Symbols of building materials, electrical, sanitary and solid ground floor Q7

Q.
Sketch the followings:-

(i) Five (5) symbols for building materials.

(ii) Five (5) symbols for components and electrical.

(iii) Five (5) symbols for sanitary fittings.

(iv) Section of solid ground floor and symbols for its materials.

(25 marks, 2015 Q7)

A.

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