UCR MASONRY IN PLINTH

A.   MATERIALS:

1.    STONE:

Stone used for the work shall be basalt obtained from approved quarry. The stone used shall be free from cracks, flaws, veins. The size of the stone should be such as can be handled by the workmen

2.    CEMENT MORTAR:

Cement mortar in the proportion of 1:6 shall be used. The cement used shall be ‘Ultra Tech’ 43 grade cement. The sand shall be well graded sand free from silt and other impurities

3.    CEMENT CONCRETE:

The cement concrete used for the base shall be of proportion 1:3:6

B: LAYING OF CONCRETE BASE:

The foundation strata shall be got checked and approved from the Structural Engineer. Concrete of proportion 1:3:6 shall be well mixed in a mechanical mixer and laid to a thickness of 150mm.  The width of the concrete base shall be as shown on the drawing or as instructed. The concrete shall be well compacted and cured for minimum 14 days

C: CONSTRUCTING THE UCR WALL:

 The centre line of the wall will be checked and marked with a string. The wall shall be constructed taking reference of the centre line, of the required width as shown in the drawings or as directed. The stones shall be lightly dressed and placed in a bed of cement mortar 1:6 in such a way as to break joints. The joint thickness should not exceed 25mm. Gaps between the stones should be filled with stone chips (spals). Through stones and bonders shall be placed at every 1m in the width and height of the wall. The line and level of the wall shall be constantly checked.

D: CURING:

The wall shall be kept wet for a period of minimum 14 days.

E: ITEM TO INCLUDE:

Apart  from the above the item shall include timbering and strutting if required, bailing out of subsoil water etc.