![]() ![]() The Type HA uniformly distibuted loading was introduced in 1945 and the concept of a Type HA and HB load was included in the 1954 edition of BS 153: Part 3A. The first standard vehicle load for highway bridges in the UK was introduced in 1922.īritish Standards introduced a traffic live load requirement in BS 153 Part 3 in 1923, which was later revised in 19.
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