BUILDING CONSTRUCTION MATERIALS AND TECHNIQUES
1. Introduction
Building construction materials and techniques refer to the materials used in construction and the methods applied to assemble them to form safe, durable, and functional structures. The selection of materials and techniques depends on factors such as cost, availability, climate, strength requirements, and intended use of the building.
2. PROPERTIES OF BUILDING MATERIALS
1. Introduction
Properties of building materials refer to the characteristics that determine how a material behaves under different conditions such as load, temperature, moisture, and fire. Understanding these properties helps in selecting suitable materials for construction.
2. Physical Properties
These describe the natural characteristics of a material.
2.1 Density
Mass per unit volume of a material.
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High density → stronger and heavier (e.g., concrete)
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Low density → lighter (e.g., timber)
2.2 Porosity
Ability of a material to absorb water.
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High porosity → absorbs more moisture
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Affects durability
2.3 Moisture Content
Amount of water present in a material.
Important for timber and soil.
2.4 Specific Gravity
Ratio of material density to water density.
2.5 Texture and Appearance
Surface finish and color affect aesthetics.