I have been asked to quote the stakeout of a proposed new roller coaster. The request is to stake 121 columns and anchor bolts for each column. I am hoping someone on this board has completed a similar project and can give me an idea of man hours.
They plan on tying the anchor bolts to the steel of each column and want me to spot them so they can be tied in the right place. Each column has a minimum of 8 bolts and a maximum of 12 bolts.
This is a huge job for a newly solo guy and want to make sure I have all of my ducks in a row.
Thank you for the help
Matt
Thats a tough one. A good place to start would be to tailor your quote to their schedule. see how many that they will be expecting to do per day and come up with a total number of days. I doubt you would need to be there the entire day but I would bet you will be there at least a half day each day that they need you. Post some pics if you get it.
Strictly from an excavators point of view. You will have to provide at least 2 if not 4 offset stakes per column for digging and setting of the forms for each column.
Even if those stakes don't get screwed up I would want you back so I could mark my template for each column for the required amount of bolts. The template would have to be oriented with the form and maybe an offset(s) for safety's sake.
I would plan on visiting each column at least 3 times, then as you go along, you will want to check the horizontal reference distances between columns to make sure everything is going to line up (hopefully it is laid out CL to CL).
Figure your regular rate, multiply by 3 and add 50%, then hope the damn thing bolts together:bored: :bored: o.O . Oh, check your E&O policy is updated good too!
Oh, and your solo career went out the window, you better have a damn good helper!
Everything jeffE said plus:
The holes on the plate on the bottom of the column are 1/8" diameter larger than than the bolt diameter. The templates jeff talks about, you better hope they are new and not used on a few jobs so the template holes are enlarged. I have seen everything from new well make templates to a laborer with a bag of anchor bolts sticking them into a wet pour concrete by eye by what he thinks is the offset from the crossing string lines.
Also there is bolt location. This comes in a couple of forms. They may want you to set the column axis lines with a pencil on the concrete. This way the laborers can "tune" the bolts so hopefully the columns fit when they are dropped in. The steel fabrication company we worked for to cover themselves wanted us to locate the center of the top of each bolt. We would prepare a drawing with the plan column grid, plan columns and plan bolt pattern and the as built foundation, bolt location with direction and distance from the as built bolts to the plan bolt location. We did the as built plan in the steel industry dimensioning system.
Another thing get the name and phone number of the steel detailer. If the plan you are given doesn't work it will be the detailer you will need to talk to. The detailer should be on speed dial and first name basis.
Lastly if they want you to certify plumbless of the columns after they are set. Forget about all the surveying ways to do this. Get yourself a Bazooka Plumb Bob.
Post some pictures if you can. please
You must be working for Ed Hart at the old KY Kingdom. I/we staked the CHANG roller coaster about 18 years ago. Of course it is no longer there. We staked each point 3 times. first to drill hole for column and install steel cage and fill with concrete, second to set a nail in concrete to build steel cage for cap, plate holding bolts was welded to steel for cap over this nail, third was a check before concrete cap was poured. we staked in the winter. It was about 5 degrees during the day. I recall we allowed about 2 hours per point.
