What fastener needs to be installed prior to concrete placement?
A) Concrete screw
B) Double expansion anchor
C) Snap-off anchor
D) Anchor bolt
Answer: D
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PROBLEM 2.36 For the post of Prob. 2.35, determine the maximum centric force that can be applied if the allowable normal stress is 15 ksi in the steel and 1.6 ksi in the concrete. PROBLEM 2.35 The 5-ft concrete post is reinforced with six steel bars, each with a in. diameter. Knowing that Es = 29 ? 106 psi and Ec = 3.6 ? 106 psi, determine the normal stresses in the steel and in the concrete when a 200-kip axial centric force is applied to the post.
Describe the RSLogix software window after the processor information has been stored.
Fill in the blank(s) with the appropriate word(s).
One of Suzanne’s project engineers e-mailed her the screen-shot (below) of his spreadsheet analysis of the annual costs and savings for two equivalent systems considered for installation as a major upgrade of the fire and safety systems that reduce the possibility of human injury on the company’s prime assembly line. He included the following statement in the e-mail: “Since the company’s MARR is 20% per year, the extra investment in FirstSafe (FS) is not justified with a breakeven incremental ROR of 16.86%. However, with an exception to reduce the required return to 16%, or slightly above this, for this case only, FirstSafe is economically acceptable over FireWall (FW). Besides, I like the features on FirstSafe much better than those of the other, less expensive FW system.
Can I go ahead and order the FirstSafe system?”
From all that you have learned in these last two chapters, would you recommend that Suzanne accept this analysis and respond “Yes” to the request to purchase FirstSafe? If not satisfied, what additional information would you suggest that Suzanne request of her engineer?
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Guardrails are used for:
A. safety on balconies B. safety on lofts and stairs C. safety on decks over 30" (760 mm) above the next lower level D. decorative room divider E. all of the above