What's rebar coupler ?

What's rebar coupler ?
Rebar couplers, also known as mechanical splices, are used in reinforced concrete structures to replace normal rebar lap joints. ... Each rebar coupler consists of a piece of rebar equipped with a thread and coupler sleeve at the right end as viewed in the direction of installation.
Why need  rebar coupler in construction site ?
Due to the growing technical challenges faced in today’s construction industry, traditional methods for connecting rebar, it provides such as lapping or welding. It is no longer the best method to connect rebar.
More and more construction codes are specifying a mechanical coupler because it provides better structural integrity while minimizing costs. Some of the benefits of using a mechanical coupler.
Which construction sites need rebar  coupler?https://www.facebook.com/rebarspclicingsystem/
1.INFRASTRUCTURE CONSTRUCTION
• Bridges
• Dams
• Power stations
• Road construction
• Wind energy
• Port facilities
• Oil sands projects
2.COMMERCIAL CONSTRUCTION
• Large-scale commercial developments
• Office towers
• Office and warehouse complexes
• Sports arenas
• Shopping malls and developments
• Theatres
• Performance arts facilities
3.INSTITUTIONAL CONSTRUCTION
• Hospitals
• Schools and colleges
• Cultural facilities
• Recreational facilities
• Senior centers
• Secure government buildings
• Police stations
• Prisons
4.RESIDENTIAL CONSTRUCTION
• High rise towers
• Multi-unit developments
• Single family detached homes
• Social housing