About selection criteria of materials such as glass, paint, timber, masonry, concrete and roofing materials

1. Selection criteria of
Building Materials
BE 1102 – Building Materials
Project Work - 3
NAME STUDENT ID
Zuhry M.S.A 192704L
Riskan M.R.M 192670C
Shafny M.S.M 192712J

2. Glass
Timber
Concrete Roofing materials
Masonry
Paints
Materials

3. Concrete
 Plain Concrete:
 Maintaining density in a specific range. (2200-
2500)kgm-3
 The raw material should be proportionate. (cement:
sand: aggregate=1: 2: 4)
 High Performance Concrete:
 Density higher cement should be used.
 It is made with good quality aggregates.
 Water is used sparingly.
 Reinforced Concrete:
 • Be sure to bear every tension.
 • To withstand thermal expansion.
 • Preventing moisture and ventilation
 High Density Concrete:
 • Choosing materials that have a high density
of concrete. (3000-4000)kgm-3
 • Heavy weight aggregates should be used.
 Stamped Concrete:
 • This type of concrete is very commonly used
 • Often seen in pavements, parking and high
traffic areas.
 • Stamped concrete is used where initial
strength is needed and heat is needed for
cooling such as cold weather.
Specific factors to consider when selecting
concrete:
 Compressive strength of concrete.
 Workability of concrete.
 Durability of concrete.
 Initial cost.
 Weather condition.

4. Masonry
 Stone Masonry:
 • Stones depending upon their geological formations
and have life from 300 to 1000 years.
 • Wind, rain and snow do not affect stone. This is why
stone masonry is widely used.
 Brick Masonry:
 • Brick masonry is made of burnt clay bricks.
 • If brick is used the masonry, the wall should be well
thickened. Because the tensile strength in brick
masonry is very low.
 Veneer Masonry:
 • Veneer masonry is a favored choice for home
building and remodeling.
 • It can be used in addition to traditional wood frame
structures.
 • This type of masonry increasing the thermal
performance of the wall.
 Composite Masonry:
 • When masonry is constructed with two or
more types of building materials is known as
composite masonry.
 • Composite masonry may be adopted by
factors such as improvement in the appearance
of the building and use of available materials to
obtain maximum economy.
Specific factors to consider when
selecting masonry:
 Initial cost
 Weather condition
 Speed of construction
 Durability
 Maintenance

5. Paints
 Emulsion:
 Have good alkali resistant properties
 Dry very quickly can be washed with water
hence can be used for all masonry works.
Especially for stucco plaster brick works which
contains free alkali
 Enamel:
 Dry very slowly
 After drying it forms very hard and smooth
layer.
 This layer prevent the effects of acids, alkalis,
gas fames, water etc.
 Aluminum paint:
 The surface of iron and steel are better
protected from corrosion from aluminum paints
 It is water proof and resist against electricity.
 Resist heat to a certain degree
 Cement Paint:
 Contains cement as a base material and available
in powder form.
 Water proof and can be applied in internal or
external surfaces.
 Synthetic Rubber paint:
 Widely used on cement concrete surfaces like
concrete walls.
 Least affected by sunlight and have good
resistance properties against acid alkalis and
moisture conditions.
 Dries very quickly and maintain uniform colour
of surface.
 Oil paint:
 Oil paint are very economic and they can be
applied in easy manner.
 Suitable for doors, windows and metal structures.
 Water proof and resist against electricity

6. Roofing materials
 Clay tiles
 Long lasting and non combustible materials
 Heavy, and must be installed by a professional
 Add texture and elegance to roof
 Metal roofing
 Available in panels and shingles
 Lightweight, long-lasting and recyclable
 Relatively expensive
 Wood shingles
 Good aesthetic appearance
 Relatively expensive
 No Fire-resistance
 Not suitable for areas with wet climate
Specific factors to consider when
selecting Roofing Materials:
 Heavy of material and requirements
of framing
 Weather condition of the place
 Aesthetic appearance of the
material
 Installation facility of material
 Required maintenance issues.
 Cost of the materials
 Availability
 Life span of the material

7. Glass
 Types of Glass used in
Construction
 • Float Glass
 • Tinted Glass
 • Toughened Glass
 • Laminated Glass
 • Shatterproof Glass
 • Extra Clean Glass
 • Double Glazed Unit
 • Chromatic Glass
Specific factors to be considered when selecting Glass
 •Transparency
permanently change its transparency by adding compounds to the
initial volume.
 •Strength
Certain laminates and admixtures can increase its modulus of
rupture
 •Green House Effect
Longer infrared re-radiation from the heated objects are unable to
pass through the glass
 •Recyclable
Broken or waste glass are used as raw materials in glass
manufacture as aggregate in construction

8. Specific factors to be considered when selecting
Timber
 Hardness of the timber
 Thickness of timber planks
 Availability of materials
 Cost of the material
 Strength and life span
 Should be usable for a long time
Types of Timber used in Construction
 • Floating floor boards
 • Hard wood
 • Parquetry
 • Bamboo
 • Laminate
Timber