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Design and drawing review minutes B-7 Project name: new steel 1550mm cold rolling project No.: ZT002 meeting time 2009-2-25 meeting place cold rolling project site conference room presided by Cao Shengqin list of participants attached Recorder Xu Lizhu meeting theme: design and drawing review meeting meeting meeting content on February 25, 2009, the cold rolling project project department organized a meeting of design and technical submission for the construction of the construction drawings of unclear parts of the construction work. On February 25, 2009, the Cold Rolling Project Department organized and held a technical briefing on the design of Cold Rolling Project Area I. The participants in the meeting included Qiu Jian, Cold Rolling Project Manager of CMSDI, civil engineering designers, the Chief Engineer of Cold Rolling Project Design, and representatives of Cold Rolling Project Department, Cold Rolling Project Supervision Department, and Cold Rolling Project Management Department of XX Metallurgical Group. . I. Design Briefing: Qiu Jian, the cold rolling project manager of CMT Southern Design Institute, made a detailed design briefing from six aspects, including design intention, structural design features, process arrangement and process requirements, precautions in construction, technical measures, and so on. Second, the drawings will be examined: Twenty Metallurgical, Supervision Department, Cold Rolling Project Department to put forward in writing the existence of drawings need to be resolved, *** with the existing drawings will be examined, Metallurgical South Yan Tao for the construction of the problems raised on the construction drawings for the Q&A. Now the summary is as follows: Drawings will be examined record project name new steel 1550mm cold rolling project cold Ⅰ standard unit twenty metallurgical serial number drawing number drawing problems will be examined opinion 105-30400Y1 50-30400Y6 05-30400Y11 in the column foundation excavation project, foundation in 5 ~ 6m to reach the holding layer, but did not reach the design elevation, the column base base elevation can be lifted upward? Under the premise of reaching the design requirements, can be raised, the principles are as follows: ① 1 area of raw material storage base elevation ≤ -6.000m; ② 2 and 3 area base elevation ≤ -4.5000m and can not affect the construction of equipment foundations 205-30400Y1 50-30400Y6 05-30400Y11 now the column cup design for the round shape, can be changed to square? Can be changed to square No. Drawing No. Drawing problem review comments 305-30400Y1 50-30400Y6 05-30400Y11 plant column base electrical grounding (05_30400Y1-1 and 05_30400A5-3) diagrams, the two diagrams reflect the different, the use of the diagram shall prevail? The structural drawing 405-30400Y1 50-30400Y6 05-30400Y11 Drawing 05_30400Y1_2 in which the steel pipe columns are inserted into the cupped section has reinforcing bars welded to the lower portion, but there is no spacing or diameter of the bars. See drawing 505-30400Y1 50-30400Y6 05-30400Y11 Can the Φ16 welded reinforcement mesh on the upper surface of the column be changed to Φ12 reinforcement mesh without changing the spacing? According to the original drawing construction 605-30400Y1 50-30400Y6 05-30400Y11 now the cold rolling plant floor elevation from the original 66.3m to 66.6m, the floor is raised, columns, equipment foundations should also be raised by 300mm? plant content of all structures ± 0.000 are 66.600705-30402Y1 drawings 05 _ 30402Y1_1 General description (mill equipment foundation formwork drawing) in the deformation joints are caulked with asphalt twine, can it be changed to foam board? Can be changed to foam board 805-30400Y6 in the drawing design of 2A_226 column of the burial depth of -11.6m, and the nearby equipment foundation base plate at -9.8m, because the foundation probe 118 # said in the place of -3.1m is the strong weathering conglomerate, can be lifted to the elevation of the bottom of the column to the elevation of the foundation base plate with the vicinity of the elevation of the same? Can be raised, and the mill underground oil reservoir floor poured together, the foundation short column shortened accordingly 905-30401Y1 can be put forward in the second area of the stepping beam and pickling machine equipment foundation of the depth of the base plate, to facilitate the second area of the A column base earth excavation; can provide pickling equipment foundation excavation plan to your 1005-30400Y72B, 2C column steel columns of the lower extremity columns embellishments, Fig. 05_30400Y7_2,3 The "member table" in Fig. 05_30400Y7_2,3 is labeled as Φ273×8 