#1 Use a 1 foot layout rod with a 3 foot extension.
#2 Set your expensive robot 6.5 feet in the air on a rickety tripod with a twisted leg and busted head in 8 inches of gravel where the legs won't hold so you can see the impossibly short rod over the piles of dirt blocking your view into the garage footings.
#3 Watch Surveyor set 5/8" x 18" rebars at each building corner, noting that he took the time to adjust each rebar so that each was on grade and centered on the building corner. While surveyor watches in disbelief, use vice grips to remove surveyor's rebars and replace with mag-hubs.
#4 Randomly choose one of the mag-hubs to hold as your base point then use an uncorrected steel tape to check/adjust the position of the next mag-hub to match the plan dimension. Preferably you should choose two hubs that are on the short axis of the building.
#5 Resect off of the chosen two hubs using your office calculated positions. (It'll work great since you've made sure that the distance is correct.)
#6 Stake out and adjust remaining hubs as necessary. (Confident that all must be good since you've hit all the correct buttons in the proper order.)
#7 Relocate instrument and resect again with poor geometry so that you can stake the obstructed points with that ridiculously short layout pole. (Ignore the sobbing surveyor sitting in the shade watching the show.)
That's my rod and tablet in the right edge of the photo.
Note that the legs are fully extended, tips set too close together, and the left leg is twisted like a wet 2x4. They were using a 1 foot SECO pole with 3 foot extension. The bubble would've been 8-10 inches above the ground with the prism at 4 feet above ground. Below is a close up of the tripod head on the twisted leg.
The instrument is a Trimble SP something. I'm assuming that their compensators are set to "Hell No" or the instrument would've had to be re-leveled every few minutes.
I was working for the excavator and he was required to have the building corners marked before turning the site over to the wall contractor. Lord help the person that calls me and tells me that this house is out of square.
Keep us posted. It will be nice to be seated in the peanut gallery for this one. Getting ready to file liens for my recent staking job. Joy.
WTF????
Stephen Ward, post: 333597, member: 1206 wrote: The bubble would've been 8-10 inches above the ground with the prism at 4 feet above ground.
Though I can't justify anything else about he situation described, I'm assuming that they keep the bubble low so it can be seen while the rodman is on his knees. Note that it doesn't matter where on the pole the bubble is located -- if the pole is straight the bubble will indicate the amount of tilt regardless of whether it's mounted high or low. (And if the pole isn't straight, it also doesn't matter where the bubble is located, because it won't provide an accurate indication of anything anyway.)
Jim Frame, post: 333607, member: 10 wrote: Though I can't justify anything else about he situation described, I'm assuming that they keep the bubble low so it can be seen while the rodman is on his knees. Note that it doesn't matter where on the pole the bubble is located -- if the pole is straight the bubble will indicate the amount of tilt regardless of whether it's mounted high or low. (And if the pole isn't straight, it also doesn't matter where the bubble is located, because it won't provide an accurate indication of anything anyway.)
Given the condition of the tripod I would wonder when was the last time the rod bubble was checked for adjustment?
"Sometimes a mans got to do what a mans got to do" ~ John Wayne
Roadhand, post: 333633, member: 61 wrote:
"Sometimes a mans got to do what a mans got to do" ~ John Wayne
OSHA wouldn't like that photo much.
He's tied off. Theres a lifeline that runs along the cap
Construction workers do that kind of stuff all the time. I would have no problem with that set up as long as I was confident with the integrity of the safety cable. That is probably a 6' wide cap. I'd like to sit up there and have lunch.
Question is...how did you get up there?
imaudigger, post: 333641, member: 7286 wrote: Question is...how did you get up there?
I fly because I am Superman. Those guys ride up in a manlift, you can see the basket just to the right side of the cap
SPS930. They are the exact same gun as an S8, just a different color. They sell the much more expensive different colored ones to licensed people.
Roadhand, post: 333635, member: 61 wrote: He's tied off. Theres a lifeline that runs along the cap
Got it.
Jim Frame, post: 333607, member: 10 wrote: if the pole is straight the bubble will indicate the amount of tilt regardless of whether it's mounted high or low.
Good point. I hadn't stopped to consider that the vertical position of the bubble on the rod is unimportant.
In the crew's defense, they were doing it the way they were taught with the equipment they were given.
DAM new format - you have to quote every single time you respond to somebody.
Liked it a lot more when it was threaded.
Roadhand - OK, I thought that was re-bar for some sort of shear key.
Fun looking stuff.
Those are all old jobs. Here is what I am working on now. 9 Miles with 27 bridges and the longest one is just under a mile. At one point we cross the border fence and hug the intl. border with Mexico. So far we have moved a little dirt and drilled 23 shafts. Oh, and we have to be done by Fall 2017 .
[MEDIA=youtube]yJCdiJBDsB8[/MEDIA]
That is a LOT of changes.
I have been through there when I-10 was being built (70's) and then on the Sunset Limited in 2005.
I think I saw the train station a little after Spur 1966 on the left.
Looking forward to the photos.
Roadhand, post: 333635, member: 61 wrote: He's tied off. Theres a lifeline that runs along the cap
O, you mean that guy? Naw, I was concerned with the inst! If a wind came along, and the feet were not tied off, or sunk in mud, with a number 13 boot, it might shift a little!
🙂
N
I worked along that border at the Bus Barn. Been a few years. Interesting video. Still watching to see if anything looks familiar.
