Explain what W21 × 68 means.
What will be an ideal response?
W means it is a wide-flange (I-shaped) section whose nominal depth is 21 in. and its nominal weight is 68 lb per ft. ("Nominal" means approximate, fairly close to the exact value)
You might also like to view...
Producers can take advantage of the knowledge of agnostic animal behavior to handle animals in a low stress manner by moving in and out of an animal's flight zone
Indicate whether this statement is true or false.
Which of these is not a type of skeletal system?
a. endoskeletal c. exoskeletal b. thermal d. hydraulic
What was President Nixon’s initial reaction to Watergate hearings in the Senate?
A. He denied prior knowledge of the break-in. B. He asked Spiro Agnew to resign. C. He hired a legal team to represent him on television. D. He held rallies for his supporters around the country. E. He gave a televised speech declaring the investigation a witch hunt.
5 + 3^2 =
A) 16 B) 14 C) 64 D) 11