2. WHAT IS STEEL-CONCRETE
COMPOSITE STUCTURE ?
STEEL-CONCRETE COMPOSITE ELEMENTS
USE CONCRETE'S COMPRESSIVE
STRENGTH ALONGSIDE STEEL'S
RESISTANCE TO TENSION, AND WHEN TIED
TOGETHER THIS RESULTS IN A HIGHLY
EFFICIENT AND LIGHTWEIGHT UNIT THAT IS
COMMONLY USED FOR STRUCTURES SUCH
AS MULTI-STOREY BUILDINGS AND
BRIDGES.
3. ADVANTAGES & DISADVANTAGES OF RCC STRUCTURE
ADVANTAGES
Reinforced Cement Concrete has good
compressive stress (because of concrete).
RCC also has high tensile stress (because of
steel).
It has good resistance to damage by fire and
weathering (because of concrete).
RCC protects steel bars from buckling and
twisting at the high temperature.
RCC prevents steel from rusting
DISADVANTAGES
The tensile strength of reinforced concrete is
about one-tenth of its compressive strength.
The main steps of using reinforced concrete
are mixing, casting, and curing. All of this affect
the final strength.
The cost of the forms used for casting is
relatively higher.
For multi-storied building the RCC column
section for is larger than steel section as the
compressive strength is lower in the case of .
Shrinkage causes crack development and
strength loss.
3
Sydney Opera House, Australia
4. ADVANTAGES & DISADVANTAGES OF STEEL
STRUCTURE
ADVANTAGES
Lower Project Costs.
Aesthetic Appeal.
High Strength.
Sustainable.
Innovative.
Modifiable.
Efficient.
DISADVANTAGES
Steel is an alloy of iron.
It has high maintenance costs as it has to be
painted to make it corrosion-resistant.
There are extensive fireproofing costs
involved as steel is not fireproof.
Buckling is an issue with steel structures.
Steel has a high expansion rate with
changing temperatures.
4
Beijing National Stadium, China
5. ADVANTAGES & DISADVANTAGES OF STEEL-CONCRETE
COMPOSITE STRUCTURE
ADVANTAGES
The concrete acts together with the steel to
create a stiffer, lighter, less expensive
structure.
Speed and simplicity of construction- faster
to erect, nearly 25% faster then traditional
construction.
Has better ductility and hence superior
lateral load behavior; better earthquake
resister.
Ability to cover large column free area in
buildings and longer span for bridges/flyovers.
DISADVANTAGES
Provide misleading messages about quality
if poorly constructed or misinterpreted.
Lead to simplistic policy conclusions.
Can be misused, if the construction process
is not transparent and lacks sound statistical
or conceptual principles.
Selection of metrics and weights can be
challenged by other stakeholders.
5
German Museum of Technology, Berlin, Germany
6. 6
SOME EXAMPLE OF STEEL-CONCRETE COMPOSITE STRUCTURE
Prestige Trade Towers, Bangalore, India Museum of Art, Hamburg, Germany
San Francisco Museum of Modern Art, USA
