How to tell if a structure is lightly reinforced or heavily reinforced?
- Thread starter krishnareddy1039
- Start date
Anirwan Sengupta
Newbie
A Structure is always designed to be meeting its load carrying and serviceability parameters to be adequately reinforced. Whether it is lightly reinforced or heavily reinforced is a matter of perception depending on who you are.
To a constructor a structure is heavily reinforced if it is difficult to place 150 mm slump pumpable concrete with NMSA 20 mm in some difficult pockets like Beam Column Junction. It may be perfectly OK for the designer considering the seismic requirements.
Now let us have a look why a structure seems lightly or heavily reinforced to us.
Liquid retaining structures are designed for uncracked section IS 3370. It requires additional reinforcements particularly if the cover required is higher for exposure condition requirements.
Ductility requirements (IS 13920) requires certain detailing to be done which locally makes the structure appear heavily reinforced.
To reduce the section or increase the span without compromising headroom the reinforcement goes up. It is all about economics.
To make the heavily reinforced sections pour-able we can use mechanical couplers instead of laps, reduce the maximum size of aggregates or use self compacting concrete.
To a constructor a structure is heavily reinforced if it is difficult to place 150 mm slump pumpable concrete with NMSA 20 mm in some difficult pockets like Beam Column Junction. It may be perfectly OK for the designer considering the seismic requirements.
Now let us have a look why a structure seems lightly or heavily reinforced to us.
Liquid retaining structures are designed for uncracked section IS 3370. It requires additional reinforcements particularly if the cover required is higher for exposure condition requirements.
Ductility requirements (IS 13920) requires certain detailing to be done which locally makes the structure appear heavily reinforced.
To reduce the section or increase the span without compromising headroom the reinforcement goes up. It is all about economics.
To make the heavily reinforced sections pour-able we can use mechanical couplers instead of laps, reduce the maximum size of aggregates or use self compacting concrete.
