Experimental Study on Reinforced Concrete Column Incased in Prefabricated Permanent Thin-Walled Steel Form

Table 2

Specifications regarding CFT in national design codes.

Code	KBC				AISC				Eurocode 4
	2005		2009		1999		2005
	3% or above		1% or above		4% or above		1% or above		2%–9%
	20.5 MPa or greater		21–70 MPa		21–55 MPa		21–70 MPa		20–50 MPa
	415 MPa		440 MPa		415 MPa		440 MPa		450 MPa
Shape	□	○	□	○	□	○	□	○	□	○