Table of ContentsiiFigures4-1. Effect of a structure on wind flow ....................................................... 35-1. UT20 tower ......................................................................................... 67-1. UT20/30 weather tower ....................................................................... 87-2. Guy anchor locations ........................................................................... 97-3. Concrete base dimensions ................................................................. 107-4. Tower attached to the B18 legs ......................................................... 107-5. UT20/UT30 leg placement ................................................................ 117-6. RFM18 base dimensions ................................................................... 127-7. RFM18 flat roof mounting base ........................................................ 137-8. UTEYE eyebolt guy anchor .............................................................. 137-9. UTDK duckbill guy anchor being driven into the ground ................. 147-10. UTDUK duckbill in load-lock position ............................................. 147-11. Guy wire attached to tower ............................................................... 157-12. UT20/30 lightning rod and mounting bracket ................................... 167-13. Guy wire/turnbuckle attached to the UTEYE anchor ........................ 167-14. Ground rod and clamp ....................................................................... 177-15. Tower grounding clamp .................................................................... 187-16. Lightning rod ..................................................................................... 187-17. Crossarm mounting ........................................................................... 197-18. CMB200 Crossarm Brace Kit ........................................................... 207-19. CMB200 components ........................................................................ 217-20. Bracket selection ............................................................................... 22Tables7-1. Crossarm lengths and materials ......................................................... 197-2. Bracket Requirements ....................................................................... 22