CIVIL ENGINEERING FORMULAS

FIGURE 2.1 (Continued)

b

2

H

H H H

h

h

h

1

b

c^2 a

aa a

2

a

2

b

B

BB

b

B

c^1

d^1

B 1

2

d

d d d

b

2

b

2

c^2

c^1

c^2

c^1

h

d

I

(Bd + bd 1 ) + a(h + h 1 )

r=

c 2 =II – c 1

I= (Bc 13 – bh^3 + ac 23 )

c 1 =

I

[Bd + a(II – d)]

ali^2 + bd^2

ali + bd

I= (Bc 13 – B 1 h^3 + bc 23 – b 1 h 13 )

c 1 =

aH^2 + B 1 d^2 + b 1 d 1 (2H – d 1 )

aH + B 1 d + b 1 d 1

1

2

1 3 1 2 1 2

Section Moment of inertia and section modulus Radius of gyration

B 1

2

15