Design Problem 1 & 2Determine the cracking moment for the prestressed beam section shown if f'c = 35 MPa. Use a modular rupture of frAssume normal weight concrete.= 0.621√ f'cC = 100 mmb₁ = 350 mmD = 125 mmd = 440 mmh = 500mmb₂ = 200 mmFigure 1.0Cc 60 mmC-150 mmh, 250 mmb₁ = 250 mmb. =350 mmFigure 2.0d 630 mm h = 700mmCe 70 mm

To determine the cracking moment for the prestressed beam sections shown in the figures, we need to…

Answered: Design Problem 1 & 2 Determine the…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Number 1 (parts i, ii, iii) please :)
Q: Abeam with rectangular cross-section of (300 x600).mm dimensions, reinforced with 4 bars of 20 mm. The concrete in compression Zone arrived the fracture (Ecu=0.003). The yielding stress of the rebar is 420 NImm?. f- 28 NImm?. Assume linear distribution for strains. %3D ナ Concrete couer is 40 mm. Find :- 1) The strain ia steel reinforcing bars. 2) The positionof neutral axis from the top of the beam (Cdistance). 3) Are reinforcement bars yield or not ? 4) The position of neutral axis from the top in case of balanced failure. 5) Is the beam under, over or balanced reinforcement ? 6) The compression force in cancrete. 7) The tensile force in steel reinforcing bars 8) Check the spacing between longitudiaal bars according to ACI requirements, with sketch.
A group of concrete cubes mixed with different water ratios .. The group with water ratio W / c = 0.3The maximum load was testedFailure causes every cube in the group Required:1- Finding the stress rate for each group in unit N / mm2 with discussing the results and the effect of the water w / c ratio on the compressive strength of the group.
A rectangular beam has the following properties. Assume 12 mm stirrups. Assume a single layer of reinforcements. Calculate Mu. Given: Width of the beam, = 300 mm Over-all depth, h = 425 mm Tension reinforcements = 5 pcs 28 mm dia Comp reinforcements = 4 pcs 20 mm dia Specified strength of concrete, f'c = 28 Мра Steel yield strength, fy = 345 MPа Note: Round off your final answer in 3 decimal places. No need to type the units.
Calculate the uniform load w (in addition to the beam weight) that will cause the section shown to begin to crack if used as a 28-ft simply supported beam. Use normal weight concrete with L=4000 psi. f = 60,000 psi, E₁=29,000 ksi, and the reinforced concrete weight = 150 lb/ft³. 4 in. 28 ft 4 in. 22 in. 30 in. 2 in. 2 in. 3 #9 ● ||—12 in—-|
Given the concrete (f c=6000 psi) I-beam shown in Figure 1 for the given loading: -draw the shear & moment diagrams -determine Vmax & Mmax -using ASD (Allowable Stress Design) method, check to see if the given loading produces stresses within the given allowable range (check both Omax & Vmax) Using ACI 318-99, allowable stresses are -for flexure, f = .45f'c -for shear, v. = 1.1√f. (HINTS: 8² -note that the beam is symmetric about both axes -Ix for a triangle is (1/36)bh³+Ad² ) 30 kips 16' 10 kip/ft 22' 20 kips 3'-4' -1-6 -1'-6" Figure 1 1'-
A simply supported beam 6.5m long, 350mmx500mm, prestressed with a straight tendon located 150mm below the neutral axis with effective prestressing force, Pe, of 300kN. Total load carried by the beam is 20kN/m. A. Determine the area of the concrete, mm2.B. Determine the section modulus of the concrete in x10^3 mm^3C. Determine the compressive stress caused by the tendon alone if Pe is at the centroid, MPa
Plz
Concrete re in orced a enially with eight steel column bars as shown in Fig. Each bar has diametes of 25 mm It opplied load 4 KN, compute the is 180 Gpa and 3. materi al. Es Stress developed in Ec = 12 Gpa. each 500mm %3D 500mm in
Determine the values of the distance cfrom the extreme concrete corppression fibers to the neutral axis, andr, for the beam shown in the following Figure fy 60,000 psi and fc 3000 psi. 0.003 21 in d-c 389 bars 3.00 in) = (0.003) 12 in Select one: a. 6.90 in, 0.0061 b. 6.25 in, 0.0069 c. 7.50 in, 0.0085 d.5.93 in, 0.0076
Determine the cracking moment (KN/M) and the compressive stress felt by concrete (MPa). Show your step by step answer with solution
PLEASE SOLVE AND BOX ALL FINAL A LITTLE CONFUSED

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