How to set up the position of a motorway gantry 

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arahman91
Posts: 1

Joined: 10/22/2013
Topic  How to set up the position of a motorway gantry       Flag »  Reply »

im a student studying Land Surveying in London, i was wondering if any land surveyors could give me the best and most accurate way they would set out the structure of a motorway gantry which is 62m long. The two pillars on each side have to be constructed within a +/- 2mm specification. The task is set out in a way that one side of the motorway will not be available to the surveyor. Which is the best way of actually setting out the correct position for the structures to be built in and be able to line up within 2mm from both ends. The motorway gantry has been pre constructed and will be put onto the motorway in one night. How would a surveyor set the positions up for the bolts? the only thing i got is setting out from a known coordinate on a local grid. What is a professionals view on this?

thank you for your time.

  Tuesday, October 22, 2013 at 7:27:59 AM

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