Final answer:
The minimum distance required between base sheet and cap sheet end laps in roofing systems is approximately 6 inches. Proper installation and prevention of water penetration are key considerations.
Step-by-step explanation:
In engineering, the minimum distance required between base sheet and cap sheet end laps depends on the type of roofing system being used. However, a general guideline is to have a minimum distance of approximately 6 inches (15 cm) between the end laps. This distance ensures proper installation and prevents water penetration at the seams.
For example, in a built-up roofing system, the base sheet and cap sheet are overlapped by a specific distance, usually 2 to 4 inches. This overlapping helps create a watertight seal. The end laps should be staggered to distribute the stress and minimize the risk of leaks.
It's important to consult the manufacturer's guidelines or a roofing professional for specific requirements and recommendations based on the type of roofing system being used.