Tham khảo tài liệu 'code of standard practice for steel buildings and bridges part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 59 Established Column Lines J Building Line r Established Column Line 7777777777777777777 7 77 7 7777 7 - s s 7i 7 T LU y Maximum envelope for workinc points of all columns at any given elevation E 1 1 2 in. i 38 mm j for up to 300 ft. 90 000 mm I of lengthy add 1 2 in. 13 mm for each 100 ft. 30 000 mm of length with 3 in. 75 mm max. total. Column plumbness tolerance - See Figures and -f- Indicates column working points At any splice elevation envelope E is located within the limits Ta and Tt At any splice elevation envelope E may be located offset from the corresponding envelope at the adjacent splice elevations above and below by an amount not greater than 5 0 of the column length. Figure . Tolerances in plan at any splice elevation of exterior columns. the variation in alignment shall be acceptable if it is caused solely by variations in column alignment and or primary supporting member alignment that are within the permissible variations for the fabrication and erection of such members. b For a member that consists of an individual straight shipping piece that connects to a column the variation in the distance from the member working point to the upper finished splice line of the column shall be equal to or less than plus 3 16 in. 5 mm and minus 5 16 in. 8 mm . c For a member that consists of an individual shipping piece that does not connect to a column the variation in elevation shall be acceptable if it is caused solely by the variations in the elevations of the supporting members within the permissible variations for the fabrication and erection of those members. Code of Standard Practice for Steel Buildings and Bridges March 7 2000 AMERICAN institute of STeEl construction 60 d For a member that consists of an individual straight shipping piece and that is a segment of a field assembled unit containing field splices between points of support the plumbness elevation and alignment shall be acceptable if the angular variation of the working .
