A 350mm x 600mm prestressed beam has a simple span of 20m. The beam uses stress relieved tendons with specified tensile strength f pu = 1862 MPa and an effective stress in prestressed reinforcement after allowance for all prestress losses f se = 1100 MPa. The area of prestress reinforcement in tension zone is A ps = 1800mm 2 applied 90mm above the bottom of the beam and fc’ = 35 MPa. a. Determine the reinforcement indices for the prestressed beam if it is not to be grouted (unbonded) after the application of the prestress. b. Determine the reinforcement indices for the prestressed beam if it uses bonded tendons. c. The safe ultimate moment capacity of the beam d. The safe live load that the prestress beam could carry.

Q: Find the nominal moment strength capacity of the beam. (kN.m)

A:

Q: Determine the type and magnitude of the stress in a fiber 20 mm from the top of the beam at a…

A: Moment at 1m from the left endM=-2.5×1×12=-1.25kN-m

Q: AW360 x 72 standard steel shape is used to support the loads shown on the beam in Figure A. The…

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Q: (d) Check the minimum steel requirements A, criteria 1 = min in? A min criteria 2 = in? in?…

A:

Q: art A The assembly consists of two posts AD and CF made of A-36 steel and having a cross-sectional…

A: Given :

Q: a) For the rectangular section shown below the maximum allowable tensile stress in the concrete Fct…

A: Answer  Calculation of Maximum Moment We know from bending equation that the Maximum tensile stress…

Q: L25 KN 8 KN/m Dimension of rectangular section %3D 400 x 650 mm Initial Prestressing force = 380 kN…

A: Eccentricity (e) =150 mm Ytop=ybottom= 640/2 =320mm KNm= 1000000 Nmm Sign convention Compressive = +…

Q: NWC M= 50 ft.

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Q: In a steel flat plate a state of plane stress available. Calculate o, and principal stresse o, -140…

A:

Q: 2. A wood beam carries the loading shown in the figure. Determine the smallest allowable width b of…

A: Given working stress in bending is 10MPa

Q: 0,3in 0.4in2 3P 2P + C. Find the albwable säfe p if the stresses in the bar are the following: AB 50…

A:

Q: A bracket has been loaded as shown in figure. Compute the top and bottom fibre stress at section…

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Q: Beam AZ, 2 in wide and 4 in high, is subjected to a loading condition as shown. Determine: a. the…

A:

Q: A one-way single-span reinforced concrete slab has a simple span of 4 m and carries a live load of…

A:

Q: (3) for Normal weight Concrete, using ACI Code and recommendation for high strength concrete, to…

A: Solving first questionGiven datacompressive strength of concrete given in table findmodulus of…

Q: Show all solutions a. height of the neutral axis up to the outermost fiber of compression concrete…

A:

Q: QI: Find the normal stresses at sections A-A, B-B, C-C, and, D-D for the body as shown in figure…

A: As per guidelines we are supposed to answer only first question

Q: Draw the V&M diagrams and calculate the largest permissible value of P for the beam and loading…

A: Allowable normal stress in tension=-80MPa Allowable normal stress in Compression=-140MPa To find…

Q: A composite bar is rigidly attached to the wall at A as shown. Axial loads are applied at the…

A:

Q: 3. The balance failure in the calculation of the bearing capacity of the nomal section of the…

A: Option B is correct Balanced section is the one in which the failure of steel and concrete occur at…

Q: A rectangular beam has a width of 300 mm, and effective depth d=570 mm to centroid of tension steel…

A:

Q: An isolated T-beam is composed of a flange 700 mm wide and 175 mm deep cast monolithically with a…

A:

Q: two steel plates are bolted to the wooden beam shown by 30-mm-diameter bolts spaced at 200 mm.…

A: Find modular ratio:n=EwEs=40200=15so,Reduced width of wood =1505=30mmFInd…

Q: A rectangular beam has a width of 258mm and an effective depth of 600mm. It is reinforced with…

A: To find : depth of concrete stress block

Q: Design the slab reinforcement if the maximum positive moment is Mup=wul2/11 . and the maximum…

A: Given: length = 6m span = 2m Wu= 8.572 kPa Slab thickness = 150 mm f'c = 28 MPa fy= 219 MPa main bar…

Q: A composite beam is constructed using a steelplate (13 mm × 150 mm) with two wood beams (75 mm ×150…

A: Given data: Mz=6.75 kN.m

Q: A steel loop ABCD is placed around a 1.0 in. diameter aluminum rod AC. Cables BE and DF, each of 0.5…

A: D = 1 in d = 0.5 in 13 ksi

Q: Design the slab reinforcement if the maximum positive moment is Mup= wul2/11 and the maximum…

A: DL=4.76 kPaLL=1.9 kPaweight of slab=3.45 kPawu=1.2DL+1.6LL=1.24.76+3.45+1.61.9=12.892 kPaMaximum…

Q: The wood beam has a square cross section. Find the smallest allowable cross-sectional dimensions if…

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Q: he T-beam has the following properties:  flange thickness = 110 mm flange width = 700 mm web…

A:

Q: Q4/ The stress distribution in reinforced concrete slab for flexure : cases is assumed as triangular…

A: The stress distribution in reinforced slab for flexure according to yield line theory.  Plastic…

Q: Calculate the shear stress in MPa at section B A 100 mm F=10LN 10 mm

A: Find, Shear stress at section B

Q: Find the minimum required area of the steel bearing plate so that the stresses are not exceeded.

A: P=10000lb

Q: 500 mm B 500 mm- 2000 mm 1000 kN 200 mm- Section AB 200 mm

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Q: The block is subjected to a triaxial loading as shown. If v = 0.30 and E = 29 x 106 psi, determine…

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Q: mm web height = 350 mm

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Q: d. stress in the steel bars; e. deformation of the concrete post

A: Given  Load Cross sectional area  Modulus of Elasticity  Required  d. stress in the steel bars;e.…

Q: What is the axial stress in the bronze rod (in MPa)? 2m 3m G0 KN Ismm IS mm banze rod

A:

Q: In a steel flat plate a state of plane stress available. Calculate o, and principal stresse

A:

Q: A beam cast monolithically has the following properties: bf=1200mm, t or hf = 110mm, bw=380mm and…

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Q: 5 4 all 5 4 #9 4 24- 16" £3" ft-k fé = 3 ksi M = 90 NWC. The section is cracked. Computer the…

A:

Pricing Concrete Work

The concrete work in a project usually holds a high-end cost in terms of cost and value of the work. It becomes an important step in calculating the cost associated with concrete while preparing the project scale. The cost of making concrete depends on the cost of building materials, mixed materials, labor, and machinery. A concrete contractor builds structures from concrete, usually managing all the steps of the process from assembling ingredients to building a holding structure and preparing the mixture. This person or team oversees the delivery and unloading of goods to ensure that they are done properly. Nowadays, most of the concrete in the United States comes from manufacturers working abroad, usually with branches and plants within the provinces. Contributions can range from pre-mixed concrete to basic ingredients, the consumer company then mixes it. Many American-based concrete companies, however, offer concrete products, such as ballads, bricks, countertop, concrete pipe, and building products, as well as concrete construction and installation materials. This article covers both types of suppliers for this set of building materials.