BEST METHOD FOR HIGH RISE CONSTRUCTION - GPS? ZENITH/VERTICAL OPTICAL PLUMMET? RESECTION
Greetings from Malta.Malta
To those out there who had an experience of high rise construction, i would like to share some of your advice for the young generations.
I am a qualified 28 year old land surveyor working with a construction company in Malta.
I will be involved for construction of a high rise construction project and it will consist of 4 towers of different floor levels. The height tower is 21 floors from the road. You need to keep into consideration that the facade will be constructed with glass material thus the accuracy should be within its tolerance when setting out the edge of concrete slab and also the lift should be kept vertically straight against deflection. As you can see from the development model, the construction is straight forward.
This is the first experience that I am going to get involved on such a big project and thus I need some professional advises to make a proper decision.
Attached are some pictures of the project for a better idea and also the location of the site from google map. You can type on google maps/search: Mriehel Gasan and you will find the exact site location.
I am not sure which method I am going to use for this project. After an intensive research I have not yet made my mind up for the best land surveying practices method for a high rise building do carry out the setting out of points and transfer the datum levels on each floor in terms of accuracy and precision and time efficiency.
Since there will be 1 crew (1 land surveyor which is me and 1 assistant/laborer) assigned on this project, do you think that using GPS is faster? Or still believe with the optical plummet? I have the feeling that the process of using the software spider or any other kings of software's is a long process because every time I do the setup and after starting the antenna to receive the signals, then I have to go all the way down the stairs to my mobile office do run the software, then back again near the gps/smart total station to commence the setting out. Am I right?
The purpose of the spider software is to adjust the control points to use the post processing method? I thought maybe I could use the RTK system.
I am really looking forward to hear from you guys. Thanks for your time and interest.
This Content Originally Published by a land surveyor to Land Surveyors United Network
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ok. Thanks for helpful suggestions
i used the GNSS with static mode plus special sensors to measure the inclination in the building
in another projects where GNSS signals quality is poor i used a special method called zenith line application mounted at total station , and i can run it manually