BlogFor BusinessTalk to a counsellor
CoursesIIT ProgramsPlacementsLog in
BlogFor Business
Talk to a counsellor
Challenge

Conceptual design of a building with columns and shear walls

SSudhanshu Kumar6 Nov 2022

1)

       

         Floor shrinkage

 observation:
  • In fig.1, shear walls are at corner,so full restrictions are at all corner.
  • In fig.2,shear walls are at edges of floor.And free at edges.
  • In fif.3, shear walls are at edges,and one side of corner.Non uniforms restrictions.
 

 conclusion:
  • fig.1 has more restrictions than others.so It has more non-structural cracks in it.
       Lateral stiffness  observation:
  • In fig.1, shear walls are at corner,lateral stiffness is in Xand y direcion but less than fig.2
  • In fig.2,shear walls are at edges of floor.Lateral stiffness is uniform in X and Y direction.
  • In fif.3, shear walls are at edges,and one side of corner.Non uniforms lateral stiffness.
  conclusion:
  • fig.2 has more lateral stiffness than other two and fig3 has least and non uniform lateral stiffness.
     Torsion with respect to vertical          axis observation:
  • In fig.1, shear walls are at corner, they restrict more torsion.
  • In fig.2,shear walls are at edges of floor,they also restrict torsion.
  • In fif.3, shear walls are at edges,and one side of corner,they will not restrict uniformally.
  conclusion:
  • fig1 is more torsional restrict and fig3 is worst.
     Vertical reinforcemnent observation:
  • fig1, nominal flexural moment and heavy     twisting moment.
  • Fig2, nominal twisting moment
  • Fig3, heavy flexural and twisting moment.
  conclusion:
  • Fig3 has most vertical reinforcement and Fig2 has least vertical moment.
   Static eccentricity observation:
  • fig1, it is symmetry
  • Fig2, It is symmetry
  • Fig3, Un-symmerty
   conclusion:
  •  Fig3 has most eccentricity.
   System redundancy  observation:  
  • fig1, uniform placement of lateral load support
  • Fig2,uniform placement of lateral load support 
  • Fig3, concentrated  placement of lateral load support.
   conclusion:
  •  fig1 and fig2 have more redundancy than fig3
  foundation system observation:
  • fig1, due to L-shaped wall, design of foundation is critical.
  • Fig2,walls are in line.so easy to design foundation. 
  • Fig3, walls are in not line but design is critical.
  conclusion:
  • fig2 and fig3 are recommanded for stip and isolated footing.And fig1 is recommanded for box footing.
 Architectural constrains observation:
  • fig1, only restrictions are at corner.
  • Fig2,restrictons are mid of the floor
  • Fig3, restrictions are at edge as well as mid.
  conclusion:
  • fig1 is recommanded because least architectural constrains but structurally fig2 is recommanded.

2)

                  

  Drawbacks:

    (1)

  • the beams are connected to another beam which is ineffective during lateral loads and the primary beams are fail in shear.
  • flow of loads in X direction are not in line.It is discontinued.

    (2)

  • There are eccentricityin both X and Y direction.Due to this, when lateral loads are applied there are torsional moment in both X and Y direction.

   (3)

  • As we see, the depth of beam is greater than column.So there is possibility of weak cloumn and strong beam meachnisms.

  Alternate scheme:

            

3)

            

Observations:

  • The floor plan is neither uniform nor symmetry.so lateral load induced in the floor is not uniform.
  • The internal columns are random.They are unable to transfer lateral load efficently.They are designed for only gravity load.
  • since the floor plan is not uniform and symmetry.so partition walls provide an important mass control.

Suggestions:

  • Heavy torsional force should be controlled by lateral load system.So corner shear walls are suggested.
  • The floor area is greater than on left side than right side.so shear walls on left side is more heavier than right side shear walls.
  • corner shear walls shall be supported over a box foundation and they are connected by links beams to transfer shear .
  • Internal columns are supported by isolated footing and these isolated footings are connected with shear walls through tie beams.

Proposed plan:

                                        SUPERSTRUCTURE                                                                                                                         SUB STRUCTURE

                 

Your portfolio, next

Ship work like this
in your own course.

Talk to a career counsellor

Free 20-minute call. We'll map the right course to where you want to work.

By submitting you agree to our Terms and Privacy Policy.