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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