and Φ245×8, but the steel frame detail drawing is labeled as Φ325×8, please clarify which specification is used? (2B), (2C) column lower column limb spandrel adopts ∮273×81105-30400Y7 Fig. 05_30400Y7_10, 11 of AGJ_3, 3a of the lower limb column half door crane support beam section height is labeled as 750mm, but the node Fig. 05_30400Y7_16 11 node figure is labeled as height of 1000mm, please confirm; according to the node Fig. 16 height of 1000mm 1205-30400Y7_16, please confirm; according to the node Fig. 16 height of 1000mm 1205-30400Y7_16, please confirm; according to the node Fig. In the height of 1000mm1205-30400Y2 05-30400Y7 05-30400Y12 steel columns of the upper column header, column body stiffening plate are all Q345B material? All are Q345B1305-30400Y72Columns reserved for the second phase of construction of the steel column head is not indicated interface height, its web, flange plate are 18mm, 25mm, respectively, reserved for the form of spanning the roof beam is concrete 2A_2B span? Please clarify so that the sampling of the column head; web 18mm1405-30400Y2 05-30400Y7 05-30400Y12 Is the material of the connection plate at the interface between the steel column head and the roof beam Q235B? The material of the connection plate at the interface is Q235B15 Fig. 05_30400Y1_1 requires that the compaction coefficient of backfill is 0.94, can the compaction coefficient of the backfill of the building be set to 0.94, and can the compaction coefficient of the backfill of the building be set to 0.94? The compaction coefficient of the backfill with buildings on it is set at ≥0.90, and the compaction coefficient of the backfill without buildings is set at ≥0.85. The project name of the project is Xinsteel 1550mm Cold Rolling Project Cold Ⅰ Bidding Unit Cold Rolling Supervision Department Serial No. Drawing No. Drawing Problems Opinion of the Review 16 Cold Rolling Zone 2 and Zone 3 design requirements for the production of crane beams and auxiliary bridges, for the span of ≥24m, according to the span of the 1/1000 arch, and Cold Rolling Zone 1, the design requirements for the production of crane beams and auxiliary bridge, for the span of 24m, according to the 1/1000 arch. The design drawings of Cold Rolling Zone 1 do not require this, should it be supplemented as in Zone 2 and Zone 3? If there is no explanation in the drawing of Zone 1, the arch should be 1/1000 of its span when it is ≥24m.17 05-30400Y6-2 Acid mill rolls should be unified to 3φ16 if the reinforcement of LL-1 beam section is labeled as 4φ16 in the foundation drawing, while 3φ16 is shown in the drawing and the tie hooks are also 3. The mislabeling of 4×16 in the 1-1 section should be changed to 6×16.18 05-30400Y6-2 Acid mill rolls should be unified to 3×16 if the reinforcement is not required in the design drawing of Zone 1, such as Zone 2 and Zone 3. 30400Y6-2 Acid mill rolls between the foundation plan in the LL-1 beam section reinforcement diagram labeled as 4φ16, while the drawing shows 3φ16, and the pull hook is also 3, should it be standardized as 3φ16? If the drawing of the first zone is not delivered according to the requirements of the drawings of the second and third zones of the construction of the 19 Cold rolling the second zone crane beam design requirements -600×25 -1850×25 -500×25 while the design of the first zone requires that -600×25 -2155×16 -500×20 Please ask whether the thickness of the lower flange plate of the crane beam in the first area is changed to 25, and the thickness of the web plate is changed to 18. Construction according to the design of the drawings. 20 Main plant in the first area of the foundation layout plan bis in the entrance step beam and pickling equipment foundation, the main plant in the third area of the foundation layout plan in the exit step beam equipment foundation are in conflict with the plant columns foundation plan position, and there is no detailed drawing, is there any impact? No effect 21 Main plant 1, 2, 3 No effect 21 main plant 1, 2, 3 area connecting parts of column foundation are combined foundation, should consider setting settlement joints? 1, 2 area foundation bearing capacity is not less than 450KPa, while 3 area foundation bearing capacity is not less than 500KPa, combined foundation is feasible? Can not consider settlement joints, foundation bearing capacity requirements according to the ground investigation report to provide 22 column foundation cup grouting is based on the detailed drawing, using C30 micro-expansion fine stone concrete? Detailed drawings shall prevail.23 Foundation concrete bedding zones 1 and 3 with C10 plain concrete, zone 2 with C15 plain concrete, is it uniform? Can be standardized to C10 plain concrete