6.2　Supporting Frame

6.2.1　Bed mortar method shall be adopted for installation of base plate of collum of framework，with tolerance of-0.5mm for elevation at top surface of base plate and 0.1/1000 for horizontal levelness.The elevation of bottom plate of column shall be measured instead of column by level and steel ruler with tolerance of±1.0mm.

6.2.2　The transversal centerline and longitudinal centerline of column during installation shall be set based on transversal centerline and longitudinal centerline of sinter machine，which shall be adjusted，and checked by steel ruler with tolerance of 2.0mm.The verticality of column shall be adjusted，and checked by steel ruler and thread pendant with tolerance of 1.0/1000.

6.2.3　For framework in the middle part，the single plates at every section shall be installed first，after which the longitudinal beam will be installed.During installation of single plate，the difference of width and diagonal between upper and lower part shall be adjusted and measured by steel ruler，with tolerance of 5.0mm for width and tolerance of 5.0mm for diagonal.

6.2.4　The achor bolts shall be tightened after the alignment and leveling of framework of sinter machine.Fixed column shall be welded to the base plate after the alignment and leveling of all framework of sinter machine.For non-fixed column，the column shall be put on the base plate，square stopper should be welded at both sides of base plate for positioning the column.The longitudinal displacement shall be allowed for expansion of framework，and the preset thermal expansion gap for framework installation shall meet the design technical document.

6.2.5　Welding quality of framework shall meet the requirements of design technical document；if not required in design technical document，it shall be in compliance with requirements for appearance quality standard for third-class weld seam in current national standard GB 50205 Code for Construction and Acceptance of Steel Structure Engineering.

6.2.6　Welding material of framework shall match the base metal as specified in design，which shall be dried and stored according to the manufacturer's manual and welding process document.

6.2.7　The installation of high strength bolt shall meet the requirements in current national standard GB 50205 Code for Construction and Acceptance of Steel Structure Engineering.