding joint bearing. Accordingly, By=? a) 0B) 48C) 24D) NoneE) 14

A square, tied column 410 mm wide is reinforced with 4 25-mm-diameter vertical bars with fy = 420 MPa enclosed in 10-mm-dia. ties.  Using f'c = 25 MPa, calculate the nominal axial strength at balanced condition in kN with bending about the x axis.  Write your answer with 2 decimal places only. Correct Answer:  1,513.80 ± 1.5

For the triangular beam with base b= 400mm and d=540mm determine the area of the compression stress block (shaded in green) if a=210mm. Assume d'=60mm. Ans in mm2. Do not write the units in your answer.

A continuous beam ABC has fixed supports. Constant value of El and using slope deflection method.  What is the moment MAB in KN-m? 2 decimal places

H.W The uniform thin pole has a weight of 50 N and a length of 26m. If it is placed against the rough wall and on the rough box in the position d= 10 m, us =0.3 at points A, B and C P= 150 N Box weight= 100N Determine the distanice x when the motion of the pole impend

3.) For the given couple-force system shown, determine the horizontal component of Q. P= 335 KN Q= 44 KN R=74 KN-m Z=263 KN