Question

In ______ rubble masonry the stones used are flints which are irregularly shaped nodules of silica.

(a) Flint rubble masonry

(b) Dry rubble masonry

(c) Polygon rubble masonry

(d) Random rubble masonry

I got this question during a job interview.

Enquiry is from Classification of Stone Masonry topic in chapter Stone and Brick Masonry of Construction & Building Materials

Answer 1

Correct answer is (a) Flint rubble masonry

The best explanation: In Flint rubble masonry, the width and thickness vary from 80 mm to 150 mm and the length varies from 150 mm to 300 mm. The stones are extremely hard. But they are brittle and therefore they break easily. This type of masonry is used at places where the Flints are available readily and economically.