ONESTEEL duragal sections

More documents

Recommendations

Info

INTRODUCTION DESIGN CAPACITY ACITY TABLES The DuraGal Design Capacity Tables have been prepared in accordance with AS 4100-1998 - Steel Structures. Research was undertaken at the Centre for Advanced Structural Engineering, The University of Sydney [1,2] to confirm the application of those member design rules in AS 4100 applicable to the design of coldformed sections for the determination of DuraGal Design Capacities. The tables in this publication use the method recommended in [6] for calculating the segment length for full lateral restraint (FLR) of Rectangular Hollow Sections (RHS). OneSteel Market Mills Pipe & Tube commissioned the Centre for Advanced Structural Engineering, Civil Engineering, The University of Sydney to undertake an analytical study of the lateral buckling of RHS. The study was conducted as RHS sections rarely buckle laterally, yet AS 4100-1990 Steel Structures required a reduction in the section capacity to account for lateral buckling in RHS members with comparatively closely spaced braces. The results of the study are contained in [6] and show that the rules in AS 4100 give conservative values of FLR for RHS. The results of the analytical investigation have been confirmed by a testing program. [8] Design capacity tables have been included for the 2.3 and 2.8 mm thick C450L0 material produced by OneSteel and are headed Non-Standard thickness. These tables are provided to allow designers to select an equivalent capacity section when converting to a OneSteel standard DuraGal section. Design capacities for sizes in thicknesses 1.6 to 6 mm are contained in tables headed Standard Thickness. CONNECTIONS A research program [7] has been completed at the Centre for Advanced Structural Engineering, The University of Sydney, to develop rules for the design of connections in cold-formed steel hollow sections manufactured by OneSteel. The program included DuraGal and also covered sections less than 3.0 mm thick. Standards Australia, Amendment No. 3 to AS 4100-1990 Steel Structures, incorporated this research work and allowed the use of hollow sections to AS 1163, thinner than 3mm thick. PLASTIC DESIGN Another research program [10] completed at the Centre for Advanced Structural Engineering, The University of Sydney, has shown that plastic design methods can be used in the design of portal frames using DuraGal hollow sections. Typically a 15% increase in strength design capacity can result. This increase can be of most benefit in rigid frames, ie low rise portal frames such as those used in commercial/ industrial sheds, garages, farm buildings, etc, where deflection due to design loads is not a critical limit state. The research was partially funded by CIDECT, an international committee for the development and study of tubular structures, and will eventually be incorporated in their series of design aids. OneSteel is developing a range of proprietary fittings suitable for use in the above types of buildings. For more information ring Freecall 1800 1 STEEL (1800 1 78335) or Freefax on 1800 101 141. DuraGal DESIGN CAPACITY TABLES DCTDHS/06 vi for STRUCTURAL STEEL HOLLOW SECTIONS MARCH 2002
GRADE DuraGal RHS is manufactured by a unique cold forming process which ensures that it complies with the requirements of AS 1163 to both Grade C350L0 and Grade C450L0. Grade and Mechanical Properties Grade Minimum Minimum Minimum elongation as a Yield Tensile proportion of gauge length Stress Strength of 5.65√S o f y f u MPa MPa % C350L0/C450L0 450 500 16 L0 indicates that DuraGal has Charpy V-notch impact properties as specified in AS 1163-1991. AS4100 - 1998 Steel Structures, in section 10, permits L0 grades to have the following minimum service temperature: Thickness - mm Lowest One Day Mean Ambient Temperature - o C t < 6 -30 SURFACE FINISH External In-line Hot dip galvanizes over a prepared metal surface to produce a fully bonded coating with a minimum average coating mass of 100 g/m 2 or approximately 14.3 microns thick, in accordance with AS/NZS 4792:1999, Hot-dip galvanized (zinc) coatings on ferrous hollow sections, applied by a continuous or a specialized process. A surface conversion coating is applied to protect the galvanizing prior to fabrication. Internal Black steel surface. SIZE RANGE Square Rectangle 20 x 20 to 100 x 100 50 x 20 to 150 x 50 DCTDHS/06 DuraGal DESIGN CAPACITY TABLES MARCH 2002 for STRUCTURAL STEEL HOLLOW SECTIONS vii
