(1) Industrialized building systems (IBS) involve constructing buildings using prefabricated components manufactured in a controlled environment. (2) The history of IBS dates back to the 17th century with panelized timber houses shipped from England to North America. Major developments include the Crystal Palace in 1851 and modern era characterized by high levels of prefabrication and automation. (3) IBS can be classified into framed systems, panel systems, and box systems depending on how components are assembled and loads are transferred. Common types include precast concrete, steel formwork, and prefabricated timber framing systems.

1. (BMCIII– Lecture 1)
BY: ABEL SOLOMON
Faculty of Architecture and planning,
Arba Minch university
Building Materials and Construction III
INDUSTRIALIZED BUILDING
SYSTEMS (IBS)

2. CONTENTS
1. Introduction
2. History
3. Characteristics
4. Classifications of IBS
5. Types of IBS
6. Advantages and Challenges of IBS

3. 3
1.
Introduction
 IBS can be defined
 As a construction system using
fabricated components
 As a construction technique in
components are manufactured in
controlled environment (on or off
site), transported, positioned and
installed into a structure with
additional site work.

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1.
Introduction
 As a total integration of all subsystem and
components into overall process fully
utilizing industrialized production,
transportation and assembly methods.
 As a set of interconnected element that are
joined together to enable the designated
performance of a building.
 As a system in which all building
components are mass produced either in
factory or at site under strict quality control

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2. History
 Originated as early as the 17th
century
 Panelized timber houses were
shipped from England to north
America in 1624.
 1700s, The Industrial Revolution
Revolution provided the
construction industry with
technological boost.
 In 1851, modular-dimensioned
Crystal Palace in Hyde Park,
London.
 In the 1880s prefabrication started
to flourish
 In 1889, the Eiffel Tower in Paris
 Modern era characterized by high
level of prefabrication and
automation

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2. History
 Joseph Paxton --- Crystal Palace
 Frank Lloyd Wright ---American System Built Homes
 Le Corbusier --- mass production ideas in the Modern Frugés Quarter
Quarter project
--- Citrohan house
 Walter Gropius ---Törten estate (sub-assemblies)
 Konrad Wachsmann --- factory-produced panel and space frame
frame systems
 In 1962 John Habraken --- innovated the open system

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2. History
Crystal Palace
American System Built Homes
Frugés Quarter project
Citrohan hou
Törten

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2. Characteristics
of IBS
1. Open System
 Allows greater flexibility and architectural
2. Integration
 High-level of coordination exists between
3. Modular Coordination
 Allows easy adoption of prefabricated building

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2. Characteristics
of IBS
4. Standardization and Tolerances
 All components must be standardized for modular
coordination to take place
5. Mass Production
 Economy is justified by high amount of production
6. Specialization
 Requires only specialist personnel and systems

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3. Classification
of IBS
1. Framed systems
 Can be defined as those systems that
the loads by their beams and girders
columns and to the ground
 Their important feature is their
transfer heavy loads over large spans
 Used in construction of bridges,
lots, warehouses, industrial buildings
sport facilities.

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3. Classification
of IBS
2. Panel system
 Can be defined as those systems
carry the loads through large floor
and wall panels.
 Concrete panel systems are
used for high rise building for ease
construction purpose.
 Used in hollow core slabs, interior
exterior walls

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3. Classification
of IBS
3. Box system
 Can be defined as those systems that
modules (boxes) for fabrication of
habitat units.
 The main features of this systems are
internal stability as it can withstand
loads from various directions
 Require large prefabricated sections
transported or handled at one time

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4. Types of IBS
1. Precast concrete Framing,
Panel and Box
 The most common group of IBS
is the pre-cast concrete elements
 Lightweight pre-cast concrete, as
well as permanent concrete
formworks.
 Pre-cast concrete columns, beams,
walls, “3-D” components (e.g.

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4. Types of IBS
2. Steel Formwork Systems
 Considered as one of the “low-
or the “least prefabricated” IBS
 Generally involve site casting and
therefore subject to structural
control
 Include – tunnel forms, tilt-up
beams and columns molding
and permanent steel formworks

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4. Types of IBS
3. Steel Framing Systems
 Commonly used with pre-cast concrete
 Used in fast-truck construction of
skyscrapers
4. Prefabricated Timber Framing
Systems
 Among the products listed in this
are timber building frames and timber

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4. Types of IBS
5. Blockwork Systems
 The construction method of using
conventional bricks has been
revolutionized by the development
usage of interlocking concrete
units (CMU) and lightweight
blocks.
 The tedious and time-consuming
traditional brick-laying tasks are

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5. Advantages and
Challenges of IBS
ADVANTAGES OF IBS
 Reduction of unskilled
workers
 Reduce wastage
 Increase in quality
 Safer working environment in
construction site

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5. Advantages and
Challenges of IBS
CHALLENGES OF IBS
 High initial investment capital
 Cost a lot of money in terms of
standardization
 Market monopoly
 Infrastructure dependent
 Tedious transportation of building

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Next: IBS
COMPONENTS