Page 56 - Building Regulation and Design Guidelines - Structural (Grey Code)
P. 56
SECTION 4 STRUCTURAL DESIGN GUIDELINES - STEEL STRUCTURES SECTION: 4 STRUCTURAL DESIGN GUIDELINES - STEEL STRUCTURES
4.1 INTRODUCTION 4.2.2 SEISMIC LOADS
The guidelines in this section are applicable for steel structure and are intended 1. UBC 1997, Volume 2, ‘Structural Engineering Design Provisions’,
to provide minimum structural design requirements for steel buildings and Division IV ‘Earthquake Design’
other structures fabricated and erected with structural steel. The guidelines are 2. Seismic zone shall be considered as per Dubai Municipality latest
intended to give a general idea of the basic requirements for steel structures Circular and Trakhees-CED evaluation.
while designing structures within the CED Trakhees jurisdiction.
3. For special steel structures and tall buildings, relevant sections of
Engineers shall refer to the applicable codes for the detailed technical guidance structural design guidelines for building structures are applicable.
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 WIND LOAD
CEDTrakhees jurisdiction.
1. ASCE 7: ‘Minimum Design Loads for Buildings and Other Structures’
Any requests for variations to the guidelines presented must be fully documented - Chapter 6. Design shall be based on basic wind velocity of 45 m/s.
and presented to the CED-Trakhees for review and acceptance prior to any work
commencement. 2. For all structures where wind loads are applied as per codes, other
directions than the two orthogonal ones to be investigated for
The design shall meet all relevant standards for safety, durability, fire resistance ultimate and serviceability limit states. The same shall be carefully
and serviceability. The designer shall investigate alternative systems and shall studied for irregular buildings.
achieve optimized economical and constructible solution.
3. For special steel structures and tall buildings, relevant sections of
Sections in design guidelines for building structures shall be referred to where structural design guidelines for building structures are applicable.
indicated.
4. BS 6399-2 “Loading for Buildings – Part 2: Code of practice for
wind loads” is accepted for industrial structures only.
4.2 APPLICABLE CODES
The following codes are permitted for design of steel structures. Design codes 4.2.4 DESIGN CODES
not listed in this document shall be submitted for review and approval prior to 1. BS 5950 “Structural Use of Steel Works in Buildings”” is accepted
adopting in the design. Consultant should ensure that selected design standards only for steel works where the seismic forces are not governing
are the latest editions and fully compatible with CED’s design regulations & the design.
guidelines.
2. AISC 360: Specification for Structural Steel Buildings
4.2.1 DEAD AND LIVE LOADS
3. UBC 1997, Volume 2, ‘Structural Engineering Design Provisions’.
1. BS 6399: Part 1 ‘Loading For Buildings: Code of Practice for Dead
and Imposed Loads’. 4. IBC ‘International Building Code’, excluding seismic design
provisions.
2. BS 6399: Part 3 ‘Loading For Buildings: Code of Practice for
Imposed Roof Loads’ 5. For design of concrete elements, refer to the list of design codes as
defined within clause 2.4.4.
3. ASCE 7: ‘Minimum Design Loads for Buildings and Other
Structures’, Chapter 3 ‘Dead Loads’ and Chapter 4 ‘Live Loads’
4.3 PERFORMANCE CRITERIA - ANALYSIS, DESIGN AND DETAILING
4. Adopted dead and live loads shall satisfy recommendations of the
Dubai Municipality, CED - TRAKHEES and other relevant statutory The following sections present the analysis, design and detailing criteria
authorities. with particular reference to normal and low to medium rise steel buildings
and structures. For special steel structures and tall steel buildings, detailed
110 111