Surveying 101: Difference between revisions
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*Contractor's site level: Home Depot $240 - shoots vertical intervals - drop in stairstep. Vertical intervals are equal unless there is huge variation in slope. | *Contractor's site level: Home Depot $240 - shoots vertical intervals - drop in stairstep. Vertical intervals are equal unless there is huge variation in slope. Contractor's level is by Berger at Home Depot. | ||
*2 foot drop standard. May need to 4' at high slope like 10%. | *2 foot drop standard. May need to 4' at high slope like 10%. | ||
Revision as of 23:31, 17 June 2012
- Contractor's site level: Home Depot $240 - shoots vertical intervals - drop in stairstep. Vertical intervals are equal unless there is huge variation in slope. Contractor's level is by Berger at Home Depot.
- 2 foot drop standard. May need to 4' at high slope like 10%.
- Laser level - online - quickest is Forestry Supply has good options. Robust. No hassle. $7-800. Self-leveling laser - where you don't have to do a bubble to level. Must have 360 deg compass on it. Laser shoots 360 degrees. Shoots lo less than 1000 feet in shooting length. TopCon brand.
- Stick - Forestry Supply - 20' stick. Reads in 10ths of inch. Read the back of it, so distance from ground rather than absolute.
- http://www.forestry-suppliers.com/product_pages/View_Catalog_Page.asp?mi=5633&title=crain%AE+rectangular+fiberglass+telescoping+leveling+rod
- 16' is maximum length available: 43515; $113
- Weedwhacker + chainsaw. Offset 10' from trees if trees are in the way.
- Always go in one direction.
- Need a scale map of property.
- Procedure: Shoot vertical intervals first (slope). Set up horizontal intervals (following contours, creates aspect) later. Then put the grid down.
Design
- Chapter 2-3 Mollison - erosion pattern - dendritic pattern
Design: 5% slope not good for animals, west face not good.
Ask Parker on full soil report.