Final answer:
The question is about the correct installation of ArmourStick HD base flashings, with emphasis on extending them onto the field of the roof which is essential for waterproofing and the durability of roofing systems in construction engineering.
Step-by-step explanation:
The question pertains to the installation specifications of ArmourStick HD base flashings, which are a crucial component of roofing systems in the field of construction engineering. These flashings are designed to ensure waterproofing at the junctions where the roof meets other structures or surfaces. It is important that the base flashing extends adequately onto the field of the roof to prevent water ingress and ensure long-term durability of the roofing system. The extension of the base flashings onto the field must comply with manufacturer guidelines and building code requirements to ensure effective performance.