Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN: 9781337094740
Author: Segui, William T.
Publisher: Cengage Learning
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Question
Chapter 10, Problem 10.5.2P
To determine
(a)
The required distance to the next stiffener if a stiffener is placed at the end of the girder by using LRFD.
To determine
(b)
The required distance to the next stiffener if a stiffener is placed at the end of the girder by using ASD.
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Strength Of Materials
Answer should be 45 kN/m; 0.26 cm :)
A compound girder consists of a 45 cm by 18 cm steel joist, of weight 1000 N/m, with a steel plate 25 cm by 3 cm welded to each flange. If the ends are simply-supported and the effective span is 10 m, what is the maximum uniformly distributed load which can be supported by the girder? What weld thicknesses are required to support this load?
Allowable longitudinal stress in plates = 110 MN/m2
Allowable shearing stress in welds = 60 MN/m2
Allowable shearing stress in web of girder = 75 MN/m2
Calcualte the following:
Total factored floor load in 2 decimal places, ___ kPa
Total factored uniform load on girder GH in 2 decimal places, ___ kN/m
Maximum ultimate bending moment at discontinuous end of girder JK to the nearest whole number = ___ kN·m
The simply supported I-beam is to carry a uniform distributed service dead load and live load totaling0.65 kips/ft over the 50 ft span, in addition to its own weight of 384 lb/ft. The beam will be pretensioned using multiple of seven-wire Grade 270 strands steel. Eccentricity is constant and equal to 12.5 in. The prestress force immediately after transfer is 432 kips. Prestress force due to time –dependent losses is equal to 267 kips.
Properties of the beam cross-section:
Ac = 369 in2 Ig = 50979 in4 c1 = 20.17 in c2 = 15.83 in r2=138 in2
a) Determine the concrete stress due to initial prestressing force only. f1, f2
b) Determine the concrete stress due to prestressing force plus self-weight only after all important losses occurred. f1, f2
c) Determine the concrete stress due to prestressing force and full service load after all important losses occurred. f1, f2
Chapter 10 Solutions
Steel Design (Activate Learning with these NEW titles from Engineering!)
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