Page 59 - SMM2 eBOOK

Dressed natural stonework

J.2 Generally .

1. Stonework shall consist of dressed biocks of natural stone accurately worked to given
dimensions and laid in mortar with fine joints. Particulars of the following shall be given:

a. Kind of stone (e.g. sandstone, limestone, granite, slate, marble, etc.).
b. Any requirements as to the stone and the quarry.
c. Texture and finish to exposed faces of stone (e.g sawn, rubbed, vermiculated,
polished etc).
d. Composition and mix of mortar for bedding, jointing and pointing.
e. Method of pointing
f. Any requirements as to coating the sUrface of the finished work and cleaning on
completion

2. Labours necessary to produce sawn stones of required overall size shall be deemed to be
included with the items.

3. Stones shall be deemed to be set on their natural beds Unless othenwise described.

J.3 Walls, piers, chimney-stacks and vaulting

1. Stonework in each of the following classes shall be given separately in sqUare metre
stating the thickness:

a. Walls.
b. Filling existing openings.
c. Dwarf supports under seats, table-tops and the like (groUped together).
d. Piers, defined as walls having a length on plan not exceeding four times their
thickness (except where caused by openings) and chimney stacks (grouped
together).
e Battering walls defined as walls of Uniform thickness built battering.
f. Tapering walls stating the thickness at the base and top whether one or both faces
are battered.
g. Vaulting.

J.4 Ends and angles of walls

1. Square ends, square reveals, sqUare external angles of walls, quoins and jambs formed
by returning the facowork shall be given in metres stating the thickness of the wall.

2. Splayed ends, battered ends, battered external angles and battered internai angles of
walls shall each be given separately in metres stating the thickness of the wall.

3. Squint angies to walls and any ends or angles to waOs which involve the Use of stones
thicker than the walls in which they occur shall be given in accordance with clause J.16.

J.5 Bonding ends of walls

Bonding ends of new walls to existing shall be given in metres stating the thickness of the new
wall and the natUre of existing wall. CUtting pockets in existing work and the extra stone for
bonding shall be given in the description.

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