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I'm not sure if this is a case of the old way being better or if it's them not knowing how to utilise modern technology (if you can even consider optical plummets modern these days). The other end of the string should be attached to the ceiling or wherever it is level with the top of the vertical surface. Step 2-Testing the Vertical Alignment The plumb bob should then be attached to the string. Should I be using a plumb bob like they do? Is there any benefit to doing it that way? These guys have over 40 years experience and seem to be very stuck in their ways when it comes to technology. To begin, cut a length of string that extends from the floor to the top of the surface whose alignment you want to check. Because I'm new to this I occasionally have a hiccup and it takes a lot longer which is when they start telling me I'm doing it wrong. I'll also say that it takes these guys more than 5 minutes to setup a tripod like this.
#PLUMB BOB TRICKS PC#
Asked my PC about it and he couldn't explain why it's a better method and just said something about other surveyors looking stupid swinging the legs of their tripods around. Now, I've just started my first surveying job this week and the PC and survey manager are telling me I shouldn't use that method and insisting that I hang a plumb bob from the tribrach instead. From what I've seen this is the most common method of getting the tripod roughly over the point. So I was taught at college to set up a tripod by first planting one leg, then holding the other two legs and looking through the optical plummet to move the tribrach directly over the point. Guy I was working with turned to his boss and says. It is used to determine exact vertical alignments, such as when straightening a doorway, wall or other tall vertical structure that. Here's what you need: Check Front and Rear Toe with Plumb Bobs First put a true. just so everything's right from the beginning. Suspension setup is a crucial factor in achieving peak handling. When the inevitable winds and storms of life roll in and my mind starts dancing a ‘non’ merry tune. The presence of the water acting on the surface of the bob creates resistance to movement. The water stops the plumb bob swinging around. they say they'll send a small crew over to help get us started. You stick the plumb bob into a bucket of water. The plumb weight is always shaped symmetrically so it hangs evenly, and it often comes to a point to allow accurate reading and marking. It consists of weight (the plumb) hanging at the end of a strong string. The head building guy was bothering us everyday. The plumb bob is the oldest, simplest, and still one of the best tools for establishing plumb.
#PLUMB BOB TRICKS INSTALL#
we had to make the space for the real elevator guys to come in and install their stuff. 100 year old evevator only ran up 4 floors. they were making the top floor useful office space. So naturally one week later I'm helping the head maintenence guy frame up a new elevator shaft?Īnyways. Went to work on one commercial job as a trim carp. A 'target sheet', a bold 'X' drawn at right angles on a piece of cardboard with a Sharpie with a small hole in the middle that allows location of the finer marks on the floor, placed on the spot makes alignment by eye easy even when looking down from ten feet. Consistency being more important than absolute measurement. To speed things up, ask a helper to steady the plumb bob while you adjust the position of the string. The key to accuracy is to wait for the bob to stop swinging. above the floor and center the point exactly over the intersecting lines. In electrical work anything +/- a sixteenth is more than good enough. To learn how to use a level, suspend the plumb bob about 1/2 in. Laying out light locations on the floor and transferring it to the ceiling with a bob is fast and accurate.Trick I teach my helpers is how to quickly steady the bob by skimming the floor and then lifting it an eighth or so to get it dead on. The question is then how much would a plum bob move on the surface of the Earth between the first position A: and the second position B: Using these as approximations with the force 1, the. Certainly not people actually intending to use them to build anything.I keep a small plumb bob, brass but nothing special, in my tool box. Answer (1 of 5): Gravity is proportional to mass and proportional to the inverse square of the distance. indeed How do you plumb a straight line To make a plumb line, rub a string with colored chalk and tack it to the top of the wall. Unless I'm confused those prices are from a 'fu-fu' site catering to yuppies who want bragging rights, mantle decorations and office accent pieces. Plumb Bob Magnetic - 10.7 oz(305g) Plumb Rite With 14.5 ft(4.5m) String,Line Reel Used in De Construction Can Automatically Stretch the Line and Quickly Stabilize the Plumbob 4.4 out of 5 stars 79 -19 21.99 21.
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