Antiskid scala gradus
- depictio producti
Scala antiskid etiam scalae scalae nominatae, plerumque tres typos habet;
scala duo foramina, scalae tres foramina gradus, et scalae gradus quatuor foramina.
Communis notitia talis est
Communis amplitudo: 48-3/4'', 60 longitudinum
Pre-galvanized vel HRP&O ferro, 13 et 11 METIOR
.125'' aluminium
16 coniecturam 304 SS .
Licitum tutum onus ostensum est in medio palmi in simplici trabe conligi
II gradus scalae foramina
| materia | tutum licita sarcina contracta (Ib.) | pondus lb./ln.ft | |||
| 16''span | 18''span | 20''span | 24''span | ||
| 11ga chalybe | 664 | 590 | 531 | 443 | 1.5 |
| 13ga chalybe | 508 | 451 | 401 | 338 | 1.1 |
| .125'' aluminium | 471 | 418 | 377 | 314 | 0.5 |
| 16ga immaculatam ferro | 345 | 306 | 276 | 230 | 0.8 |
3holes scala gradus
| materia | tutum licita sarcina contracta (Ib.) | pondus lb./ln.ft | |||
| 16''span | 18''span | 20''span | 24''span | ||
| 11ga chalybe | 474 | 422 | 379 | 316 | 1.2 |
| 13ga chalybe | 375 | 334 | 300 | 250 | 0.9 |
| .125 aluminium | 337 | 299 | 263 | 224 | 0.5 |
| 16ga immaculatam ferro | 260 | 231 | 208 | * | 0.7 |
IV scalae gradus foramina
| materia | tutum licita sarcina contracta (Ib.) | pondus lb./ln.ft | |||
| 16''span | 18''span | 20''span | 24''span | ||
| 11ga chalybe | 1138 | 1012 | 911 | 759 | 1.9 |
| 13ga | 862 | 766 | 689 | 574 | 1.4 |
| .125alumium | 810 | 720 | 649 | 540 | 0.7 |
| 16ga chalybe | 580 | 516 | 464 | 387 | 1..1 |
Notae: Haec onera calculi simplici trabe nituntur
In minimum elementum salutem = 1.67
Maximum claudicatio non excedit L / 240
Scala antiskid etiam scalae scalae nominatae, plerumque tres typos habet;
scala duo foramina, scalae tres foramina gradus, et scalae gradus quatuor foramina.
Communis notitia talis est
Communis amplitudo: 48-3/4'', 60 longitudinum
Pre-galvanized vel HRP&O ferro, 13 et 11 METIOR
.125'' aluminium
16 coniecturam 304 SS .
Licitum tutum onus ostensum est in medio palmi in simplici trabe conligi
II gradus scalae foramina
| materia | tutum licita sarcina contracta (Ib.) | pondus lb./ln.ft | |||
| 16''span | 18''span | 20''span | 24''span | ||
| 11ga chalybe | 664 | 590 | 531 | 443 | 1.5 |
| 13ga chalybe | 508 | 451 | 401 | 338 | 1.1 |
| .125'' aluminium | 471 | 418 | 377 | 314 | 0.5 |
| 16ga immaculatam ferro | 345 | 306 | 276 | 230 | 0.8 |
3holes scala gradus
| materia | tutum licita sarcina contracta (Ib.) | pondus lb./ln.ft | |||
| 16''span | 18''span | 20''span | 24''span | ||
| 11ga chalybe | 474 | 422 | 379 | 316 | 1.2 |
| 13ga chalybe | 375 | 334 | 300 | 250 | 0.9 |
| .125 aluminium | 337 | 299 | 263 | 224 | 0.5 |
| 16ga immaculatam ferro | 260 | 231 | 208 | * | 0.7 |
IV scalae gradus foramina
| materia | tutum licita sarcina contracta (Ib.) | pondus lb./ln.ft | |||
| 16''span | 18''span | 20''span | 24''span | ||
| 11ga chalybe | 1138 | 1012 | 911 | 759 | 1.9 |
| 13ga | 862 | 766 | 689 | 574 | 1.4 |
| .125alumium | 810 | 720 | 649 | 540 | 0.7 |
| 16ga chalybe | 580 | 516 | 464 | 387 | 1..1 |
Notae: Haec onera calculi simplici trabe nituntur
In minimum elementum salutem = 1.67
Maximum claudicatio non excedit L / 240