CIVIL ENGINEERING FORMULAS

B

B

z

P

A

A

P

l

l

x

b

b z

x

b y

y= x

b

y

y y

h h

h h

6 P

h^2 Ss

2

3

=k (const)

h

Rectangle:

width (y) var

-iable, depth

(h) constant

Rectangle:

width (z) var

-iable, depth

(y) variable Plan:

cubic parabola

Elevation:

cubic parabola

Plan:

triangle

Deflection at A:

Elevation:

rectangle b=^6 Pl

h^2 Ss

f=^6 P

bE

y^3 = x

6 P

kSs

l

h

h=

z=ky

b=kh

6 Pl

bSs

3

3

23

b

z

y

FIGURE 2.17 Beams of uniform strength (in bending).

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