
RULES FOR ESTIMATING THE QUANTITTIES OF SPACERS AND REBAR CHAIRS
Superstructure and foundation beams: (2 m of ‘linear spacers’ + 2 ‘pieces of point support’) in every meter of ‘clear beam length’
Columns: (8 ‘pieces of point support’) per column
Shear walls: 2 m of ‘linear spacers’ in every meter of the shear wall’s length
Foundation slabs and footings: (1.25 m of ‘linear spacers’) in every square meter of ‘clear slab area’
Slabs’ free edges: (1 m of ‘linear spacers’ + 1m of ‘rebar chairs’ + 1 ‘piece of point support’) in every edge meter
Slabs’ supports: 1 m of ‘rebar chairs’ per meter of ‘every slab support’