steel buildings
TRANSCRIPT
Steel Building Construction
Department of Inland RevenueSri Lanka – Car Park
Chittampalam A. Gardiner Mawatha, Colombo 02.
Outline
• Introduction• Advantages of steel building construction• Disadvantages of steel building construction• Main uses of steel building• Site investigation, fabrication and key building
elements of steel building• Cost details of the construction• Suitability of steel building construction to Sri
Lanka
Introduction
• Steel plays a central role in many of the most sophisticated and accomplished examples of modern building design.
• Steel can either be used for the inner support structure or outer covering.
• Structural steel frameworks are assembled onsite (The processes involve lifting and placing components into position, then connecting them together)
Advantages of Steel Construction
• Consistent Material Quality
• Light weight and strong
• Non-Combustible Material
• Dimensionally Stable in any Climate
• Insect Resistance and steel will not Rot
• Can build very tall and wide (tallest buildings in the world)
• Prefabricated – frames assemble quickly
Disadvantages of steel construction
• Steel is an expensive material (much more expensive than masonry or concrete)
• Frames are unstable
• Needs fire protection
• Needs separate “skin”
Main Uses of Steel Buildings
• Steel Building used as storage buildings
• Steel Buildings as Skyscrapers
• Steel Buildings used as Office Buildings and Commercial Buildings.
• Steel Buildings used as Temporary Buildings
Storage
Buildings
Sky Scrapers
Office Buildings
Temporary
Buildings
Main Uses of Steel Building
Steel Building used as storage buildings
• Minimum repair and maintenance
• Durable
• Speed of construction
• Building are movable through deconstruction or mobility.
Steel Buildings as Skyscrapers
• Strong internal framework.
• Speed of construction
• Ease of installation
• Design Flexibility
Steel Buildings used as Office Buildings and Commercial Buildings
• Strength & Stability
• Speed of Construction
• Comparatively less human resources in installation.
• Design Flexibility
Steel Buildings used as Temporary Buildings
• Ease of Deconstruction
• Re-usability of steel
• Speed of construction
• Stability
• Durability
Site investigation
The main purposes of site investigation
• To determine the nature of the sub soil
• To determine the bearing capacity of the building.
• To determine the possibility of the ground movement.
Fabrication
Fabrication describes the processing of
steel from manufacturer to final delivery
to a construction project, which includes;–Coating–Stockyard storage–Cutting–Bending–Welding
Technology use in the construction
Technology used for columns
1. Top beam
2. Side plate
3. Packing plate
4. Bottom beam
5. Bottom plate
6. Angle
• Used Arched weldingPrepare the edge to get
strength
• Stiffener plate weldedGet more strengthPrevent curving beams
• Using studs for beam
• Used sink pose pate for steel
• Removed corrosion Using sandUsing machine (grinder)
Construction Process of Steel Building
Planning for Construction
• Cost
• Program
• Quality
Steel Erection
• Establishing suitable and safety foundation• Lifting and placing components into position• Aligning the structure
Site Bolting
Concrete SlabMetal deck may need to be assessed for its ability
to stabilise the steel members
Site welding
Cost Details for the Construction of Different Steel Building Elements
• Total cost for the whole construction project is Rs.48580000/=
• Beams and Columns are separated and identified by their sizes
Element Quantity Unit Price
Universal beams size 350*175*42 kg/m
size 400*200*57 kg/m
10.7569.1
52854247
Universal column size 250*250*57.4, 300*300*101.1 kg/m
175.6 7127
Lip C galvanized purling type ‘c 10020’ , size 102*51*15, 2mm thick
411 1229
Hot dip galvanize coated angle
irons40*40*5 mm,
128.2 830
Steel truss Type TR 1
Type TR 2
31
13265281883
Suitability of steel building construction to Sri Lanka
Suitability of steel building
construction to Sri Lanka
SustainabilityConstruction
Utilization
• Lack of natural resources like sand, bricks• Inadequate local production of cement• Reusability of steel
Sustainability
• Speed of construction• Cost of construction
Construction
• Car park of Department of Inland Revenue• Warehouses• Petrol Sheds• Network towers
Utilization
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