The method of measurement and bid item numbers for the retaining walls described above are summarized below.
| Bid Item Number | Description | SD Drawing | Method of Measurement |
| 9140178 | Retaining Wall (Reinforced Concrete Cantilever) | SD 7.01 | Square Foot |
| 9140179 | Retaining Wall (Masonry Cantilever) | SD 7.02 | Square Foot |
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