When installing a wooden header board with a strong curve, what is a correct procedure?

When installing a wooden header board that requires a strong curve, the correct procedure involves using multiple boards that are laminated together. This method provides the necessary strength and flexibility to achieve the desired curve without compromising the integrity of the structure. Choosing at least four 3/8" x 4" boards tightly laminated with staggered joints ensures that the header can effectively handle loads and maintain its shape over time.

Laminating the boards allows for a more gradual and smoother curve compared to using straight boards, which could lead to weaknesses, especially at the joints. Staggering the joints enhances the overall strength of the assembly, distributing stress more evenly across the header, which is crucial for curved applications where forces may vary along the curve. This technique also minimizes the risk of splintering or breaking, allowing for a more durable and aesthetically pleasing result.

In contrast, the other options fall short in providing the structural integrity needed for such a curved installation. Using straight boards without lamination lacks the flexibility required for a strong curve, single boards without support cannot adequately bear weight, and spacing supports at 6 feet on center may not be sufficient to support a curved header effectively. Therefore, laminating multiple boards together is the optimal approach.