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Building Construction 1

c) Bitumen

is extracted from oil residues of solid black or brown used in covering the
surfaces of installations.
It can be welded at high temperature to become liquid to isolate all the winding
surfaces.
It can resist moisture and protect against fungi and insects.

d) Polyethylene linoleum

Is a black linoleum used for surface insulation and is characterized as flexible
and light material.

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Dr. Sherein El-Shahat