CHAPTER 4 APPENDIX
| Appendix 4-1 | Iowa DOT Warehouse Stock Numbers for Surveying Supplies |
| Appendix 4-2 | National Geodetic Survey Markers |
| Appendix 4-3 | U.S. Geological Survey Markers |
| Appendix 4-4 | Reserved for Future Use |
| Appendix 4-5 | Figure 1. Reference Points for Two-Lane Roadway
Figure 2. Reference Points on a Curve Figure 3. Reference Points for Divided Highway |
| Figure 5. Reference Points Placed in Sidewalks
Figure 6. Reference Points for Land Corners Figure 7. Reference Points Using Total Station Instruments |