Question

101/0/2020 RCD3601/101/07202 Question 3 (30 Marks) mate mated A 22 Omm wide double leaf wall in burnt bricks is 2750 mm high and sustains the following loads: Roof dead load: Gk - 2.5 kN/m Roof live load: Ok - 1.5 kN/m Wind load Wk-0.30 kN/m Excentricity on top of the wall e = 20 mm Assuming that the characteristic strengths of the wall in compression and flexure are respectvely 5 MPa and 0.4MPa, check if the wall is safe knowing that the site is poorty managed. The material quality is poor top and there is no construction supervision TOTAL MARKS 100 LA

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Answer 1

solution :- 3) Given that, A 220 mm wide double leaf wall in bunt buricks 38 2750mm high Roof dead load , GTK 2.5 km Roof love load, ak wind load , WK 0.30 KN Im. Ecentricity on top of the wall, e = 20 mm 1.5 kN/m. 220mm Wk 2750 mm = 2.75m moment at wind load 78 lateral load Bending Base Wk. H² m = 0.3 x 2752 2 m = 1.134 kw.m Z

2 » Z bd² 6 here d = 120mm = 0.22m b = 1 m ( taking per m Jun m run of wall) 1.134 J = 1 x 0.222 6 140.578 KNIm? ta 0.lumpal co.umpa (allowable stress safe. Hence Ok To je

(3 bal asial load P = live load + dead load P- 25 +1.5 = UKNIM LP o =P А I le re 20 mm i P + -- im ke F2Commy o roman - comprising 4 + 4x0.02 1x0-22 0.222X1 6 = 18.18 +9.917 28.09 KNIM 0.028 mpal < 5 mpa (a (allowable stressin compression) Hence Ok safe