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Some important thumb rules for making the layout of any Column
Instructions to be adhered and implemented for building A column layout is prepared as per the subsequent guidelines:
The layout of columns must be prepared with reference to the overall forces functioning on the building.
So as to prevent miscalculations and errors, there’re certain vital guidelines which must be obeyed and implemented by each Civil engineer and Architect.
The subsequent 3 thumb rules must be adhered and implemented:
1. Size/magnitude of the Columns
2. Distances amid Columns
3. Alignment/Arrangement of columns
Least Size/magnitude of RCC columns: The size/ magnitude of the columns is on the basis of the overall loads functioning on the columns which go from lateral loads and axial loads. Furthermore, larger beam distances result in bending moment in the columns and in beams which are brought/drawn through the stresses in the beams.
To implement the general guideline, assume a building of G plus 1 floors elevated, along with usual six″ walls. Minimum size/dimension of a RCC column must not be below 9” x 12” [225 mm x 300 mm] along with four bars of twelve MM Fe415 Steel.
The measurement of the column must be 9″ x 12″ [225 mm x 300mm] along with six bars of 12 MM Fe500 steel. Furthermore, it is suggested to use M20 grade concrete for the building (ratio one portion/part Cement: one point five portions/parts Sand: three portions/parts Aggregate with zero point five portions/parts water by volume).
It is even recommended to use 8 MM stirrups at a distance of 150 MM centre to centre throughout the column length. The arrangement of 9″ x 12″ RCC columns is specified/secured for G plus 1 Floors.
Spans [distance] amid 2 columns: To set up the higher column, a span of equal to five meters must be kept. It’s recommended to utilize beams of size/dimension 9″ X 12″ [225 MM x 300 MM] possessing a slab thickness of five″ [125 MM] cast in M20 concrete for distances equal to five m.
Certain additional aspects such as secondary and post-secondary/tertiary distances, wall loads and point loads which must even be considered. The guidelines may be helpful when the building is simple.
Suggested utilization of steel for a beam five meters extended, secondary distances/spans of equal to four meters, wall loads of equal to eight kN for each functioning/running meter:
- Top Steel: two bars of twelve MM
- Crank bars: two bars of twelve MM, bend at an angle of 45° at a distance/span of L/4 at the two ends of a simply supported beam
- Bottom Steel: Three bars of twelve MM.
This arrangement can be personalized in accordance with numerous aspects.
Arrangement of Columns: The columns must be set according to the arrangement. A grid column position is greatly required to reduce the point loads and preventable difficulties during construction. It notably reduces the construction outlay and time required for construction.
