Hiap Teck Venture Bhd. · MYX:HIAPTEK
Hiap Teck Venture Bhd — Technical Presentation (February 2017)
34 slides from Hiap Teck Venture Bhd's technical presentation, Feb 23, 2017
Slide 1: Steel Material Selection and Compliance with Structural Eurocodes
STEEL MATERIAL SELECTION AND COMPLIANCE WITH STRUCTURAL EUROCODES Chiew Sing Ping Professor and Programme Director of Civil Engineering SINGAPORE INSTITUTE OF TECHNOLOGY 23 February 2017
Slide 2: Use of Chinese Guobiao Steel in Singapore
Use of Chinese Guobiao Steel in Singapore
Slide 3: Scope of Presentation
Scope of Presentation 1. Why Material Selection is important ? 2. Steel Construction in Singapore 3. Why BC1: 2008 & 2012 ? - Overall framework - Consistent quality assurance - Interface to bridge material and design
Slide 4: Steel Construction in Singapore
Steel Construction in Singapore Design BS5950 Material Execution BS only BS5950
Slide 5: Steel Construction in Singapore (from April 2015)
Steel Construction in Singapore (from 1 April 2015) Design BS EN1993 Material Execution BS ENs only BS EN1090
Slide 6: Uniquely Singapore!
Uniquely Singapore ! Design BS EN1993 Material Execution BS ENs & Non-BS ENs BS EN 1090 (GB/JIS/ASTM/AS/NZS)
Slide 7: Uniquely Singapore!
Uniquely Singapore! Design Guide to bridge BS EN1993 Material and Design Material Execution BS ENs & Non-BS ENs BS EN 1090 (GB/JIS/ASTM/AS/NZS)
Slide 8: Steel Construction in Singapore
Steel Construction in Singapore • Sustainability, Productivity & Resiliency in the industry:- – Disruption in sand & granite supply – Increase productivity / Reduce migrant workers • BS5950/EC3 design codes – Only covers BS/EN materials by default • For e.g. BS5950/EC3 + Chinese GB Steel = ???
Slide 9: Alternative Steel Materials
Alternative Steel Materials ‘Alternative’ in Singapore’s context… • not manufactured to BS/EN • not covered in BS5950/EC3 by default • easily available (GB, JIS, ASTM, AS/NZS) • use to BS5950/EC3 design guide needed
Slide 10: Singapore Steel Market (2013)
Singapore Steel Market (2013) • Import of structural steel sections (plates, H & I sections, channels, angles, hollow sections) - China 588K Tonnes - Ukraine 488K Tonnes - Japan 472K Tonnes - Others 371K Tonnes (Korea, Thailand, Taiwan, Malaysia) • Export (Indonesia) 639K Tonnes TOTAL STRUCTURAL STE
Slide 11: Import of Fabricated Steelwork (2013)
Import of Fabricated Steelwork (2013) • Singapore imports fabricated structural steelwork from the following countries in 2013: – China, S$313M – Japan, S$284M – Malaysia, S$156M (subsidiaries of Singapore companies operating in Malaysia) – Germany, S$53M – Korea, S$50M TOTAL = S$856M
Slide 12: To promote Steel Construction…
To promote Steel Construction… Structural Steel Sections Net Imports $1082/T $819/T $945/T $857/T Local trends $811/T • Cheaper steel • Higher strength • Higher labour cost Source: IESingapore - lower MYEs, higher levies • National productivity drive • BCA’s push for sustainability – i.e. Green Mark
Slide 13: Some Basic Considerations
Some Basic Considerations • Steel material production standards are substantial documents covering mechanical, chemical, physical and other delivery conditions • One piece of steel is not necessary the same as another although they may look the same • We are not the only ones using steel • We never
Slide 14: Structural Performance Requirements
Structural Performance Requirements • Strength – ability to carry load • Ductility – ability to sustain permanent deformation without loss of strength • Toughness – ability to absorb damage without fracture • Weldability – ability to transfer load
Slide 15: Grand Challenge – Balance Performance!
