I'd say that will cause problems...
IPVMU Certified | 05/27/15 10:06pm
Is it possible to stabilize the poles with guy wires or stiffeners?
IPVMU Certified | 05/27/15 10:41pm
Any guidelines on how to figure out what size pole is needed?
Each pole will have 3x cameras and a 20" x 20" x 6" box electronics and batteries.
22mm really isn't that a super high zoom, but I need A LOT more information.
1) What type of analytics? - if it's simple tripwire/motion type stuff, you probably will be okay. If you're trying to capture license plates or do more advanced object identification, and there's a lot of sway on the poles, it could be a problem.
2) Is this a windy environment? The more wind, the more sway.
3) What are you sinking the poles into? Dirt, Cement? That's going to affect sway
4) Does it have to be wood posts? Can you use steel poles or something with more rigidity?
5) Do you have the opportunity to install one as a test and see if it'll work as designed?
These are questions I would ask. 15' high really isn't that high off the ground, so depending on the factors above, you might not have as much sway as you think.
4 x 4 Wooden TImbers will weather and will warp over time as well...Been there...
For 20 months you should be fine unless it is significantly windy. Even though they are temporary I would still put cement in that hole. Just cut them off even with the ground when finished.
IPVMU Certified | 05/28/15 01:36am
IPVMU Certified | 05/28/15 02:29am
I would recommend a larger dimension of lumber or a different material all together. I have never used 4x4 post before but have used 8x6 with cameras mounted at 10' on a 12' post. Even with 8x6 small winds would create shakey video.
IPVMU Certified | 05/28/15 02:42am
Keefe, Thank you. That is the quote that will convince the client.
Pro Focus LLC | 05/28/15 01:32pm
What you haven't mentioned is the type of wood you are planning to use. Different species have very different strengths. My gut feeling (not experience) tells me that 4x4 #2 pine from Home Depot wouldn't be well suited for this application. I have a similar setup as a test rig with the 4x4 cemented into a bucket. Obviously this is much different than one buried in the ground. But on a flat cement surface with a single box cam, it still catches the wind pretty easily. Add in another camera and an outdoor box and my guess is that you will have more drag than your post can support without movement.
We always use 4"x4" aluminum powder coated posts for 10' high to the top of the post. If it were to be 15' I would use 6"x6" aluminum post. You should be able to get them from an aluminum fabricator pretty reasonably. This would be way better than using wood...
Any pole at a certian height will have some type of movement.
IPVMU Certified | 06/04/15 11:55am
Out of curiosity, why do the poles have to be timber? Is it a cost issue due to the temporary nature of the poles?
If timber must be used and you're worried about camera shake, would the client consider a tripod?