Design Note:1. A transition section

Design Note:1. A transition section shall be provided at the embankment-bridge junction. Technical requirements are as follows: 1.1 Length of transition section between embankment and abutment is L=5+(H-0.6)×2 (H is embankment height). 1.2 The packing and compaction standard of the surface layer of subgrade bed in transition section at junctions between embankment and abutment shall be the same as that of adjacent surface layer of subgrade bed; the part below flood level plus 0.5m in transition section shall be filled with permeable materials, when the part above flood level plus 0.5m in transition section shall use the same filler as the surface layer; the compaction standard of filling material below surface layer of subgrade bed in transition section shall be in conformity with requirements of adjacent bottom layer of subgrade bed. When original ground is higher than the flood level, all packing under surface layer of subgrade bed in transition section shall use the same filler as the surface layer, and their compaction standard shall meet the requirements of the bottom layer of subgrade bed in code. When particles sizes of packing of upper and lower layers are quite different, a granular filter material (bed course) with thickness of 0.3m shall be laid on the interface.1.3 When the structures have been finished firstly, the construction of transition section and embankment nearby shall be done after the strength of structure concrete meets the design requirement. 1.4 The foundation pit behind abutment is backfilled with concrete.1.5 In the area closed to abutment where it is difficult for large roller machine to access, small vibrating roller machine must be used to ensure full compaction. 2. Unless otherwise indicated, the dimensions in the drawing are measured in m."