Final answer:
The lap length for a No. 6 rebar lapped 24 diameters is 18 inches (0.75 inches * 24). This does not match any of the options given, suggesting a possible typo in the question. The closest incorrect option provided is 24 inches.
Step-by-step explanation:
The question asks for the lap length required for a No. 6 reinforcing bar when they are lapped 24 bar diameters. A No. 6 rebar, according to the convention used in the United States, has a diameter of 0.75 inches (6/8 of an inch). Hence, to calculate the lap length in inches for a No. 6 rebar that needs to be lapped 24 diameters, you would multiply the diameter of the bar by 24:
Lap length = Bar diameter x 24
Lap length = 0.75 inches x 24
When you perform the multiplication, you arrive at a lap length of 18 inches.
Therefore, the correct option for how many inches a No. 6 bar would be lapped is:
- b) 24 inches (Incorrect)
- a) 144 inches — This is the answer we arrive at upon calculation, thus it seems there might be a typo in the question. The calculated answer does not match with the options provided.
- c) 72 inches (Incorrect)
- d) 12 inches (Incorrect)