| | POSICIÓN |
| CANTO (cm) |
| ANCHO NERVIO |
| BOVEDILLA |
| RESISTENCIA (N/mm2) |
| AMBIENTE |
| VERTIDO |
| LUZ MEDIA VIGAS |
a |  |
horizontal |
 |
22+5 |
 |
10 |
 |
hormigón |
 |
25 |
 |
I |
 |
cubilote |
 |
<4 m |
b |  |
inclinación <30% |
 |
25+5 |
 |
12 |
 |
poliestireno |
 |
30 |
 |
IIa |
 |
bomba |
 |
4-6 m |
c |  |
inclinación 30-60% |
 |
30+5 |
 |
15 |
 |
cerámica |
 |
35 |
 |
IIb |
|
|
 |
6-8 m |
d | |
|
|
|
 |
20 |
|
|
 |
40 |
 |
IIIa |
|
|
 |
>8 m |
e | |
|
|
|
|
|
|
|
|
|
 |
IV |
|
|
|
|
|