WHY BEAM-COLUMN JOINTS ARE SPECIAL In RC buildings, portions of columns that are common to beams at their intersections are called beam-column joints (Figure 1). Since their constituent materials have limited strengths, the joints have limited force carrying capacity. When forces larger than these are applied during earthquakes, joints are severely damaged. Repairing damaged joints […]

What we mean by Coupling Beam ?

Coupling BEAM Definition Coupling beam is an important member of the lateral force resisting system in a structure. Consequently It couples or combines the two independent systems like shear walls. WHY WE PROVIDE COUPLING BEAM ? For example, Let’s assume there are two buckets, one is completely filled with water whereas other is half filled. […]

Manual Beam Design

BEAM  DESIGN 1.DATA L=3000mm Dead  load=6KN/m Live Load=8KN/m Finished load=0.75KN/m Wall Support=230Mm Concrete grade=M20, Steel grade=fe415 2.EFFECTIVE SPAN OF BEAM: Effective Span =c/c of support = 3230 mm 3.SIZE OF BEAM: Effective depth=Span/12 =269.16mm , Say 270mm Breadth=1/2d  =135mm Clear cover=25mm,Use 16 mm ø D=303 mm, Say 310 mm D=310mm d = 277mm, Say 280mm […]


Optimizing long-span girders can save scares resources.  The following are a few conceptual options to optimize girders.  Optimization for a real project requires careful evaluation of alternate options, considering  interdisciplinary aspects along with purely structural ones. 1  Moment diagram, stepped to reflect required resistance along girder 2  Steel girder with plates welded on top of […]