China concrete structure design code [code for design of concrete structure] (GB 50010-2002) and the United States housing construction, concrete structure norms (ACI 318-05) and provisions (ACI 318R-05) [Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05)] between the relatively large differences. China to regulate use of the theory of probability-based limit state design method to measure reliable indicator of the reliability of structural components, using a coefficient of design expression of the design. Norms and the United States based on reliability theory, the design expression nor breakdown coefficient. Generally speaking, the United States used in the design of concrete structure of the reliability of expression and China have certain similarities norms, but used in the design of materials and design load intensity level, as well as the value of the expression of reliability with China norms the difference can not be ignored.
1. Housing construction in the United States, "GM building codes," referring to the states respectively from the area or related to the law of the state of accepted norms. In these specifications, and provides a comprehensive housing design, construction, testing the principle of partial basic requirements. Then, by the GM building codes in the corresponding provisions of the relevant structures that regulate their invoke component. Therefore, the United States said its own norms ACI 318-05 for the GM building codes an integral part. By the year 2000, the United States is generally believed that the GM building codes total of the following four: (1) to standardize the construction officials and managers Federation (Building Officials and Code Administrators, or BOCA) issued in the name of "national building codes" (National Building Code, or NBC); (2) building codes to the International Committee of the South (Southern Building Code Congress International, as SBCCI) issued in the name of the "standard building codes" (Standard Building Code, or SBC), (3) the international construction Officials Meeting (International Conference of Building Officials, or ICBO) issued in the name of "unified building codes" (Uniform Building Code, or UBC), and (4) international norms Committee (International Code Council, or ICC) developed the "International Building norms "(International Building Code, or IBC). State laws passed by the United States were chosen four common building codes in the one in the state as a law regulating the use of force. By the year 2000, all parties concerned consultations by the United States, decided in the United States unified national norms by IBC to replace three other common building codes, that is, the IBC (2003) the United States as the only "generic building codes" use. However, states need to switch to IBC legal norms recognized, the other three are still a common use of building codes overlap period, but no longer for a new round of amendments. Based on the above, we can see that ACI318-05 standard said: "The law was adopted building codes GM" in the present that still means the four standardized; states to be accepted legal norms of the IBC, "legal been adopted General building codes "will only regulate the IBC