Page 37 - Building Regulation and Design Guidelines - Structural (Grey Code)
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SECTION: 2 STRUCTURAL DESIGN GUIDELINES – BUILDING STRUCTURES SECTION: 2 STRUCTURAL DESIGN GUIDELINES – BUILDING STRUCTURES
and 20 milli-g for office buildings. Damping ratio should but not limited to the following:
under no circumstances exceed 2.0% unless additional
special damping devices are used. For buildings subject 1. Index sheet with contents and page numbers.
to coupled modes response, the torsional velocity due 2. An introduction containing the project ID and briefly outlining the
to 10 years wind shall be limited to 3 milli-rad/s or as submission purpose together with the list of drawings, calculations,
recommended with credible relevant reference. reports, etc.
5. For buildings with irregular façade shapes and where 3. Design philosophy; reference Codes, complete design criteria and
a potential noise expected to occur, the tonal noise assumptions for loads, height of building, number of floors, etc.
generated as part of vortex shredding mechanism shall be
properly addressed by wind specialist. The consultant and 4. Column load calculations by area method & reaction method.
the wind specialist are solely responsible to undertake the 5. Stability analysis for wind and seismic loads including checking for
necessary study and to propose any effective remedial allowable drifts. For wind induced accelerations, a check for human comfort
measures to resolve the problem. criteria is to be enclosed.
6. Slabs & Beams shall be checked for long term deflection 6. Loads on columns, shear walls including wind and seismic moments are to
as per the code governing the design. be marked in the copy of foundation layout for critical load cases.
7. Slabs & Beams shall be checked for lateral forces impact. 7. Serviceability checks for deflection, crack width to be included where
applicable.
8. Vibration and oscillation of building structures should
be limited to avoid discomfort to users and damage to 8. Reinforcement calculations for beams, slabs, columns and shear walls. In
contents. Reference to specialist literature shall be made case if design is done using software, sample pages are to be enclosed.
as appropriate.
9. Soft copy of all the calculations copied in a CD as well as software models
2.5.2.5 SOFTWARE shall be submitted. All software models shall be run and free of errors. At
the time of joint review, the consultants shall bring a laptop PC installed
The following commercial structural software packages are with the design software to check the building model. In case modelling
commonly used structural design tools and are accepted by has been done using ETABS, SAFE, SAP, ROBOT, etc., consultant shall
CED for structural analysis and design. Computer software not submit only extract pages in PDF format of selected important input and
listed below shall be submitted for review and approval prior to output data that may facilitate the review process.
adopting in the design.
10. In case of specialised works such as post tensioned slabs, tent structures,
Acceptable popular commercial structural software packages: large span timber structures, prefabricated steel structures, the structural
ETABS, SAFE, SAP2000, ROBOT, STRAND, STAAD, PROKON. designs and drawings for these works shall carried out by specialised
consultants having an approved valid trade licence from Dubai Municipality.
2.5.2.6 UNIT SYSTEM
A copy of their Trade Licence needs to be enclosed. These drawings after
All structural calculations, computer output, technical reports, checked by consultant shall be stamped and signed by them and submitted
specialist consultant recommendations and drawings shall to CED along with a guarantee letter stating that they have verified the
be presented in SI unit system. All dimensions on structural designs of the specialist contractor and they take full responsibility for the
drawings shall be presented in millimetres. same.
11. Soil investigation report certifying all soil parameters conducted by an
2.6 STRUCTURAL CALCULATIONS approved soil specialist agency as per CED’s geotechnical guidelines.
All calculations shall be submitted in soft copy in pdf format arranged in sequence 12. To resist the Seismic loads, joint ductility, confinement of concrete and
according to the index sheet. The Structural Calculations shall generally include
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