OCFA Strategy And Tactics – Truck Operations Practice Test

Which statement describes a characteristic of Heavy Timber Arch construction?

Joists consist of 2x6s and 1x6 Sheathing Constructed of large structural members 2x12 or larger Adhere to 20 minute burn rule

Correct Answer:

Constructed of large structural members

Explanation:

Heavy Timber Arch construction relies on large, solid wood members as the primary load-bearing elements. The arches are formed from thick timbers that transfer loads through compression along curving members, which gives the structure its characteristic strength and fire-resistance. This big-member approach distinguishes it from light-frame methods that use many small joists and sheathing, and from stating a specific nominal size or a fire-exposure rule.

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