How many steps are required to calculate the heat necessary to change 10 lbs of ice at -20°F to steam at 250°F?
A) One B) Five C) Two D) Three
B
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The prefix letter ____________________ indicates an arc welding electrode.
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT a disadvantage of outdoor production systems?
a. They are difficult to modify. b. They leave pigs exposed to the elements. c. Workers are exposed to less desirable working conditions. d. They require higher labor requirements per pig produced.
?What is the minimum acceptance criteria for face reinforcement for visual inspection of tee welds?
A. ?3/32 in (2.4 mm) B. ?1/16 in (1.6 mm) C. ?1/8 in (3.2 mm) D. ?no reinforcement allowed
A mechanical support framing system is shown in Figure P2.11. The framing consists of steel floor grat-ing over steel beams and entirely supported by four ten-sion hangers that are connected to floor framing above it. It supports light machinery with an operating weight of 4000 lbs, centrally located. (a) Determine the impact factor I from the Live Load Impact Factor, Table 2.3. (b) Calculate the total live load acting on one hanger due to the machinery and uniform live load of 40 psf around the machine. (c) Calculate the total dead load acting on one hanger. The floor framing dead load is 25 psf. Ignore the weight of the hangers. Lateral bracing is located on all four edges of the mechanical floor framing for stability and transfer of lateral loads.