Concept on positioning of Columns

1.Aim:

The layout of the framing plan concerning earthquake resistance in the two horizontal directions X or Y (dots are columns, lines depict beams). Look into aspects of symmetry, redundancy and bi-directional stiffness and ductility.

Layout of the framing plan:

1. In this plan we have seen a symmetry structure plan.
2. All column and beams are evenly distribute the load.
3. When the load are evenly distributed a structure can resist the semsimc load safe.
4. In the plan a stiffness of the strucutre is symmetry so mass act on buliding also be safe.
5. When these condtion are well the structure have a ductillity within elastic limit.

2.Aim:

The possible sources of irregularity in the building how, as an engineer, each of these irregularities should be dealt with.

1. The structure is irregularites of the column placing are changed in plan.
2. In the strucutre elements are more eccentric loads are acting on the structure,so the torsion has plays role in this structure.
3. In this structure twisting the total build and torsion mode is heavy.
4. For the sesmic we need to provide additional reinforcment to arrest the torsion in this building otherwise the structure can be collapse easily while earthquake.
5. This is a soft storey structure.
6. The stiffness is concentrated in the centre or cornor of the building,the very critical structure load distributin are very less and weak structure.

3.Aim:

A 4-storey hotel building has an open ground floor for the restaurant. Story 2 to 4 have one row of rooms along each long side in plan, separated by a corridor. The two short sides of the perimeter are fully in-filled in all storeys, except for certain openings at the ends of the corridor at storeys 2 to 4 and along the right-hand side of the ground floor. There is a staircase near the upper left-hand corner, with straight flights between landings at floor levels and in-between floors.

1. The size of the column and beam is improper,weak column and strong beam
2. Then the load are not distribute evenly its unsymmerty structure.
3. The width of the column and width of the beam need tgo same otherwise the distribution load is gto eccentric.
4. The design of the structure is improper.
5. In the staircase side the column size is very less.the junction of the column should be design properly and strong.
6. The secondary beam are place a column sholud be in proper design.