construction technology - trent global guidance/dec2012 exam... · 2012-11-22 · construction...
TRANSCRIPT
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Construction Technology D31TA
Dr Mohamed Abdel-Wahab [email protected]
www.mohamedabdel-wahab.co.uk Edwin Chadwick Building, Room 1.16
Revision
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Week Topic
1 Introduction 2 Structural requirements for buildings
Substructure 3 Foundations 4 Basements
Superstructure 5 Frames and suspended floors 6 External walls and roofs 7 Cladding 8 Services in buildings
Offsite construction
9 An overview of offsite construction 10 Case studies, practical issues & factory production 11 Low carbon construction 12 Revision
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Living shelter, keeping you warm, provide services (electricity, gas, telephone, and internet), comfort, parking, withstand disasters,...etc.
What do you need in your building?
Functions of a contemporary building
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What are materials used in the construction of structures?
Steel
Concrete
Composite material
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Strength
Compressive
Tensile
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How to test the quality of concrete arriving on-site?
Compressive strength Workability
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1. Spread the load exerted by the building over a sufficiently wide area
2. Divert or transfer the load to a strata deep in the soil
Functions of foundation
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Boreholes
How to know the composition of the soil?
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A thorough site investigation is paramount
before commencing construction work.
1. Site inspection
2. Desk study
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Types of foundations
Spread and pile foundations
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Pile foundations
Displacement piles
Pre-cast shell piles
Cast in-situ piles
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Replacement piles
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Frame choice
• Steel
• Pre-cast concrete
• In-situ concrete
• Timber
• Hybrid or composite frames
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Fire protection
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On choosing a n approach to frame construction, what issues you need to bear in-mind?
• The availability of materials and labour • Cost • Speed of construction
• Ability to Standardise
• Size and nature of site
• Performance requirements, such as Fire resistance, environmental impact. • How is the frame organised- what goes where • Type of floor system will be used in the frame.
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Approaches for the installation of Cladding / Curtain walling
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Unitised curtain walling
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Most designers have developed their own in-house specification in a generic format but tailored to meet the requirements of a specific rainscreen cladding project.
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What are the range of services that could be available in a building?
Heating, Ventilations, Air-conditioning, and lighting
Water supply and drainage
Electricity and gas
Fire detection and alarm, communication, movement of people, specialist gas
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Questions to consider for service accommodation
1) How much depth is required for the services?
2) Will the services impose a load on the ceiling?
3) Do vertical services in ducts, walls and partitions need to be integrated with the services placed in the ceiling void?
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More questions to consider for service accommodation
4. How much access is required to the ceiling void?
5. Does the ceiling need to provide sound insulation?
6. What sort of finish and overall effect is required?
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Types of offsite construction
1. Volumetric 2. Panellised construction systems 3. Hybrid construction 4. Sub-assemblies and components
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What could be the practical considerations for volumetric construction?
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Transport
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Transport
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Cranes
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Construction projects
Natural resources Waste and pollution
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Solar energy roofing with photovoltaic slates
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Energy efficiency
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Technology-related (performance and efficiency) Investment-related (Funding, ROI, Cost/Benefit analysis) Government initiatives (e.g. Feed-in-Tariffs)
Challenges when considering low carbon construction and the energy refurbishment of buildings
Improved data collection, reporting and use
Development of new and better skills
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Good Luck