| | HORMIGON-ACERO |
| CANTO (cm) |
| LUZ (m) |
| BOVEDILLA |
a |  |
HA-25/ 20/ P/ I - B-400-S |
 |
17+4 |
 |
<3.5 |
 |
de hormigón |
b |  |
HA-30/ 20/ P/ I - B-400-S |
 |
20+4 |
 |
3.5-4 |
 |
de poliestireno |
c |  |
HA-35/ 20/ P/ I - B-400-S |
 |
22+4 |
 |
4-4.5 |
 |
cerámica |
d |  |
HA-25/ 20/ P/ I - B-500-S |
|
|
 |
4.5-5 |
|
|
e |  |
HA-30/ 20/ P/ I - B-500-S |
|
|
 |
5-5.5 |
|
|
f |  |
HA-35/ 20/ P/ I - B-500-S |
|
|
 |
5.5-6 |
|
|