Sunday, May 3, 2009

Whether engineering calculator is necessary or helpful in conducting land survey,if so, why?

Can a ordinary calculator will not do any better for conducting land survey. Why a engineering calulator when the same work can be taken from a ordinary calculator. Please reply.

Whether engineering calculator is necessary or helpful in conducting land survey,if so, why?
Because land suverying requires a lot of computation using trigonometry, conversion from degrees, and generally being accurate to tight tolerances.
Reply:I have been in the land surveying business for a few years now and from my own experince you need a good (meaning expensive) programmable calculator, or even a field computer (something that looks like a hand held computer). Of course one could simply use a $20 scientific calculator for almost all calculations (since it is mostly trigonometry and geometry), but only if you have to calc some very simple stuff and from time to time- it gets overwhelming and the calcs start to add up really quickly. Also, once you leave the realm of plane surveying, you need the "good stuff" to deal with curvatures and variables.


An iconic survey calculator, that was used until recently by most guys, is the HP 48 SX or the HP 48 GX (more memory). Today something like the TDS Recon is used. The HP is a true expandable scientific RPN (reverse Polish notation) calculator, not for sale anymore (eBay), the TDS one is a hand held Windows Mobile running computer.
Reply:emma01 is correct a surveyor needs a lot of intricate calculations to do the job properly constant values are of of deem importance and these values and applications varies from different countries i.e in the u.s they measures their angles in degrees minutes seconds of an arc but in some countries they use gradients.
Reply:Engineers are not used to work with ordinary calculator.


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