If a Ridge Beam Is Used in Place of a Ridge

question 55

Essay

If a ridge beam is used in place of a ridge board in a two- way pitched roof, ceiling joists are unnecessary. Explain why.

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Definitions:

Atmospheric Oxygen

The oxygen gas (O2) present in the Earth's atmosphere, essential for the respiratory processes of most living organisms.

Photosynthesizing Bacteria

Microorganisms that convert light energy into chemical energy through the process of photosynthesis.

Terrestrial Plants

Plants that grow on land, as opposed to aquatic (water-based) or epiphytic (growing on other plants) plants.

Primitive Atmosphere

The early atmosphere of Earth, which was very different in composition from the current one, possibly composed of gases such as methane, ammonia, and water vapor.