2.15 Compare the following three roof structures. All three have the same span length and the same total roof load. Calculate the maximum bending moment at the main (bottom) beam. The beam has a rectangular cross-section measuring 8-inch wide by 12-inch deep. Determine the maximum bending stress for all three cases for this beam. Calculate the Section Modulus of the beam, S: Calculate the maximum bend stress for Case 1: Simple supported beam with uniformly distributed load BBBBH Uniformly distributed total load = 2400 lbs 24 ft

2.15 Compare the following three roof structures. All three have the same span length and the same total roof load. Calculate the maximum bending moment at the main (bottom) beam. The beam has a rectangular cross-section measuring 8-inch wide by 12-inch deep. Determine the maximum bending stress for all three cases for this beam. Calculate the Section Modulus of the beam, S: Calculate the maximum bend stress for Case 1: Simple supported beam with uniformly distributed load BBBBH Uniformly distributed total load = 2400 lbs 24 ft

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A rectangular beam has a width of 380 mm, effective depth of 445 mm, and overall depth of 510 mm and is reinforced with four No.29 tension bars. The concrete modulus of rupture fr = 3.65 MPa. The elastic modulus of the concrete and steel are, respectively, Ec =27,800 MPa and Es= 200,000 MPa. Determine if the beam will show hairline cracks due to a bending moment M = 108 kN-m and compute the relevant stresses. Provide material properties for concrete and reinforcing steel used in your design.
il Engineering Dept. /Second Year "Strength of Materials" Home Works: A flat steel bar has axial loads (forces along the centroidal axis of the bar) applied at points A, B, C, and D, as shown in Fig. a. If the bar has a cross-sectional area of 3.00 in.², determine the normal stress in the bar (a) On a cross section 20 in. to the right of point A. (b) On a cross section 20 in. to the right of point B. (c) On a cross section 20 in. to the right of point C. Figure (a) 81 kip 30 in. 45 in. OA BOC 18 kip 54 kip 40 in. (a) Do Prof. Dr. Qais Fadhil 45 kip
A simply supported beam carries a concentrated load at the center which fluctuates from a value of W to 4 W. The span of the beam is 470 mm and its cross-section is circular with a diameter of 57 mm. Take ultimate stress of beam material as 683 MPa, Yield stress as 0.55 times ultimate stress and the endurance strength as 0.45 times the value of ultimate stress and take a factor of safety of 1.5. Calculate the maximum value of "W", if the variable stress induced in the beam is 109 N/mm?. Using Goodman relation calculate the value of mean stress in N/mm?. **Note: Please upload your handwritten working/solution to the link provided. Maximum Bending Moment Minimum Bending Moment Mean Bending Moment Variable Bending Moment Section Modulus, Z mm3 The value of Load "W". in N The value of Mean stress using Goodman relation ..
A 62.6-kN vertical load P is applied at the corner of the square cross section of the steel compression member AB, which is free at its top A and fixed at its base B. Knowing that for the grade of steel used oy=345 MPa and E= 200 GPa, and using the allowable-stress method, determine the smallest allowable dimension d. B D 1.5 m The smallest allowable dimension dis mm.
Determine the slenderness ratio of the section.Determine the elastic buckling stress of the section.Determine the critical stress of the section.Determine the allowable strength of the section.Determine the design strength of the section.
a.what is the maximum bending stress fbx (MPa) in the girder b.determine the maximum bending stress fby (MPa) in the girder c.using interaction formula fbx/Fbx + fby/Fby
A reinforced concrete beam is shown in the figure below. 0.75-in, diameter rods Wo 20 in. 2.5 in. 8 ft- 8 ft 10 in. Part A Determine the maximum uniform distributed load wn that can be supported by the reinforced concrete beam if the allowable tensile stress for the steel is (Ost )allow = 30 ksi and the allowable compressive stress for the concrete is (oconc )allow = 3 ksi . Assume the concrete cannot support a tensile stress. Take Est = 29(10) ksi , Econe = 3.6(103) ksi Express your answer to three significant figures.
Problem 5.23 With f, = 60,000 psi and f = 4000 psi, select the reinforcing for T beam AB for the floor system shown. Assume simple supports at A and B. The live load is to be 100 psf, while the dead load in addition to the concrete's weight is to be 80 psf. Concrete is assumed to weigh 150 lb/ft. The slab is 4 in. thick, d is 24 in., and b, is 16 in. (Ans. 3.84 in.², use 4 #9 bars) edge L. beam 5 ft 1 B T beams -4 @ 10 ft=40 ft- 5 ft 30 ft
Question 3 of 5 -/ 20 E View Policies Current Attempt in Progress A steel [E = 200 GPa] bar (1) supports beam AB. The cross-sectional area of the bar is 580 mm2. If the stress in the bar must not exceed 330 MPa and the maximum deformation in the bar must not exceed 13 mm, determine the maximum load P that may be supported by this structure. Use dimensions of a = 4 m, b 2.4 m, and c = 5.2 m. %3! C (1) a Answer: kN P = Attempts: 0 of 1 used Sub Save for Later B.
The following are properties of the reinforced concrete beam shown, f, = 60,000 psi and Sc = 4,000 psi . Determine the distance from the top 12 in 3 in. of the beam the centroid of the effective area of the concrete subjected to the compressive stress 0.85 f. . 27 in. 33 in 30 in. 4 #11 3 in. 18 in. O 3.47 in. O 7.43 in. 4.73 in. O 3.74 in.
The tower in Figure 1 is subjected to three compressive forces 4kN, 5kN, 6kN at joints G, E and C respectively. Calculate the stresses in MPa in members AC, CE and FD if the cross sectional area of each member is 2000mm2. Indicate if it is a tensile or compressive stress.
A pipe column is braced to prevent bending and buckling. It is subjected to acompressive load of 1000kN. It’s E = 200 GPa. length = 4m and outside diameter is250mm. If the allowable compressive strain is 0.00015 and the thickness of the columnis 10mm, how much is the safe load of the column?