What is the required header configuration for a stairwell opening that measures 5 feet by 5 feet?

• A. double header
• B. single header
• C. triple header
• D. no header

Answer: (A)

For a stairwell opening that measures 5 feet by 5 feet, the required header configuration is a double header. This is primarily due to the need for structural integrity and support around larger openings, especially where there will be significant loads above, like ceiling or roof loads.

A double header consists of two pieces of lumber that are stacked on top of one another, which provides increased strength and rigidity. This is particularly important in larger openings because a single header may not suffice to support the loads that might be transmitted through the surrounding framing, putting the structure at risk for sagging or failure.

The other choices are less suitable in this context. A single header may not adequately support the load over such a wide opening. A triple header, while stronger, would not typically be necessary for a 5-foot opening and would be an over-engineering solution, potentially resulting in unnecessary costs and complexity. Not using any header at all is not an option for structural openings, as it would compromise the integrity of the building.