Building Construction

Topics: Paint, Oil paint, Door Pages: 44 (7393 words) Published: October 3, 2013
UNESCO-NIGERIA TECHNICAL &
VOCATIONAL EDUCATION
REVITALISATION PROJECT-PHASE II

NATIONAL DIPLOMA IN
BUILDING TECHNOLOGY

YEAR II- SE MESTER I
THEORY/PRACTICAL
Version 1: December 2008

BUILDING CONSTRUCTION III
COURSE CODE: BLD 203

TABLE OF CONTENTS
WEEK 1:

SCAFFOLDING
1.1 Principles of Scaffolding

Parts of Scaffolding
WEEK2:

SCAFFOLDING (CONTINUED)
1.2/1.3 Types of Scaffold
Putlog Scaffold
Mobile Scaffold
Cantilever Scaffold
Suspended Scaffold
1.4 Use of Formwork in Floor Construction

WEEK3:

FENESTRATION IN BUILDING
2.1
Functional Requirements of Openings in Walls
2.2
Treatment to Openings
2.3
lintels
2.3
Arches

WEEK 4:

ARCHES

WEEK5:

DOOR
2.4
Types of door

WEEK6:

DOORS CONTINUED
2.5
construction of doors\

WEEK7:

DOOR FRAMES AND LINING
2.7
Doors frames
2.8
Door lining
2.9
methods of fixing door frame and door lining

WEEK8:

METAL DOOR
2.10 Types of metal door
2.12 Ironmongery

WEEK9:

WINDOW
2.13 Types of window

WEEK10:

PARTS OF DOORS AND WINDOWS
2.1
Parts of doors and windows

WEEK 11:

FINISHES
3.1
Functions of finishes
3.2
Floors finishes

WEEK 12:

FLOOR FINISHES CONTINUED

WEEK13:

WALL AND CEILING FINISHES
3.3

Wall finishes

WEEK 14:

PAINTING

WEEK 15:

PAINTING CONTINUED

WEEK 1: SCAFFOLDING
(1.1) Principles of Scaffolding
Scaffolds are temporary working structures made from poles of wood or metal erected around the perimeter of a building or a structure to provide a safe working place at a height that cannot be reached from the ground. They are usually required when the working height or level is 1.500 m or more above the ground level. All scaffolds must comply with the minimum requirements and objectives of the constructions (Health Safety and Welfare) Regulations 1996. The first use of scaffolding is for the external walls. When the brickwork is about shoulder high, then the bricklayer needs to be raised up to continue working. Below 2 metres the scaffold boards can rest on timber trestles. This is a suitable work surface because the bricklayer can step up and down to get bricks and mortar.

More than 2 metres from the ground, workers need ladders up to the platform, which must be wide enough to hold materials, plant and people. Platforms should be placed at 2 metre intervals as the height of the building increases, so that workers can comfortably reach their working area without hitting their heads as they walk underneath.

Parts of a Scaffold
The basic parts of a scaffold consist of the following and are shown in figure 1.1. Base boards are timber boards that support the base plate on soft or uneven ground. Base plates are square metal plates that fit into the bottom of scaffold tubes to spread the load. Braces are poles fixed diagonally to stiffen the scaffold by forming a triangle. Standards are the vertical poles that carry the weight of the scaffold to the ground. Toe boards are the boards along the edges of platforms which prevent materials from falling. Transoms are cross pieces that rest on the ledgers and support the platform. Ledgers are longitudinal horizontal components that are fixed to the standards. Putlogs are transverse horizontal members fixed to the ledger.

Fig 1.1 Components of a scaffold

Fig 1.2 Joints and connectors of scaffold parts

Test Questions
1. Define scaffolding
2. List 5 important parts of scaffold and describe them.

WEEK 2: SCAFFOLD CONTINUED
1.2/1.3

Types of Scaffold



Putlog scaffold



Independent scaffold



Mobile scaffold



Cantilever Scaffold



Suspended scaffold

Putlog Scaffolds
These are scaffolds which have an outer row of standards joined together by ledger which in turn support the transverse putlogs which are built into the bed joints or perpends as the work proceeds. They are therefore only suitable for new work in bricks or blocks. A typical putlog scaffold is as shown in fig...
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