An RC (f'c=21 MPa) rectangular beam has a width of 260mm and an overall depth of 470mm. The concrete clear cover is 40mm, the stirrup size is 10mm, and the size of the longitudinal reinforcement is 20mm. Steel yield strength for both the flexure and shear bars is 415MPa. Determine the design shear strength (kN) of the section if the spacing of the shear reinforcement is 50mm.

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feu = 40 MPa Cover = 3smm fy = 500 MPa fy = 250 MPa Preferred link size = 10mm Question 2 Design the reinforcement for the following one-way slab: Slab thickness,h= %3D 160 mm Design Mid-span Moment, M = 35 kNm Preferred bar sizes = main bar: 12mm; distribution bar: 10mm Q2a. Calculate the steel area required (in mm2per m width). Q2b. Provide main bars and distribution bars.

a simply supported beam 300mm wide, 500mm deep and spans 5.7m supports a service super imposed dead load of 8kN/m and service live load of 7kN/m. concrete strength f'c=21MPa and steel yield strength fy=415MPa. concrete cover to bar centroid is 70mm. determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015.

30" Design the reinforcement for the T-beam in the middle which carries a live load of 200 lb/ft². The length of the beam is 25 ft. In your design assume concrete with a compressive strength of 3,000 psi density 150 lb/ft³ and Grade 60 Steel. 27" 12" 10'-0" 12" 10'-0" 12"

Problem: Using WSD & USD, design the midspan reinforcement of stringer (B-3) for the second floor of a 3-storey residential building shown below. Use 20.7MPa compressive strength of concrete @ 28-days and grade 40 reinforcing bars. Use Ye= 24.5 KN/m³. Design the stringer as rectangular beam. Assume simply supported. 450mm 250mm 250mm 450mm, Superimposed Deadloads = 2.70 KPa Stirrups = 10mmo Main bar = 25mm 350mm B-4 STAIRWELL B-1 250x400mm S-3 B-3 250x400mm S-4 (3000) mm 350mm B-4 350mml Stringer Section (2000) mm (3500) mm (2000) mm 700mm

Combined Stresses Given Hollow Steel Section (HSS) that is 4"x6" and 1/2" thick, with axial and transverse loading shown, determine the total normal stress at a. The 5k load on the bottom of the beam b. At the mid-span in the middle of the beam C. At the 10k load on top of the beam 5k 10k A 5' 10' 5' B CENTROID 4" 5 k 3k 8k 6" 2' 6.25k 8.75k +6.25k SECTION +1.25k 'V" -8.75k +43.75k-ft. +31.25k-ft. 'M' 8k 5 k + tension P = Ok %3D

5. The beam shown is reinforced for positive moment with three epoxy-coated #11 bars. The bars terminate at the center of the supports. Neglecting beam weight (concentrated loads are very heavy), determine if the required development length is satisfied. Assume As required = 4.55in², 2 in. clear cover on all sides of the longitudinal reinforcement, normal weight concrete, #3 stirrups @12 in o.c., f'c = 5000 psi and fy = 60,000 psi. 8 ft | Pu 20 ft Pu 8 ft ge2 of 56 30 in b=14in. ed 5/15/2020 As = 3-#11

1. A two span beam subjected to shear and flexure only is reinforced as follows: SECTION: TOP BARS @ MIDSPAN: 2-⌀20mm @ FACE OF SUPPORTS: 5-⌀20mm SECTION: BOTTOM BARS @ MIDSPAN: 3-⌀20 mm @ FACE IF SUPPORTS: 2-⌀20 mm Given: Stirrup diameter, ds = 10 mm Concrete f'c = 21 MPa Steel rebar fy = 415 MPa Stirrup fy = 275 MPa Beam size b x h = 270 mm x 450 mm Assume all bars laid out in single layer. Calculate the following: a. Design Moment strength of section at midspan for positive bending = ______ kN·m (nearest whole number)

QUESTION 1A concrete floor slab measuring 6 m x 3 m is simply supported on one side brick load-bearing walls along the 6 m sides. The concrete slab is 200 mm thick and reinforced at the bottom as follows. a. Main reinforcement (short span i.e the bars are parallel to the short span), Y12, shape code 34 @ 125 mm centre to centre,b. Distribution reinforcement (long-span i.e the bars are parallel to the long span), Y 10, shape code 20 @ 300 mm centre to centre,c. Concrete cover, 30mm,d. Concrete strength, 40MPa. Draw the reinforcement layout for this slab, in plan and section, indicating all thereinforcement and necessary information required by the contractor. Calculate and indicate the number of bars required on your drawing. You do not need to calculate the bar lengths and the curtailment. Neat drawing please