A rectangular concrete beam of cross-section 30cm deep and 20cm wide is prestressed by means of 15 wires of 5mm diameter located 6.5cm from the bottom of the beam and 3 wires of diameter 5mm, 2.5cm from top. Assuming the prestressed in the steel as 840N/mm^2, calculate the stresses in N/mm^2 at the extreme fibers of the mid-span section when the beam is supporting its own weight over a span of 6m. If uniformly distributed live load of 6kN/m is imposed, evaluate

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: With a parabolic tendon, the rectangular concrete beam (800×400mm) shown below prestressed, So, it…

A: assumption in PSC-  at any section plane section before bending remain plane after bending.  within…

Q: A pre-tensioned rectangular concrete beam 150 mm wide and 300 mm depth is prestressed with three…

A: Given- A pre-tensioned rectangular concrete beam, Width b= 150 mm, Depth d= 300 mm, Cross-sectional…

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Q: 1. A BEAM WITH WIDTH B=300 MM AND DEPTH D=600 MM IS TO BE PRE-STRESSED. CONSIDERING A 15% PRE-STRESS…

A: Given:- The width of the beam (B) = 300 mm The depth of the beam (D) = 600 mm The pre-stress loss =…

Q: Figure shown below, a simply supported beam and the cross-section at midspan. The beam supports a…

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Q: A floor slab 100 mm thick is cast monolithically with beams 250 mm wide 450 mm deep spaced 1.2 m on…

A: Answer  (1) Calcualtion of Nominal Moment capacity Calculation of Nominal Moment capacity of singly…

Q: 1. The web has a width of 350 mm and the slab thickness and spaced at 6.5 feet center to center of…

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Q: A simply supported rectangular beam has a width of 300mm and the distance to the centroid of…

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Q: shear stress, b) maximum bending stress, and c) maximum compressive stress. P Hinge L.

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

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Q: A concrete beam of rectangular cross-section of 200 mm × 400 mm is prestressed with a force of 400…

A: Given a concrete beam with rectangular cross sectional area. The eccentric prestressing force can be…

Q: A floor sheathing is supported by 75 mm x 250 mm wooden joists of unknown spacing. The joist has an…

A: GIVEN DATA:-⇒Length of joist (L)= 3.75m⇒Floor load (w) = 4.75 kpa⇒Allowable bending stress (σallow)=…

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Q: A RECTANGULAR ALUMINUM BLOCK IS 110mm LONG IN THE X DIRECTION, 70mm WIDE IN THE Y DIRECTION AND 85mm…

A: Given data: Force in X direction = 210 kN compression  Force in Y direction = 170 kN Tension Force…

Q: Problem 2 A composite beam made of steel and concrete has the dimensions and layout shown below.…

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

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Q: A rectangular steel block is 75 mm in the x-direction, 50 mm in the y-direction and 100 mm in the z…

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Q: : Calculate the bending stresses in concrete and steel if f, =345 MPa and the concrete strength fe =…

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Q: A beam with varying load is shown at the figure below. If the beam properties are given, what is the…

A: Given data Beam width b = 288 mm Depth of beam h = 427 mm Prestressing force P = 358 KN Span of beam…

Q: A pre-tensioned rectangular concrete beam 150 mm wide and 300 depth is prestressed with three…

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Q: A concrete beam of rectangular cross-section of size 120 mm x 200 mm is prestressed by a straight…

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Q: Given the following properties of beam: b=250mm, d=325mm and h=400mm a. Assuming the concrete is…

A: Given : b = 250 mm , d = 325 mm and  h = 400 mm Uncracked moment = 25 KN -m 4 - 16 bars To find : 1.…

Q: mm web height = 350 mm

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Q: 1.2m 10 cm 7cm -7cm This concrete beam has four A-35 steel rods of one centimeter diameter and a…

A: Stresses in Concrete Beam : A concrete beam is a load bearing unit which is used to carry both…

Q: A reinforced beam has a: width = 500 mm effective depth = 600 mm n = 9 If the maximum stress of…

A: Given : Width =500mm, effective depth =600mm n=9 Maximum stress in concrete is 5MPa Moment = 80KN-m

Q: A concrete beam of length 5.5m is built monolithically with the slab. Originally, the beam has a…

A: Length of the beam = 5.5 mClear span from adjacent beam = 2.15 mWidth of the beam(web), bw = 300…

Q: A concrete floor slab 100 mm thick is cast monolithic with concrete beams 2.0 m on centers. The…

A: Answer  Slab hf = 100 mm Clear distance to the next web = 2 m Beam span = 4 m web width bw = 250 mm…

Q: Only compute the I, where the formula is; I=bh² / 12

A: To compute the moment of inertia of the given section.   From the given figure, Width of the section…

Q: Question For a given loading on a rectangular plain concrete beam with an overall depth of 500 mm,…

A: Given- Overall depth of rectangular concrete beam = 500 mm=0.500 m Compressive strain and tensile…

Q: Problem 6.4 - Determine a) the magnitude and location of the resultant of the distributed load, and…

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Properties of materials

A property of a material describes its characteristics and distinguishes it from the others. The material properties are described it in terms of its hardness, color, appearances, and so on. The material properties generally depend on the type of material, or whether it is a metal or an alloy. There are different kinds of material properties such as mechanical properties, thermal properties, physical properties, and chemical properties. Chemical properties describe the material in terms of a chemical change. The mechanical properties come into existence when the material is acted upon by an external load. Thermal properties are associated with the temperature of the material and specific heat.