For the arch shown in Figure P6.20, the thrust force exceeded the abutment’s lateral support capacity, which is represented by a roller at C. Load P was removed temporarily and tension rod AC was added. If the maximum compression in members AB and BC will be 750 kips, what size diameter tension rod is required? (Ignore dead load of the arch.) The allowable tensile capacity of the rod is 32 ksi. Determine the reactions.
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The severity, or amplitude, of a vibration will be greatest at its ____________________.
Fill in the blank(s) with the appropriate word(s).
Find a 90% confidence interval for the difference in mean breaking strength between the two types of yarn.
A sample of 125 pieces of yarn had mean breaking strength 6.1 N and standard deviation 0.7 N. A new batch of yarn was made, using new raw materials from a different vendor. In a sample of 75 pieces of yarn from the new batch, the mean breaking strength was 5.8 N and the standard deviation was 1.0 N.
The __________ provides detailed information regarding many factors that affect electrical installations, maintenance and electrical system design and layout.
A. National Electricity Commission (NEC) B. National Electricity Constitution (NEC) C. National Electric Code (NEC) D. National Fire Protection Association (NFPA)
What does EPA stand for?
What will be an ideal response?