- Composite steel-concrete structure has dominated the non-residential multi-storey building sector in recent years.
- list three (3) advantages of using composite steel-concrete structures in building construction:
- High resistivity against the external loads; as concrete provides strength during compression and steel provides strength during tension.
- It is cheaper and much durable than conventional building materials.
- In case of fire concrete provides protection to the steel due to its high resistivity against the heat and thus increases the life of the building.(“Advantages and Disadvantages of Structural Steel Structures,” n.d.)
- Indicate TWO (2) major weaknesses of using composite steel-concrete structures in buildings. Explain ONE (1) possible solution to each weakness.
- Costly and time taken procedure.
- Not good in tensile strength and thus we cannot go to high rise.(“Advantages and Disadvantages of Structural Steel Structures,” n.d.)
The solution is to use frame structure instead of RCC it can both save time and give strength to the structure to go to high rise.
- With well-annotated diagrams/sketches, explain the application of composite steel-concrete as follows:
- Composite beam:
Beams act as the structural elements in any building and plays on of the most critical role in buildings. Beams are used to facing lateral loads. Any horizontal part of the structure which is loaded perpendicular to its axis can be visualized as a beam and design accordingly. (“Composite Slabs & Columns—Advantages and Basic Concepts | CivilDigital |,” n.d.)
- Composite slab:
Composite slabs are usually used in the flooring of the buildings. Slabs bring a considerable reduction in the dead load. The slabs usually face the shear load and bending loads and provide well enough resistance against it and thus they are very popular in high-level construction. (Crisinel & O’Leary, 1996)
- Composite Column:
Composite column functions as the load-bearing member of the building’s frame structure. Both steel and concrete work with each other to resist the axial stress, lateral stress, and various other loads faced by the frame. Composite columns are also a solution for tall buildings where RCC structure does not work and thus there is the need for a high load-bearing member in the frame of the building and here composite columns serve ideally. (“Composite Slabs & Columns—Advantages and Basic Concepts | CivilDigital |,” n.d.)