RCC
Specifications
·
Shuttering shall be done
using seasoned wooden boards of thickness not less than 30mm.
·
Surface contact with
concrete shall be free from adhering grout, nails, splits and other defects.
·
All the joints are
perfectly closed and lined up.
·
The shuttering and
framing is sufficiently braced.
·
Nowadays timber
shuttering is replaced by steel plates.
·
All the props of
approved sizes are supported on double wedges and when taken out, these wedges
are eased and not knocked out.
·
All the framework is
removed after 21 days of curing without any shocks or vibrations.
·
All reinforcement bars
conform IS specifications and are free from rust, grease oil etc.
·
The steel grills are
perfectly as per detailed specifications.
·
The covers to concrete
are perfectly maintained as per code.
·
Bars of diameter beyond
25mm diameter are bent when red hot.
·
The materials proportion
should be as per the specifications of the concrete.
Number of
Cement bags required for a specific cement concrete ratios
·
For cement concrete of
ratio 1:1:2(1 cement:1sand/coarse sand:2graded stone aggregate) require 11no
bags of 50kg.
·
For cement concrete of
ratio 1:1.5:3 require 7.8no bags of 50kg.
·
For cement concrete of
ratio 1:2:4 require 6 no bags of 50kg.
·
For cement concrete of
ratio 1:3:6 require 4.25no bags of 50kg.
·
For cement concrete of
ratio 1:4:8 require 3.2 no bags of 50kg.
·
For cement concrete of
ratio 1:5:10 require 2.50 no bags of 50kg.
·
For cement concrete of
ratio 1:6:12 require 2.25 no bags of 50kg.