Unit of Formwork Measurement

Formworks are measured in terms of area. So any unit such as square meter, square foot, square centimetre can be adopted. But generally, square meter and square foot of the contact area with concrete is taken as the unit of measurement. The dimensions of a formwork should be measure correct to the centimetre or inches whichever the case may be.

Formworks are measured as just contact area, not area of formwork, as shown below:

Contact Area = 2h(L+B)

The measurements of formwork are carried out separately for each type of concrete works such as following:

a) Foundations, footings, bases of columns etc. and for mass concrete and precast shelves.

b) Walls of any thickness including attached pilasters, buttresses, plinth and string courses etc.

c) Suspended floors, roofs, landings, shelves and their supports and balconies.

d) Lintels beams, girders and cantilevers

e) Columns, pillars, posts and struts.

f) Stairs (excluding landings) except Spiral Staircase

g) Spiral staircases (including landings)

h) Arches

i) Domes, vaults, shells roofs, archribs and folded plates

j) Chimneys and shafts

k) Well steining

l) Vertical and horizontal fins individually or forming box, louvers and bands

m) Waffle or ribbed slabs

n) Edges of slabs and breaks in floors and walls

o) Cornices and mouldings