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Unformatted text preview: Formwork. IS : 1200(Part IV) - 1976 10. ARCHES IN FACINGS
10.1 Dressing to arches in faced work shall be measured in square metres,
measured on face and exposed soffit; rise of arch and width of soffit shall
In case of arches in random rubble,
be stated and joints described.
cutting of skewbacks and over and under arches shall be included with
the item. Cutting over arches, skewbacks, etc, in superior type of
facework shall be measured separately in running metres.
II. ANGLES IN FACINGS 11.1 External angles in facings shall be measured in running metres and
if quoin stones are larger than general facing stones, their average size
If edge margins of quoin stones are drafted, this shall
shall be stated.
be described stating width of drafting. 11.1.1Squints, birds-mouths, splayed or rounded angles and the like
shall each be measured separately in running metres stating width of
splay or girth of rounded angle.
11.1.2 Squints, birds-mouths
and external and internal angles to
battered facings shall each be measured separately in running metres; if
quoin stones to battered facings have horizontal joints, these shall be so
12. CHASES, REBATES, ETC 12.1 Cutting chases, rebates, throatings, grooves, etc, in walling shall be
measured in running metres stating girth and classified according to
girth as follows except in case of throating which shall be measured
a) Not exceeding 10 cm in girth, and
b) Exceeding 10 cm but not exceeding 20 cm in girth. 12.1.1 Chases, rebate, etc, exceeding 20 cm ingirth,
in square metres ( girth multiplied by length ).
13. CUTTING shall be measured HOLES 13.1 Cutting holes through walling and making good shall be measured
per centimetre of depth of cutting and shall be classified as follows:
a) Holes not exceeding
b) Holes exceeding 14. CUTTING 400 cm’ in area;.and 400 cm2 and not exceeding O-1 m2 in area. OPENINGS 14.1 Cutting openings exceeding
cubic meties. 0.1 m2 in area shall be measured 9 in IS : 1266 ( Part IV ) - 1976 15. TOOTHING AND BONDING 15.1 Where new walls .are bonded to existing walls, an- item of labour
and material in cutting, toothing and bonding shall be measured in
square metres of surface in contact with new work only. Spacing and
size of toothings required to be cut in the existing work shall be
16. DRESSED STONEWORK 16.1 Stonework as in sills, steps, string courses, cornices, columns, caps,
copings, lintels, etc, shall each be measured in cubic metres.
dressing shall be described and measured in square metres as extra-over.
16.2 Dressed stonework as in CHAJJtlS, JALLIES,
shelves and the like
shall be described as measured in square metres ( inclusive of bearing ).
16.3 Each stone shall be measured as smallest
which finished dressed stone can be worked.
17. ADDITIONAL LABOUR IN DRESSED rectangular block from STONEWORK 17.1 The following labours shall be measured separately in square metr es
when exceeding 10 cm in girth or width and in running metrej if not
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