highway code
9.The present code 《Standard for application of geosynthetics in hydraulic and hydro-power engineering》 (SL/T225-98) in our country was similar to the American code 《FHWA-NHI-00-043》 of American Federal Highway Administration on design of the reinforced retaining wall, but there were some differences between the two design codes, especially for the design of the geogrid reinforced retaining wall.
10.With reference to DIN 1045 (1978)"Concrete And Reinforced Concrete Design And Construction" and BS 5400 Part 4 (1983) "Code of Practice for Design of Concrete Bridges", the author explains the basic principles for lapping of bars and puts forward views of modification for relevent provisions stipulated in the "Specification for Designing Highway Reinforced Concrete And prestressed Concrete Bridges And Culverts" (JTJ023-86).

