Building Construction 6. intro to building materials


Published on

  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Building Construction 6. intro to building materials

  1. 1. Building Construction Technology IPractical Session no. 621.05.2012Answer these Questions: - Building material is : Any material which is used in construction of residential or commercial buildings. - The choice of building material depends on : o the size and nature of building, o its design, o intended purposes, o availability of resources o location. - Building materials can be classified into : natural, synthetic. - Write three facts for these materials : o Rocks:  Easily, one of the most solid and durable material used in constructions,  Rock is a very dense material so it gives a lot of protection too. o Wood :  Wood is an aesthetically pleasing material that never goes out of trend completely,  Wood obtained from certain plants is quite durable, however low quality wood is open to many extremities. o Plastic:  Plastics vary immensely in heat tolerance, hardness, and resiliency. Combined with this adaptability,  Plastic is a light, flexible substance, used mostly for piping in buildings. o Concrete: o Glass :
  2. 2.  Glassmaking is considered an art form as well as an industrial process or material.  Clear windows have been used since the invention of glass to cover small openings in a building.  The use of glass in architectural buildings has become very popular in the modern culture. o Steel:  It is strong, flexible, and if refined well and/or treated lasts a long time. o Mud and Clay:  Mud and clay are the most commonly used materials in residential buildings.  Buildings made primarily of mud and clay can easily endure many years.  Using mud and clay in buildings is a very good option for warm places- Define : o Density : Ratio of the mass of a substance to its volume, expressed, for example, in units of grams per cubic centimeter or pounds per cubic foot. o Porosity : fraction is a measure of the void spaces in a material o Shrinking and swelling: Swelling soils are soils or soft bedrock that increase in volume as they get wet and shrink as they dry out o Melting point : point is the temperature at which a material goes from the solid to the liquid state at one atmosphere. o Viscosity : is a measure of the resistance of a fluid which is being deformed by either shear or tensile stress o Mechanical Properties: describe how it will react to physical forces. o Hook’s law : For an elastic material, the strain is directly proportional to the stress. o Stress: force causing the deformation o Ductility: is a measure of how much deformation or strain a material can withstand before breaking o Toughness: describes a materials resistance to fracture o Elastic limit: is the highest stress at which all deformation strains are fully recoverable o Strength: