Glossary R

Roofing mortar - A mortar round is a projectile which is fired with a very high trajectory and drops almost vertically onto its target before exploding.

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Roof collapse when the roof of a building collapsed that resulted to lost of lives. The example of the roof collapse happened on 28 January 2006, when the roof of Katowice International Trade Hall (Miedzynarodowe Targi Katowickie) in Poland collapsed.

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A Roof construction manual refers to a written set of instructions, guide, or handbook for the fabrication, building , assembly or putting together the parts of the protective covering that covers or forms the top of a building.

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Deutsch: Dachdeckerei / Español: Cubiertas / Português: Telhados / Français: Toiture / Italiano: Coperture /

Roofing refers to material used to construct a building component enclosing a building above, thus providing a weatherproof shelter.

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Reagent refers to a chemical species that undergoes change as a result of a chemical reaction.

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Deutsch: Dachbauerarbeit / Español: Trabajo de construcción de techos / Português: Trabalho de construção de telhados / Français: Travaux de construction de toiture / Italiano: Lavori di costruzione del tetto /

Roof construction work refers to the labor exerted oneself by doing mental or physical work for a purpose of fabricating , building , assembling or putting together the parts of the protective covering that covers or forms the top of a building.

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Rattan is a kind of wood from the climbing palm family that brings a textured effect and looks great with tropical décor. Wicker is made from rattan, usually found in lanai or indoor porch.

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Russia is characterized as a reddish-brown calfskin impregnated with birch bark oil.

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