In accordance with the general principles followed in the measurement of the work of other trades, masonry work is measured "____."
A. net removed
B. net in place
C. composite in place
D. composite removed
Answer: B
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Problem 1.56 In an alternative design for the structure of Prob. 1.55, a pin of 10-mm diameter is to be used at A. Assuming that all other specifi¬cations remain unchanged, determine the allowable load P if an over¬all factor of safety of 3.0 is desired. Problem 1.55 In the structure shown, an 8-mm-diameter pin is used at A, and 12-mm-diameter pins are used at B and D. Knowing that the ultimate shearing stress is 100 MPa at all connections and that the ultimate normal stress is 250 MPa in each of the two links joining B and D, determine the allowable load P if an overall factor of safety of 3.0 is desired.
A building that receives a total score of 55 points in the LEED-NC rating system is recognized at
A) Sustainable level. B) Gold level. C) Silver level. D) Certified level. E) Green level.
The lens equation says that if an object is placed at a distance p from a lens, and an image is formed at a distance q from the lens, then the focal length f satisfies the equation 1/f = 1/p + 1/q. Assume that p = 2.3 ± 0.2 cm and q = 3.1 ± 0.2 cm.
a. Estimate f, and find the uncertainty in the estimate. b. Which would provide a greater reduction in the uncertainty in f: reducing the uncertainty in p to 0.1 cm or reducing the uncertainty in q to 0.1 cm?
Determine the natural frequency of a pendulum whose length is 15 ft.
What will be an ideal response?