H-W.2 A boneled Prestrass Concrete beamoas shouwn in fiqure belau. It is Stresseol-Csing nwires of fo =Y900 MPa8foy1520-Mpa, f= 35 MPa What is the dlesigno flaxual-stapyth (rMu)?
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- QA Fora flow rate of 300 iter/second ata velocity of 1.3 meters/secand, design a seamless. steel Take factor of safety of 2.5, Longitudinal efficiency ofjoint, 1 = 0.50, and intesnal pressure= 4 Nl9 CE122 Anser plsssA W1422 acts compositely with a 4-inch-thick floor slab whose effective width b is 90 inches. The beams are spaced at 7 feet 6 inches, and the span length is 30 feet. The superimposed loads are as follows: construction load = 20 psf, partition load = 10 psf, weight of ceiling and light fixtures = 5 psf, and live load = 60 psf, A992 steel is used, and fc=4 ksi. Determine whether the flexural strength is adequate. a. Use LRFD. b. Use ASD.
- Galy The homogeneous, Onal) ol aubddll JSAN ) 250-kg triangular B S ghg aaS Yo AllS A, plate shown s .(C) sie Ay (A?a.ifi ilaia supported by a pin at A and a roller at C. Draw the free- body diagram of the plat. & [T R s 3.4 e el 3 SA bolted connection between a vertical column and adiagonal brace is shown in the figure below. Theconnection consists of three 5/8-in. bolts that join two 1/4-in.end plates welded to the brace and a 5/8-in. gusset platewelded to the column. The compressive load P carried bythe brace equals 8.0k.Determine the following quantities: (a) The averageshear stress τavein the bolts, and (b) the average bearingstress σbbetween the gusset plate and the bolts. (Disregardfriction between the plates.)Reinforced And Prestressed Concrete Instructions: Solve all problems completely. If assumptions are made, verify if the assumption are correct. No verification of assumption leads to loss of points. PROBLEM: A reinforced rectangular beam with width b and effective depth d has 4.16 mm bars placed on 1 layer at the tension side. The beam has a stirrup with a diameter of 10 mm. Use fc=28 Mpa and fy=420 MPa GIVEN: b= 197.5 mm d= 317.5mm L= 2.7 m Wd = 13.75 kN/m WL = 17.75 kN/m Calculate the nominal moment capacity of the beam Calculate that strain of the tension bars. Calculate the strength reduction factor of the beam
- A 2.75-m-diamter wood-stave pipe has 9m3/s of water entering through a horizontal 30-degreesreducing bend where the other end is 1.82 m indiameter. The curved portion is made of steel plate toresist rupture and the bend is embedded in concreteblock weighing 2400 kg/m3. The pressure at entranceof the bend is 138 kPa. The combined weight of thebend and its content is 268 kN. Neglecting friction inthe flow, compute the minimum volume of concreteblock holding the bend that can withstand the thrust ofwater on the bend assuming the coefficient of frictionbetween the concrete and its foundation is 0.30.Concrete Technology/Prctical part.A simply supported one way reinforced concrete floor slab has a spanof 3 m. It carries a service live load of 8.4 kPa and a service dead loadof 1.2 kPa. fc’ = 20.7 MPa, fy = 414.6 MPa. Use steel covering of 25 mmmeasure from center of bars. Calculate the spacing of the 12 mm øshrinkage and temperature bars for minimum thickness of slab.
- Design economical spacing of 10 mm diameter stirrups for the beam which carries the loads shown. Design shear reinforcement of prestressed beam with the following properties listed. Properties: f^c=28 MPa fy = 276MPa Aps = 800 mm² Ds = 10mm Dm = 18mm fse = 800 MPa fpu = 1500 MPa fpe = 860 MPa Pe = 250kNconcrete : C20 steel: S420 h=550 mm b=350mm steel rebars : 5Φ18USE NSCP 2010 A simply supported one way reinforced concrete floor slab has a spanof 3 m. It carries a service live load of 8.4 kPa and a service dead loadof 1.2 kPa. fc’ = 20.7 MPa, fy = 414.6 MPa. Use steel covering of 25 mmmeasure from center of bars. Calculate the spacing of the 12 mm øshrinkage and temperature bars for minimum thickness of slab.