University of Sheffield
Design of Portland BuildingConcept design and outline
Department of Civil & Structural Engineering
Nabeel Jafri Vishal KrishnanJohn Muramya
Anuj RamdasMuhammad Shah
GROUP 8 BRIEF 1
Department of Civil & Structural Engineering
Contents
Introduction Structural schemes considered for project Major differences between the design schemes Recommendations on the chosen design scheme Considerations leading to layout Load transfer path Conformance with design briefs Preliminary member sizing Brief description of method of execution Aesthetics Questions
John M.
Vishal K.
Nabeel J.
Anuj R.
Bilal S.
Department of Civil & Structural Engineering
Introduction
• Site• Ground conditions• The Building– Basement– Ground floor– Residential floors
Department of Civil & Structural Engineering
Structural Scheme
• Choice of material – Steel / Concrete• Structural schemes– Simple construction– Continuous construction
• Common elements in the two design schemes– Structural Layout– Foundation– Retaining wall– Aesthetics
Department of Civil & Structural Engineering
Major differences betweenthe schemes
Simple Continuous
Beam / Colum connection Simple design Increased stiffness- to ensure serviceability in long spans
Column sections Smaller column sections Bigger sections especially exterior columns
Connection cost Economical More Costly
Analysis Simple – optimized choice of element sections
Complex global analysis – Optimization is difficult
Joints Do not develop moments - other members of the structure are not affected
Full moment transfer
Department of Civil & Structural Engineering
Recommendations on selection of scheme
• When strength of the structure governs design, simple construction should be adopted.
• When stiffness (serviceability) governs design, greater economy is generally achieved with simple construction.
• As the region in which the structure is to be designed is not a seismic active zone, continuous construction may not be required.
Department of Civil & Structural Engineering
Structural layout – Residential floors
Department of Civil & Structural Engineering
Structural layout – Ground floor
Department of Civil & Structural Engineering
Structural layout Basement
Department of Civil & Structural Engineering
Load transfer – Typical floor layout
Department of Civil & Structural Engineering
Load transfer - Basement
Department of Civil & Structural Engineering
Load transfer - Basement
Department of Civil & Structural Engineering
Conformance with design brief
Constraints :• Clear distance between columns at least 2.5m • Layout of parking space and access path • Location of columns between bays• Reasonable positioning of vertical structural
elements on the ground floor• No internal columns in the residential flats• All the perimeter columns widths are to be limited
to 250mm
Department of Civil & Structural Engineering
Structural layout – Ground floor
Department of Civil & Structural Engineering
Structural layout Basement
Department of Civil & Structural Engineering
Structural layout – Residential floors
Department of Civil & Structural Engineering
Preliminary member sizing
• Residential beam size UKB 356x171x57
• Critical Beam in the basement UKB 1016x305x437
• Critical Column in the ground floor UKB 305x305x240
Department of Civil & Structural Engineering
Proposed method of construction
• Soil Excavation• Slope stability • Retaining Wall• Dewatering• Foundation• Basement • Basic Frame • Precast Flooring
Department of Civil & Structural Engineering
Aesthetics
• Glazing and Day lighting• Façade• Lifts• Balcony• Bracing• Natural Ventilation• Landscaping
Department of Civil & Structural Engineering
Questions?
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