IS 6533 : Part 2 : 1989 Code of practice for design and construction of steel chimneys Part 2 Structural aspects

1 Scope

1.1 This standard (Part 2) covers terminology, loading,materials, structural design, construction, inspection, maintenanceand painting of both self-supporting and guyed steel chimneys (withor without lining) and their supporting structures.

1.2 The design of chimneys of cross section other than circularis not included in this standard.

1.3 Chimneys in pairs, rows or groups, and those near otherstructures of comparable height may be subjected to exceptionalwind force and particularly wind induced oscillations greater thanthat allowed for in this standard. Appropriate expert adviceshould, therefore, be obtained in these cases.

1.4 The purpose for which the chimney is required will determinewhether lining, insulation or cladding is necessary.

2 References

IS 226 :1975 Structural steel (standardquality)

IS 456 :1978 Code of practice for plain andreinforced concrete

IS 800 :1984 Code of practice for generalconstruction in steel

IS 814 :Covered electrodes for metal arc welding of structuralsteel:

Part 1 : 1974 For welding products other thansheets

Part 2 : 1974 For Welding sheets

IS 816 :1969 Code of practice for use ofmetal arc welding forgeneral construction in mild steel

IS 875 :Code of practice for design loads (other thanearthquake) for building structures:

Part 1 : 1987Dead loads - Unit weights of building materials andstored materials

Part 3 : 1987Wind loads

IS 961 : 1975Structural steel (high tensile)

IS 1030 : 1982Carbon steel castings for general engineering purposes

IS 1149 : 1982High tensile steel rivet bars for structural purposes

IS 1363 : 1984 Hexagon head bolts, screws andnuts of product grade C

IS 1364 : 1983 Hexagon head bolts,screws and nuts of product grades Aand B

IS 1367 :Technical supply conditions for threaded steelfasteners:

Part 1 :1980 Introduction and general information

Part 3 :1979 Mechanical properties and test methods forbolts, screws andstuds with full loadability

Part 6 :1980 Mechanical properties and test methods fornuts withspecified proof loads

IS 1395 : 1982Low and medium alloy steel covered electrodes for manualmetal arc welding

IS 1477 : Codeof practice for painting of ferrous metals inbuildings:

Part 1 :1971 Pretreatment

Part 2 :1971 Painting

IS 1893 : 1975Criteria for earthquake resistant design of structures

IS 1929 : 1982Hot forged steel rivets for hot closing (12 to 36 mmdiameter)

IS 2062 : 1984Weldable structural steel

IS 2141 : 1979Galvanized stay strand

IS 2155 : 1982Cold forged solid steel rivets for hot closing (6 to 16 mm diameter)

IS 2266 : 1970Steel wire ropes for general engineering purposes

IS 2309 : 1963Code of practice for the protection of buildings andallied structures against lightning

IS 3613 : 1974Acceptance tests for wire-flux combinations forsubmerged-arc welding of structural steels

IS 3640 : 1982Hexagon fit bolts

IS 3757 : 1972High strength structural bolts

IS 5369 : 1975General requirements for plain washers and lock washers

IS 5370 : 1969Plain washers with outside diameter 3 X inside diameter

IS 5624 : 1970Foundation bolts

IS 6419 : 1971Welding rods and bare electrodes for gas shielded arcwelding of structural steel

IS 6560 : 1972Molybdenum and chromium-molybdenum low alloy steelwelding rods and base electrodes for gas shielded arcwelding

IS 6586 : 1972Recommended practice for metal spraying for protection of iron andsteel

IS 6610 : 1972Heavy washers for steel structures

IS 6623 : 1972High strength structural nuts

IS 6639 : 1972Hexagon bolts for steel structures

IS 6649 : 1972Hardened and tempered washers for high strengthstructural bolts and nuts

IS 7002 : 1972Prevailing torque type steel hexagon locknuts

IS 7280 : 1974Bare wire electrodes for submerged arc welding ofstructural steels

IS 8500 : 1977Weldable structural steel (medium and high strengthqualities)