ENCI 595 Lecture 5: ENCI 595 05 - L5

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1 is angle of inclination of diagonal compressive stresses, and is from: 1=(cid:884)9+(cid:889)000(cid:3051) caluclated using either: the simplified method, general method: and the required capacity from shear reinforcement is: therefore the required area/spacing of shear reinforcement can be determined from: spacing limitations are: Relevant clause: 11. 3. 6 applies to beams with d > 400 mm and distance from zero shear to face of support is less than 2d. Beams with deep shear spans can be designed using the previously outlined method, or by accounting for additional shear strength due to the formation of compressive struts and tension ties. If the second method is used, crack control must be provided. Dl = 10 kn/m , ll = 25 kn/m. Normal density concrete block and grout, fully grouted 200 mm blockwork, d = 850 mm, f"m = 14 mpa, fy = 400 mpa. Assume the flexural reinforcement design is complete, design the shear reinforcement.

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