Page 56 - Building Regulation and Design Guidelines - Structural (Grey Code)

SECTION 4 STRUCTURAL DESIGN GUIDELINES - STEEL STRUCTURES SECTION: 4 STRUCTURAL DESIGN GUIDELINES - STEEL STRUCTURES
4.1 INTRODUCTION 4.2.2
The guidelines in this section are applicable for steel structure and are intended
to provide minimum structural design requirements for steel buildings and
other structures fabricated and erected with structural steel. The guidelines are
intended to give a general idea of the basic requirements for steel structures
while designing structures within the CED Trakhees jurisdiction.
Engineers shall refer to the applicable codes for the detailed technical guidance
and requirements. It is anticipated that the use of these guidelines will result
in a uniform design and construction of buildings throughout projects in 4.2.3
CEDTrakhees jurisdiction.
Any requests for variations to the guidelines presented must be fully documented
and presented to the CED-Trakhees for review and acceptance prior to any work
commencement.
The design shall meet all relevant standards for safety, durability, fire resistance
and serviceability. The designer shall investigate alternative systems and shall
achieve optimized economical and constructible solution.
Sections in design guidelines for building structures shall be referred to where
indicated.
4.2 APPLICABLE CODES
The following codes are permitted for design of steel structures. Design codes 4.2.4
not listed in this document shall be submitted for review and approval prior to
adopting in the design. Consultant should ensure that selected design standards
are the latest editions and fully compatible with CED’s design regulations &
guidelines.
4.2.1 DEAD AND LIVE LOADS
1. BS 6399: Part 1 ‘Loading For Buildings: Code of Practice for Dead
and Imposed Loads’.
2. BS 6399: Part 3 ‘Loading For Buildings: Code of Practice for
Imposed Roof Loads’
3. ASCE 7: ‘Minimum Design Loads for Buildings and Other
Structures’, Chapter 3 ‘Dead Loads’ and Chapter 4 ‘Live Loads’
4.3
4. Adopted dead and live loads shall satisfy recommendations of the
Dubai Municipality, CED - TRAKHEES and other relevant statutory
authorities.
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SEISMIC LOADS
1. UBC 1997, Volume 2, ‘Structural Engineering Design Provisions’,
Division IV ‘Earthquake Design’
2. Seismic zone shall be considered as per Dubai Municipality latest
Circular and Trakhees-CED evaluation.
3. For special steel structures and tall buildings, relevant sections of
structural design guidelines for building structures are applicable.
WIND LOAD
1. ASCE 7: ‘Minimum Design Loads for Buildings and Other Structures’
- Chapter 6. Design shall be based on basic wind velocity of 45 m/s.
2. For all structures where wind loads are applied as per codes, other
directions than the two orthogonal ones to be investigated for
ultimate and serviceability limit states. The same shall be carefully
studied for irregular buildings.
3. For special steel structures and tall buildings, relevant sections of
structural design guidelines for building structures are applicable.
4. BS 6399-2 “Loading for Buildings – Part 2: Code of practice for
wind loads” is accepted for industrial structures only.
DESIGN CODES
1. BS 5950 “Structural Use of Steel Works in Buildings”” is accepted
only for steel works where the seismic forces are not governing
the design.
2. AISC 360: Specification for Structural Steel Buildings
3. UBC 1997, Volume 2, ‘Structural Engineering Design Provisions’.
4. IBC ‘International Building Code’, excluding seismic design
provisions.
5. For design of concrete elements, refer to the list of design codes as
defined within clause 2.4.4.
PERFORMANCE CRITERIA - ANALYSIS, DESIGN AND DETAILING
The following sections present the analysis, design and detailing criteria
with particular reference to normal and low to medium rise steel buildings
and structures. For special steel structures and tall steel buildings, detailed
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