Page 1 and 2: DuraGal ® design capacity tables f
Page 3 and 4: CONTENTS Page Foreword ............
Page 5: PREFACE DuraGal RHS is manufactured
Page 9 and 10: Length Size Mill Cut Length Toleran
Page 11 and 12: LIMIT STATES TES DESIGN USING THESE
Page 13 and 14: PROPERTIES OF STEEL The properties
Page 15 and 16: M ry M s M sx M sy M z M * M * m M
Page 17 and 18: PART 1 SECTION PROPERTIES 1 PAGE D1
Page 19 and 20: D1.2.1.1 Torsion Constants The tors
Page 21 and 22: D1.2.3.1 Compactness In Clauses 5.2
Page 23 and 24: D1.3 PROPERTIES FOR FIRE DESIGN To
Page 25 and 26: Figure D1.4.2: Telescoping Data DCT
Page 27 and 28: DCTDHS/06 DuraGal DESIGN CAPACITY T
Page 33 and 34: TABLE D1.3-1(A) FIRE ENGINEERING DE
Page 35 and 36: TABLE D1.3-2(A) FIRE ENGINEERING DE
Page 37 and 38: TABLE D1.3-4 FIRE ENGINEERING DESIG
Page 39 and 40: TABLE D1.4-2 DuraGal TELESCOPING IN
Page 41 and 42: PART 2 DETERMINATION OF DESIGN ACTI
Page 43 and 44: Figure D2.2: First-order Analysis a
Page 45 and 46: PART 3 SECTION CAPACITIES 3 PAGE D3
Page 47 and 48: D3.2.3 Design Moment Section Capaci
Page 49 and 50: [ BLANK ] DCTDHS/06 DuraGal DESIGN
Page 51 and 52: TABLE D3.1-2 DESIGN SECTION CAPACIT
Page 53 and 54: PART 4 MEMBERS SUBECT TO BENDING 4
Page 55 and 56: D4.1.3 Segment Length for Full Late
Page 57 and 58:
Table D4.1.5(1) Values of (M sx /M
Page 59 and 60:
A rectangular hollow section is the
Page 61 and 62:
2. Check the shear capacity of the
Page 63 and 64:
End bearing for b d < 1.5d 5 d5 b b
Page 65 and 66:
D4.4 BENDING AND BEARING INTERACTIO
Page 67 and 68:
D4.5 CALCULATION OF BEAM DEFLECTION
Page 69 and 70:
DCTDHS/06 DuraGal DESIGN CAPACITY T
Page 71 and 72:
TABLE D4.3-1(A) DESIGN WEB CAPACITI
Page 73 and 74:
TABLE D4.3-2(A) DESIGN WEB CAPACITI
Page 75 and 76:
TABLE D4.3-4 DESIGN WEB CAPACITIES
Page 77 and 78:
PART 5 MEMBERS SUBECT TO AXIAL COMP
Page 79 and 80:
According to Clause 6.3.3 of AS 410
Page 81 and 82:
In all cases L e / L > 0.5 (i) Chor
Page 83 and 84:
[ BLANK ] DCTDHS/06 DuraGal DESIGN
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
PART 6 MEMBERS SUBJECT TO AXIAL TEN
Page 95 and 96:
D6.3 EXAMPLE 1. A tension member wi
Page 97 and 98:
TABLE D6.1-3 DESIGN CAPACITIES FOR
Page 99 and 100:
PART 7 MEMBERS SUBJECT TO COMBINED
Page 101 and 102:
If an appropriate second order elas
Page 103 and 104:
Determination of δ s Members with
Page 105 and 106:
D7.4 COMBINED BENDING AND AXIAL COM
Page 107 and 108:
(b) Out-of-plane capacity where φM
Page 109 and 110:
D7.4.3.2 Member Capacity 14 . 14 .
Page 111 and 112:
D7.5.2.1 Section Capacity For The v
Page 113 and 114:
D7.6 BIAXIAL BENDING For a member s
Page 115 and 116:
From Figure D7.3(1) the moment ampl
Page 117 and 118:
D7.7 EXAMPLES Example 2.0 Braced Be
Page 119 and 120:
Then φM rx * N = 118 . ⎛ ⎞ φM
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
[ BLANK ] DCTDHS/06 DuraGal DESIGN
Page 131 and 132:
PART 8 MAXIMUM DESIGN LOADS FOR BEA
Page 133 and 134:
D8.2.2 Serviceability Limit State D
Page 135 and 136:
D8.5 OTHER LOAD CONDITIONS The valu
Page 137 and 138:
(b) Use of the Tables: Strength Lim
Page 139 and 140:
DuraGal DESIGN CAPACITY TABLES DCTD
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187:
[ BLANK ] Courtesy of Econo Steel r
show all

ONESTEEL duragal sections

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?