Question regarding FAA 1A surveys

Williwaw, post: 356589, member: 7066 wrote: I'm working on 4 proposed wireless tower sites right now. In the preliminary design and permitting stage and I've been asked to provide FAA 1A letters on the 4 locations, prior to any clearing or construction dirt work, much less a final design. Some of these sites are not GPS friendly at all until there has been at least clearing done and I'm just a little concerned. All the ones I've done up until now have been on existing towers. I'm a bit loath to certify an elevation and GP on something that's still on the chalk board.

Is this standard practice?

We do them and label them as proposed.

David C. Newell RPLS LS CFM, post: 356595, member: 6347 wrote: We do them and label them as proposed.

Makes perfect sense. Thanks!

A 2C would also work (depending on your requirements). This gives you a little more leeway on the accuracy of the position. It's been a few years since I've done one, but it seemed like we would do a 2C "Proposed" for a planned site and then come back and measure the completed tower to do the tighter accuracy required 1A.

I prepare them all the time, i label it proposed structure, with lat, long & elev.