Identification of Cracks

1)-A):-AIM:-

What is the mode of failure or damage of the beams in the figure above? Are the damages repairable? Elaborate

ANS:-

• ITS FROM OF FLEXURAL FAILURE DUE TO TO REVRESAL OF STRESS DURING EARTHQUAKE
• DURING STRESS REVRESAL SUPPORT TOP EXPRESSION COMPRESSION,AND BOTTOM EXPRESSION TENSION
• TOP COMPRESSION IS MANGED BY SLAB .BOTTOM TENSION WAS NOT SATISFIED THE PROVIDED RAINFORCMENT
• SINCE THE RAINFORCMENT GOT YAILDED.IT CAN NOT BEV REPAIRED
  
  

B)-

ANS:-

• ITS BEAM PULL OUT FAILURE DUE TO INSUFFICENT DEVELOPMANET LENGHT OF RAINFORCMENT IN JOINTS.
• DURING EATHQUAKE, THE HORIZONTAL MOVEMENT OF STR, MAKES THIS CONDATION WORSE AND ATTACHED THE BEAM MEMBERS FROM COLUMN.
• PROVIDING ACHORRAGE LENGTH BETWEEN TWO EXTING CONCRETE IS VERY DIFFICULT SO NOT REPAIREBLE

C)-AIM:-

-

ANS:-

• IT A PALSTICE HINGE FAILURE
• THE DAMAGE OCCURED ONLY IN GTHE JOINT ZOONE FIRST TO ALL
• CYCLIC LATERAL LOADING & STRESS REVRESAL AT THE JOINT LEAD TO THE DAMAGE
• EVEN THE SLAB PARTICEPATED TO IS BEST TO HANDLE THE TENSION
• THE JOINE CAN BE STRENGTHED

2)-A-AIM

ANS:-

• ITS SOFT STOREY FAILURE TECHNICALLY PALSTICE HING FORMATION
• due to theabsence opf infill wall at the ground floor the plastice hing from at the top of ground story column during lateral development
• based on the develpoment of crushed of concret it can either be repairable or non repairble.

b)-aim:-

ans:-

• it is pure shair failure
• indaquate shear rainforment comples concrte takes all the shear stress

c)-aim:-

ans:-

• its short column failure
• an addituonal slab or beam connected to acolumn in mide height leads to the effect
• this leads to failure especially if the connection is unitentional and not accounted in design
• the failure given in the picture is not at all reapirble