Grand Challenge – Balance Performance ! Ductility Strength Toughness Weldability
Slide 16: Material Selection & Compliance: BC 1: 2008
Material Selection & Compliance BC 1: 2008 - Design Guide on use of Alternative Steel Materials to BS5950 (Approved Document under Singapore’s Building Regulations and enforced by BCA of Singapore) http://www.bca.gov.sg/Publications/others/Design_Guide_on_use_of_Structural_Steel.pdf http://www.bca.g
Slide 17: Material Selection & Compliance: BC 1: 2012
Material Selection & Compliance BC 1: 2012 - Design Guide on use of Alternative Structural Steel to BS5950 and Eurocode 3 (Approved Document under Singapore’s Building Regulations and enforced by BCA of Singapore)
Slide 18: Selection of Equivalent Steel Materials – Hong Kong & Macau
Material Selection & Compliance Selection of Equivalent Steel Materials – Hong Kong & Macau (Industrial Guide for Best Construction Practice in Hong Kong and Macau)
Slide 19: BC 1 - Objectives
BC 1 - Objectives • Allow a wider choice of steel materials to achieve greater economy and sustainability • Ensure product conformity, quality and traceability in materials from various sources Deliverables: • Use only adequate & reliable alternative materials to ensure public safety • Optimize usag
Slide 20: BC 1 – Overall Framework
BC 1 – Overall Framework Two Major Issues Adequacy? Reliability? Material Quality performance assurance requirements requirements
Slide 21: BC 1 – Overall Framework
BC 1 – Overall Framework BS EN, ASTM, AS/NZS, JIS & GB For e.g. IS, KS, API Not common route !!
Slide 22: Eurocodes Material Requirements
Eurocodes Material Requirements Trend is towards use of higher grade steel but more stringent performances are required. Reinforcing Steel Structural Steel A B C Normal strength High strength Yield strength > 460 400 to 600 ≤ 460 (MPa) ≤ 700 Modulus of 200 210 elasticity (GPa) ≥ 1.15 ≥ 1.05 ft/fy or
Slide 23: Current Design Issues and Bridging the gaps with BC1
Current Design Issues and Bridging the gaps with BC1
Slide 24: Column Buckling Curves in EC3
Column Buckling Curves in EC3
Slide 25: Column Buckling Curves in EC3
Column Buckling Curves in EC3
Slide 26: Issue 1 - Profile Steel Sheeting
Issue 1 - Profile Steel Sheeting Higher grades, e.g. AS1397 G450 commonly used in Singapore have nominal values which cannot comply with EC3 in terms of strength ratio and 10% elongation. Strength Standard Grade Nominal yield strength (MPa) Nominal tensile strength (MPa) ratio G450 450 480 1.07 AS 1
Slide 27: Bridging the Gap…
Bridging the Gap… Alternative Steel Design Code AS1397 BS EN1993 Grade G450 Gap
Slide 28: Bridging the Gap…
Bridging the Gap… Alternative Steel Design Code Design Guide AS1397 BC 1 BS EN1993 Grade G450 Gap
Slide 29: Issue 2 – Hot Finished Hollow Section
Issue 2 – Hot Finished Hollow Section
Slide 30: Hot-Finished ≠ Hot-Formed!!
Hot-Finished Hot-Formed !! Hot-Formed Hot-Finished
Slide 31: Bridging the Gap…
Bridging the Gap… BS EN Steel Design Code BS EN10210 BS EN1993 Gap
Slide 32: Bridging the Gap…
Bridging the Gap… BS EN Steel Design Guide Design Code BS EN10210 BC 1 BS EN1993 Gap
Slide 33: Conclusions
Conclusions 1. The design guide BC1 paves the way and serves as a bridge to allow alternative structural steel such as Guobiao steel to be used in Singapore. 2. Singapore is a small city state with limited resources and needs to focus on identifying the ‘gaps’ and bridge them by developing our own d
Slide 34: Thank you!
Thank you !
Hiap Teck Venture — Technical Presentation (February 2017) on 6ix