20.1 |
|
Fixed bridge |
|
20.2 |
|
Footbridge |
|
21 |
|
Horizontal clearance |
|
22 |
|
Vertical clearance above the plane of reference for elevations |
|
23.1 |
|
Opening bridge (in general) |
|
23.2 |
|
Swing bridge |
|
23.3 |
|
Lift bridge |
|
23.4 |
|
Bascule bridge |
|
23.5 |
|
Pontoon bridge |
|
23.6 |
|
Draw bridge |
|
24 |
|
Transporter bridge with vertical clearance below fixed structure |
|
25 |
|
Overhead transporter, Aerial cableway with vertical clearance Conveyor |
|
26.1 |
|
Power transmission line with pylons |
|
26.2 |
|
Power transmission line with pylons (very high voltage) |
|
27 |
|
Overhead cable, Telephone line, Telegraph line |
|
28 |
|
Overhead pipe |
|
29 |
|
Pipeline on land |
|