CTRG meaning in Academic & Science ?

Answer: What is Centering mean?

Centring, centre, centering, or center is a type of formwork: the temporary structure upon which the stones of an arch or vault are laid during construction. Until the keystone is inserted an arch has no strength and needs the centring to keep the voussoirs in their correct relative positions. A simple centring without a truss is called a common centring. A cross piece connecting centring frames is called a lag or bolst.

Centring is normally made of wood timbers, a relatively straightforward structure in a simple arch or vault; but with more complex shapes involving double curvature, such as a dome or the bottle-shaped flue in a Norman-period kitchen, clay or sand bound by a weak lime mortar would be used. Shaping could be done by eye, perhaps with the help of a template, then stones or bricks laid against it. On larger works like a 19th-century pottery kiln this was impractical. The structure would be built round a post acting as a datum, and each course of stonework would be set at a distance from the datum.

When the centring is removed (as in "striking the centring"), pointing and other finishing continues.

reference

Full Form	Category
Centering	Academic & Science
Creative Team Resources Group	Business
Cendant Timeshare Resort Group	Business
Combat Technology Research Group	Computing
Collaboration Technology Research Group	Computing
Cancer Therapeutics Research Group	Medical
Clinical and Translational Research Group	Medical