Sentences with phrase «air hole in the bottom»
Not exact matches
The shelter MUST be built in a fashion to drive several air exchanges per night via convection from the entrance at the bottom through a hole in the top of the shelter for that specific purpose.
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Igloo — built from blocks of snow and / or ice cut to shape and used to construct a dome with a short tunnel as an entrance at the bottom, and a hole in the centre at the top of the dome to ensure air exchange.