State any four types of stone masonry. Explain Ashlar chamfered masonary with sketch. | Building Construction

Various types of stone masonry are as follows:

1) Rubble masonry

   a) Random rubble masonry

        i) Coursed

        ii) Uncoursed

   b) Squared rubble masonry

        i) Coursed 

       ii) Uncoursed

      iii) Built to regular courses

   c) Miscellaneous

      i) Polygonal

     ii) Flint

2) Ashlar masonry

  a) Ashlar fine

  b) Ashlar chamfered

  c) Ashlar facing

  d) Ashlar rough tooled 

  e) Ashlar rock or quarry faced

  f) Ashlar block in course

Ashlar chamfered Masonry:-

     This is special form of rock-faced Ashlar masonry in which strip provided around the perimeter of exposed face is chamfered at an angle of 45 degree  by means of chisel to a depth of 25 mm. Due to this, a groove is formed in between adjacent blocks of stone. Around this beveled strip, another strip of 15 cm is dressed with help of chisel. The space inside this strip is kept rock faced except that large bushings in excess of 80 mm projection are removed by a hammer.