Specification of Deformed Bars 13 SNI L12M
Concrete steel screw threaded through the rollers on the surface (the pattern was different depending on the manufacturer) to obtain bonding (bonding) is better between reinforcement and concrete used in almost all applications compared to plain reinforcement with the same cross-sectional area. Screw shape in the form of fins increase the adhesive power to resist movement of the rod relative to the concrete.
This product is more robust screw. Because the screw has hit resistance at least 400 MPa, while the plain only has resistance to a minimum pressure of 240 Mpa.
It is recommended for longitudinal reinforcement or reinforcement lengthwise, so that became a major power. Besides, the process is also made easier because it does not need much to cut or bend. Sedangkn for plain concrete iron can be used for tulangangan shearing, stirrups and begel. But for the pursuit of perfection, as a whole could use a threaded rebar.