A reinforced concrete shear wall with special ductile detailing; there are many columns that carry gravity loads. Determine the R-value for this system.

Estimate the Slab reinforcement for the given figure below. All the straight bottom bars are 10mm@400mm c/c. All offset bars 12mm@400mm c/c, All Additional Top bars 12mm@400mm c/c. The slab thickness is 150mm. Assume cover is 25mm & wall thickness is 200mm. Note: 1-Standard bar hook-(12db+4db) with bend. Answer should be made such as table below from bar No.1 to bar No.8 Bar No. Length (m) Weight(Kg) -4.70m- 2 opening (7) (4) 3.70m 400mm 8 6 Determine quantity of Steel in Kg for the Circular Sky-light in the figure above. Determine quantity of items below for given roof Figure above Concreter rate (1:1.5:3). y sand= 1835 kg/m³, y gravel = 2200 kg/m³ Item Unit Quantity Cement m3 Sand ton Gravel m3

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"

design of singly reinforced concrete beam design the reinforcement. fc' = 28 MPa fy = 414 MPa WD = 4 kN/m (including beam weight) WL = 2 kN/m b=200mm d=400mm length of beam = 5m USE NCSP 2015 specifications. complete assumptions and details. no shortcut. step to step please.

Subject is reinforced concrete design please show all steps and solve all parts thank you

1. A rectangular beam section is 10 in. wide and has a structural depth of 13.5 in. Reinforcement consists of two No. 8 bars. Given that the strength normalweight concrete is 4000 psi and there is NO shear reinforcement in the section, determine the nominal shear capacity allowed by the ACI Code. (5 pt) (Hint: No web reinforcement, so Vc = 8λ¸λ(pw)¹/³¸ √ Fcbw d cbwd shall be used).

4.3 A simply supported beam is reinforced with 5-ϕ25 mm at the bottom and 2-ϕ20 mm at the top of the beam. Concrete covering to centroid of reinforcement is 70 mm at the top and 64 mm at the bottom of the beam. The beam has a gross depth of 450 mm and gross width of 300 mm. fc’= 28 MPa, fy = 415 MPa.  Assume bars laid out in single layer. Calculate the following if the limiting tensile steel strain is 0.004 for a ductile failure: Calculate: Maximum service uniform live load over the entire span in addition to a DL = 20 kN/m (including the weight of the beam) if it has a span of 6 m =  _____?____  kN/m (to the 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