🕑 Reading time: 1 minuteThe main purpose of walls in building construction is not only to protect buildings from damage but also to divide them for different rooms or spaces. There are various functional requirements of walls that should satisfy to perform its functions adequately.
- Functional Requirements of Walls in Building Construction
Functional Requirements of Walls in Building ConstructionFollowing are the functional requirements of walls in a building construction:
- Weather and ground moisture resistance
- Fire safety
- Resistance to heat passage
- Sound resistance
1. Strength Requirements of WallsStrength requirements of walls in building construction is governed by strength of material that is employed to build the wall and how materials are fitted together. The strength of materials is determined by its compressive and tensile strength which can be achieved from tests. Material ultimate strengths at failure are obtained from testing samples and strength reduction factor is applied for the ultimate strength to compute allowable material strength. This factor is used to consider both material strength variations and their response under stresses. Stone, brick, steel and concrete are examples of materials that could be used to construct walls. Generally, the entire compressive strength of bricks and stones are not employed in small building such as houses by functional stability of the building.
2. Stability Requirements of WallsStability of walls greatly depends on stability of its foundation, load eccentricity, temperature effects, lateral loads such as earthquake and wind loads, and changing in moisture. Overturning tendency of the wall is due to loads that are not acting on the center of the wall like loads from roofs and floors and lateral loads. If both lateral loads and eccentric loads increases wall deformation is increasing and thus the wall will be unstable. Building codes provide recommendation for wall height and width to prevent instability resulted from loads. Moreover, horizontal restrictions such as tie between walls and roofs and intersection between walls and piers prevent deformation due to lateral loads. Furthermore, walls with irregular configurations as shown in Figure-1 are more stable than regular straight walls because buttress actions come into effect in the former.
Figure-1: Different irregular profile walls