Thomas Jefferson’s Estimate of Material Needed for Shadwell Milldam, [ca. 5 July 1822]
Estimate of Material Needed for Shadwell Milldam
[ca. 5 July 1822]
| Estimate. for milldam | ||||
| stretchers. 10. of 40 f. each reach across the river | ||||
| 8. tier of them (4. on each side) | 80. trees | |||
| tiers 50. to each course × 4 courses | 200. tiers1 | |||
| each of the 80 stretchers will give 1. | 80 | |||
| 120. more 10 f long, 5. to a tree | 120 | . | 24. trees | |
| 200 | . | 104. trees | ||
| the | stone pens | 10.f. | wide, 4 f. deep | |||
| inter dam | 2.f | |||||
| 12.f. | or 4 yds wide. | |||||
| each yard running measure = | 5 | ⅓ | yards | |||
| 133 | . | yards | ||||
| 666 | ||||||
| 44 | ||||||
| 710 | cubic yds stone | |||||
MS (CSmH: JF); on portion of reused address cover to TJ; entirely in TJ’s hand; with TJ’s Estimate of Tin Needed to Roof Monticello, 5 July 1822, on verso; undated.
1. Manuscript: “tyers.”