## Biaxial bending

The effects of biaxial bending may be checked using Expression (5.39), which was first developed by Breslaer.

where

MEdz,y = Design moment in the respective direction including second order effects in a slender column MRdzy = Moment of resistance in the respective direction a = 2 for circular and elliptical sections; refer to Table 5 for rectangular sections

Continues page 41

Figure 9a

Column design chart for rectangular columns d2 /h = 0.05

M/bh fck

M/bh fck

Figure 9b

Column design chart for rectangular columns d2 /h = 0.10

Figure 9b

Column design chart for rectangular columns d2 /h = 0.10

Figure 9c

Column design chart for rectangular columns d2 /h = 0.15

Kr =1

0.05

0.10

0.15

0.20

M/bh fCk

0.25

0.30

0.35

0.40

Figure 9d

Column design chart for rectangular columns d2 /h = 0.20

Figure 9d

Column design chart for rectangular columns d2 /h = 0.20

Figure 9e

Column design chart for rectangular columns d2 /h = 0.25

1.3 1.2 1.1 1.0 0.9 0.8 0.7 2: 0.6 0.5 0.4 0.3 0.2 0.1 0

/ AJyk/bhfck

0.05

0.10

0.15

M/bhhfck

0.20

0.25

0.30

+4 -1

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### Responses

• brhane filmon
How to construct a biaxial chart for rectangular co;lumn?
7 years ago
• stephen
How can i read bi axial charts for column design?
5 years ago
• nob
How to draw biaxial chart for column design?
4 years ago
• pete
How to read biaxle chart of column?
4 years ago
• iines
How to read from biaxial charts?
4 years ago
• annika
How to construct design chart for columns?
3 years ago
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How to construct design charts eurocode?
3 years ago
• LEMPI
How to read reinforced column chart?
3 years ago
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How to I read chart for rc column design?
3 years ago
• Abraham
How to read Biaxial column interaction chart?
2 years ago