5th. Attach fore and back guys and foot-ropes to each frame, the latter fastened with a timber-hitch round the standards below the ledgers.
6th. Pass across the fore guys, passing those of the narrow frame between the horns of the broad frame.
7th. Launch and lock the frames.
8th. Send out temporarily two road-bearers and by their means and with the aid of two men working on the crutch of the bridge get the fork-transom in position.
9th. Send out remainder of road-bearers, resting the whole on the fork-transom.
10th. Place planks (chesses); rack down; put up hand-rail.
ESTIMATE OF TIMBER.
| Kind of Bridge. | No. of Spars. | Length in Ft. | Diam. in Ins. | Purpose. | |
| At Tip. | Mean. | ||||
| Single-lock (30-ft. Span). | 4 | 24 | 7 | Standards. | |
| 1 | 15 | 10 | Fork-transoms. | ||
| 2 | 15 | 6 | Transoms. | ||
| 4 | 15 | 4 to 6 | Ledgers and shore-transoms. | ||
| 4 | 20 | 3 | Diagonal braces. | ||
| 10 | 20 | 6 | Balks. | ||
| 4 | 20 | 3 | Ribbands. | ||
If the stores are at hand and ready for use, 1 non-commissioned officer and 16 men on each side should complete the bridge in a little more than an hour.