lecture 1 - building team

7/27/2019 Lecture 1 - Building Team

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BUILDING CONSTRUCTION

LECTURE: 1 BUILDING TEAM

Mr. Manjally Ndow


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COURSE RULES2

Attendance 5%. Any student who missed 5

classes should withdraw from the course.

Lateness will not be accepted. Anyone whois 15 minutes late will not join that session.

Mobile phone(s) switched off or on silent

mode during lectures.

Ask questions on the subject matter.

No late submission of assignment or make

up test would be encouraged.


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OBJECTIVES

To understand the roles of different

members in a building team.

To understand the relationshipbetween the client and the

construction team.

Describe the building components.

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BUILDING CONSTRUCTION

A study of the theoretical and practical

aspect of a building suitable for human

activities. It also deals withBuilding methods

Building protectionDurability

Handling or utilization

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METHODS OF CONSTRUCTIONS5

The methods of constructing

buildings could depend on several

factors and these includeThe prevailing weather conditions

The type of materials availableThe topography of the ground

The purpose of the building


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Solid or traditional

Structural steel frame

Reinforced concrete

Modular system

Liftslab

TYPES OF CONSTRUCTIONS


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Solid

Solid load bearing walls

Commonly made of brick, concrete

blocks or stoneCast iron columns

Cast iron or timber beams

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Structural steel frame

Skeletal framework often complex

Loads carried by beams

Structure is covered by cladding

Large use of glass and fibres.

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Reinforced concrete

Alternative to steel frame

Columns support beams on which

are laid slab flooring sectionsColumns, beams and slabs cast to

form a monolithic structure

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Modular system

Prefabricated components used.

Specially designed connectors

Encased in concrete to provide adegree of fire and corrosion

protection.

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Liftslab

Building framework formed by

columns

Hydraulic rams used to lift roof andfloors into position

Height can be increased by splicing

on additional sections of column.

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BUILDING TEAM

Building is essentially a team effort,

each member has a vital role to play.

The composition of any building teamdepends on:

The size of the building .

The size of the contract.

The building type (low or high rise)

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BUILDING TEAM COMPOSITION 1

CLIENT

Commissions the work and directly or

indirectly employs all those who are

involved in the building operations. Types

of clients are:

PRIVATE SECTOR CLIENT

Private Individuals.

Partnerships.

Limited liability companies.

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Types of clients (Contd)

PUBLIC SECTOR CLIENT

Local authorities

Government Departments

Statutory authorities

Public undertakings

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ARCHITECT

Is engaged by the building owner as his/her

agent to design; advice and ensure that the

project is kept within cost and complies with

the design.

QUANTITY SURVEYOR

Prepares bill of quantities (BOQ), check

tender documents, prepares interim

valuations and advise the architect on the

cost of variations.



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ENGINEERS

Are specialists such as the Structural

engineer who is employed to work withthe architect on the design especially on

stability of the structure.

The Service engineer include acoustics, fireprecautions, heating, lighting, plumbing,

sanitation, telecommunication



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SITE AGENT

A representative of the engineer on site,

especially in large contracts.CONTRACTOR

Employed by the building owner on the

basis of the architects advice to carryout the construction work.

He takes instructions from the architect.



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CLERKS OF WORKS (COW)

Employed by the client based on the

recommendations of the architect on large

contracts to act as on site representative.

He has liaison powers and cannot issue

instructions on his own behalf; he can only offer

advice where necessary.ACCOUNTANT

Prepares and submits accounts to clients, makes

payment to suppliers and sub-contractors.



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SURVEYOR

Employed by the contractor to check

and assist the quantity surveyor inthe preparation of interim valuations

and final accounts.

He may also measure work done for

bonus and sub-contractor payments.



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ESTIMATOR

Is responsible for the preparation of unit

rates for pricing of tenders and carriesout pre-tender investigations into the

cost aspects of the proposed contract.

BUYER Orders materials, obtains quotations for

the supply of materials and services.



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ADMINISTRATOR

Organizes the general clerical duties of

the contractors office for the paymentof wages, insurances and all necessary

correspondences.

CONTRACTS MANAGER Liaises between the site and office and

has the overall responsibility for the site

operations.



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GENERAL FOREMAN

Is the contractors on site representative for

the day-to-day running of the site.

TRADES FOREMAN

Answerable to the general foreman and is in

charge of a trade gang.

OPERATIVES

Main workforce on site, including tradesmen,

apprentices and laborers.



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BUILDING CONTROL OFFICER

Is a representative of a local authority,

to whom the contract drawings aresubmitted at the design stage to ensure

that they conform to the requirements

of the Building Regulations and PlanningControl.

He also visits the site on regular stages to

carry out statutory inspections.



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CLIENT

MAIN

CONTRACTOR

ARCHITECT

SOURCES OF

CAPITALSOLICITOR

SERVICE

ENGINEER(S)

STRUCTURAL

ENGINEER

BUILDING

CONTROL

OFFICER

FIRE, PLANNING

& OTHER

OFFICERS

COW NOMINATEDSUPPLIER

NOMINATED

SUBCON-TRACTORS

PRIVATE

QUANTITY

SURVEYOR

FACTORY

INSPECTORS

SUPPLIERSSUB

CONTRACTORSPLANT HIRERS

LABOUR -ONLY

SUB

CONTRACTORS

FIG.1 THE MAIN PARTIES INVOLVED IN THE PROCESS OF BUILDING

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CLIENT

ARCHITECT CONTRACTOR

DEVELOPMENTCONTROL UNIT

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Building is a structure that serves the

purpose of residential, school,

hospital, industrial, parking andstorage, agriculture

It can either be for

dwelling or

commercial

BUILDING


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BUILDING COMPONENTS31

The main components are:

Floor

WallDoor

Window

Roof

Foundation


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FLOOR32

Can be made of the following:

Concrete mixtures or bricks (that are

interlocked together)Glass and/or fibres

Timbers

First layer is spread horizontally overthe ground surface.


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WALL

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Runs vertically and horizontally

Usually made of cement or mud

blocks, bricks, glass, etc.They provides the following:

Protection and privacyTransmission of loads above the

ground


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DOOR34

Types

Ledged and braced

Flush

Panel

HingedRevolving

Sliding


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WINDOWS35

Types

Sash

Casement

Louvres

Sliding


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ROOF36

Types of construction

Gable

Lean to


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ROOF COMPONENTS

Barge

board

Verge

Common rafter

Valley rafter Ridge board

Jack or cripple rafter

Hip rafter

Hip jack rafter

Hip end

Fascia

Soffit

Gable end


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REFERENCE38

Building Construction Illustrated by

Francis D. K. Ching and Cassandra

Adams, Third EditionEnvironment Engineering by Joseph

Salvato, Third Edition


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THANK YOU

ANYQUESTION OR COMMENT

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lecture 1 - building team

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