The strengthening technique used to strengthen a steel headgear are:
Strengthening a steel headgear is known to be one that can be be attained by adding shear connectors as well as giving either a new concrete slab or the use of a new topping over an already made slab.
The act of Welding additional plates on the 2 sides of existing columns is known to be a good tool that is often used for strengthening. This technique has helped to boast the load bearing capacity of a given steel column.
Therefore, The strengthening technique used to strengthen a steel headgear are:
Learn more about headgear from
https://brainly.com/question/24551579
#SPJ1