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The comprehensive reference on the basics of structural analysis and design, now updated with the latest considerations of building technology
Structural design is an essential element of the building process, yet one of the most difficult to learn. While structural engineers do the detailed consulting work for a building project, architects need to know enough structural theory and analysis to design a building. Most texts on structures for architects focus narrowly on the mathematical analysis of isolated structural components, yet Building Structures looks at the general concepts with selected computations to understand the role of the structure as a building subsystem—without the complicated mathematics.
New to this edition is a complete discussion of the LRFD method of design, supplemented by the ASD method, in addition to:
The fundamentals of structural analysis and design for architects
A glossary, exercise problems, and a companion website and instructor's manual
Material ideally suited for preparing for the ARE exam
Profusely illustrated throughout with drawings and photographs, and including new case studies, Building Structures, Third Edition is perfect for nonengineers to understand and visualize structural design.
useful guidance for specific limitations to avoid the various problems described in Figure 5.16. Each situation must be investigated individually, and decisions regarding tolerable deformations must be made jointly by the structural designer and the designers of the rest of the building construction. For spanning beams in ordinary situations, rules of thumb have been derived over many years of experience. These usually consist of limits for maximum degree of beam curvature described in the form
5.4 are listed in Table 5.6, from which we obtain the following: The lightest joist is the 18K5. The shallowest depth joist is also the 18K5. Table 5.6 Possible Choices for the Floor Joist Load Condition Factored total capacity Joist weight from Table 5.4 Factored joist weight Net usable capacity Load for deflection Required Capacity (lb/ft) 336 153 Capacity of the Indicated Joists (lb/ft) 18K5 409 7.7 10 399 161 20K5 457 8.2 10 447 201 22K4 448 8.0 10 438 219 In some situations, it may be
secondary and temporary construction. However, it is also widely used for permanent construction and is generally the material of choice for light construction unless its limitations preclude its use. It is a renewable resource, although the best wood comes from very slow-growth trees. However, the most extensive use of wood is as fiber for the paper industry, which has become a major commercial institution in the United States. The fiber users can use small, fast-growth trees and they routinely
with the width of the tongue at its base equal to 0.25 in. If the maximum stress is limited to 50 psi, what is the total shear load capacity of the joint, expressed in units of pounds per running foot of the joint length? Example 4. Solution. For a length of 1 ft (12 in.) of the joint the total area at the base of the tongue is 12(0.25) = 3.0 in.2 , and the limit for the load is V = fv A = 50(3.0) = 150 lb/ft [2.19 kN/m] Example 5. A steel bolt is used as shown in Figure 2.27a. The tension force
maximum deflection are also given. In Figure 3.8, if the loads P and W are in pounds or kips, the values for reactions and shear will be the same. If the span is in feet, values for bending will be in units of foot-pounds or kip-feet. The distributed load W used in Figure 3.8 is the total load on the beam, not the load per unit length of the beam, which is designated as w; thus W = wL. BEAMS P L/2 PL M= 4 P V= 4 PL3 Δ= 48 EI L/2 L 87 Figure 3.8 Values for typical beam loadings and support