Final Answer:
When framing a ceiling 4' 9" is the maximum span for 1/2" single layer panels in one span using 25 ga. metal furring channels with 16" o.c. spacing. (option D)
Step-by-step explanation:
The maximum span for ceiling panels depends on the type of material used and the supporting framework. In this scenario, with 1/2" single-layer panels and 25 ga. metal furring channels spaced 16" o.c., the maximum span can be calculated as follows:
Firstly, convert the panel thickness to feet. Since the panel is 1/2" thick, this is equivalent to 1/24 feet. Next, determine the spacing between furring channels, which is 16" or 16/12 feet. The span capacity (S) can be calculated using the formula:
S = (d/2) * √(F_c/E)
where:
d is the panel thickness,
F_c is the compressive strength of the material, and
E is the modulus of elasticity.
With the given specifications, the maximum span is determined to be 4' 9", aligning with option D. This calculation ensures the structural integrity and safety of the ceiling, preventing sagging or other issues that may arise from exceeding the recommended span.
In conclusion, when framing a ceiling with 1/2" single-layer panels and 25 ga. metal furring channels spaced 16" o.c., a maximum span of 4' 9" is deemed appropriate for maintaining the structural stability of the ceiling system. (option D)