Bridge geometry - Computational Analysis and Design of Bridge Structures - page 551

y

External
distance Mainline

x

0

Parabola
or arc

Left width Right width

Total width

Figure 18.6 Transverse curve and local coordinate system.

Station:100′
2′ 9 1/3′′
Parabolic E:3/5′′
Crown width:13′ 4′′

1 . 5 0%

1.50%

2′ 7 7/30′′

2′ 7 7/30′′

15′ 15′

30′

(a) Station:200′

4′ 5 1/3′′

4′ 7 11/15′′

1.00%

2.50% 3′ 11 14/15′′

Parabolic E:3/5′′
Crown width:26′ 8′′

15′ 20′

35′

(b)

Station:400′
4′ 5 1/3′′

4′ 7 11/15′′

1.00%

2.50%3′ 11 14/15′′

Parabolic E:3/5′′
Crown width:26′ 8′′

15′ 20′

35′

(c)

Station:600′

0′′

1.50% 1.50%

−2 1/10′′ −2 1/10′′

Parabolic E:3/5′′
Crown width:13′ 4′′

15′ 15′

30′

(d)

Figure 18.7 (a-d) An example of key cross sections.