Idris, MahendraKurniawandy AlexFatra Warman2013-07-272013-07-272013-07-27rio andikahttp://repository.unri.ac.id:80/handle/123456789/4809According to SNI 07-2052-2002 in tensile test on concrete reinforcing steel rolled skin should not be removed, so it is not profitable for institutions that provide services because does not have the tensile test machine with a large capacity. This study was conducted to find out the effect if the diameter of the specimen is reduced in tensile testing. This test compares the applicable standard SNI 07-2052-2002 with the following diameter rebars SNI 07-2529-1991 and ASTM E8 M, to find a comparison the value of the yield and tensile specimens. SNI 07-2052-2002 mention that yield value for U 40 can not be less than 390 N/mm2 and tensile values for U 40 is not less than 500 N/mm2. Based on research, the use of standard SNI 07-2529-1991 and ASTM E8 M if viewed from the value Yield (390-480 N/mm2) and Tensile (600-688 N/mm2) still resides in the Standard SNI 07-2052-2002 range.othertensile testyield stresstensile strengthstudent Paper Post Degree