钢筋分项工程技术交底（Technical report on reinforced concrete item）.docVIP

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钢筋分项工程技术交底（Technical report on reinforced concrete item）.doc

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钢筋分项工程技术交底（Technical report on reinforced concrete item）

钢筋分项工程技术交底（Technical report on reinforced concrete item） Technical clarification of reinforcement project Content: First, according to. 1, design drawings, drawings and summary of the reinforced concrete structure construction drawing plane table note 00G101 2, the current standard GB50204 - 2002 Two, engineering lofting graph The relevant drawings in the clinic building Three, technical data (a) stress the thickness of reinforced protective layer 1, the foundation beam is 35. 2, each layer of beam is 25; 25 pillars and should not be less than the diameter of longitudinal reinforcement. 3, each floor of the stairs, when the thickness of plate is less than or equal to 100 to 10; when the thickness of plate is more than 100 to 15. 4, when the shear wall thickness of the wall is less than or equal to 150 to 15; when the wall thickness is greater than 150 to 20. By not less than the corresponding grade of strength of concrete structures concrete pad or plastic pad to control the main reinforcement protection layer thickness should be 5, each member. (two bar) 1, reinforced by national standard within the specified range of grade I steel [Phi]: fy=210N/MM2, II: fy=310N/MM2 steel [phi]. 3, when using ordinary weld joints, weld width and height shall meet the requirements of specification (see other instructions) with E43 welding rod welding I grade steel, E50 welding II grade steel, the welding quality should be consistent with the requirements of BJG-18-65. In 4, a plurality of reinforcing steel a component to lap, lap steel shall not exceed 50% of the total number of bars in the same section (for the column and shear wall) or 25% (for beam), pitch lap staggered not less than 45d. 5, the need for on-site reinforced substitution, must abide by the following principles and agreed by the design engineer. (1) substitution strength (2) the net distance between the steel bars must meet the requirements of specification. (3) with high strength steel to replace the low strength