| 160 |
ECONOMICS OF BRIDGEWORK |
Chapter XVIII |
Table 18c
Résumé of Results of Computations
| Character of Structure |
Character
of Foun-
dations |
Depth of
Caisson
Footings |
Economic
Span
Lengths |
Remarks |
| Low-Level Combined |
Sand |
100' |
275' |
|
| Low-Level Combined |
Sand |
150' |
300' |
Shaft Batter |
| Low-Level Combined |
Sand |
200' |
325' |
1" to 1' |
| Low-Level Combined |
Sand |
250' |
350' |
|
| Low-Level D. T. R. R. |
Sand |
100' |
275' |
|
| Low-Level D. T. R. R. |
Sand |
150' |
310' |
Shaft Batter |
| Low-Level D. T. R. R. |
Sand |
200' |
360' |
1" to 1' |
| Low-Level D. T. R. R. |
Sand |
250' |
430' |
|
| High-Level Combined |
Sand |
100' |
275' |
|
| High-Level Combined |
Sand |
150' |
300' |
Shaft Batter |
| High-Level Combined |
Sand |
200' |
325' |
3/4" to 1' |
| High-Level Combined |
Sand |
250' |
350' |
|
| Low-Level Combined |
Rock |
50' |
250' |
Pneumatic |
| Low-Level Combined |
Rock |
100' |
300' |
Caissons |
| Low-Level D. T. R. R. |
Rock |
50' |
275' |
Pneumatic |
| Low-Level D. T. R. R. |
Rock |
100' |
325' |
Caissons |
| High-Level Combined |
Rock |
50' |
300' |
Pneumatic |
| High-Level Combined |
Rock |
100' |
350' |
Caissons |
| Low-Level S. T. R. R. |
Rock |
50' |
250' |
Pneumatic |
| Low-Level S. T. R. R. |
Rock |
100' |
300' |
Caissons |
| High-Level Combined |
Piles |
20' |
175' |
Pile Piers |
| Low-Level Highway |
Sand |
100' |
300' |
|
| Low-Level Highway |
Sand |
150' |
350' |
Shaft Batter |
| Low-Level Highway |
Sand |
200' |
400' |
1/2" to 1' |
| Low-Level Highway |
Sand |
250' |
450' |
|
| High-Level Highway |
Sand |
100' |
325' |
|
| High-Level Highway |
Sand |
150' |
350' |
Shaft Batter |
| High-Level Highway |
Sand |
200' |
375' |
1/2" to 1' |
| High-Level Highway |
Sand |
250' |
400' |
|
| Low-Level D. T. R. R. |
Sand |
100' |
350' |
Nickel-Steel |
| Low-Level D. T. R. R. |
Sand |
150' |
385' |
Super- |
| Low-Level D. T. R. R. |
Sand |
200' |
425' |
Structure |
| Low-Level D. T. R. R. |
Sand |
250' |
470' |
|
| Low-Level D. T. R. R. |
Sand |
100' |
290' |
|
| Low-Level D. T. R. R. |
Sand |
150' |
330' |
Low-Market |
| Low-Level D. T. R. R. |
Sand |
200' |
375' |
Unit-Prices |
| Low-Level D. T. R. R. |
Sand |
250' |
425' |
|
| Low-Level D. T. R. R. |
Sand |
100' |
275' |
|
| Low-Level D. T. R. R. |
Sand |
150' |
325' |
High-Market |
| Low-Level D. T. R. R. |
Sand |
200' |
375' |
Unit-Prices |
| Low-Level D. T. R. R. |
Sand |
250' |
425' |
|
These results are recorded graphically in Fig. 18h.
|