There can be several reasons why long-span clay brick walls or fences may fail. Here are some common factors that can contribute to their failure:
Insufficient foundation: A proper foundation is essential for any structural wall, including brick walls. If the foundation is inadequate or poorly constructed, it can lead to settlement or movement of the wall, causing cracks or even collapse.
Lack of structural reinforcement: Clay bricks alone may not have sufficient tensile strength to handle long spans without support. If the wall is not reinforced properly with steel bars or other structural elements, it can become weak and prone to failure.
Inadequate wall thickness: Long-span walls require a larger cross-sectional area to resist lateral forces and maintain stability. If the brick wall is too thin or lacks sufficient thickness, it can become unstable and fail under wind loads or other external pressures.
Poor construction techniques: Improper construction practices, such as inadequate mortar joints, insufficient bonding between bricks, or improper alignment, can compromise the structural integrity of the wall. These issues can weaken the wall and make it susceptible to failure.
To address these challenges and provide alternative solutions, here are some options to consider:
Reinforced concrete walls: Constructing walls using reinforced concrete provides a stronger and more durable solution. Reinforcement with steel bars or mesh helps to distribute forces and enhance the wall's stability and load-bearing capacity.
Retaining walls: If the long-span wall is intended to serve as a retaining wall, alternative solutions like gabion walls, concrete block walls, or reinforced soil structures can be considered. These options offer better stability and resistance to lateral pressures.
Steel or composite fencing systems: Instead of relying solely on clay bricks, using steel or composite fencing systems can provide greater strength and flexibility. These systems are designed to withstand high wind loads and can be customized to meet specific design requirements.
Consultation with a structural engineer: When dealing with long-span walls or fences, it is advisable to consult with a qualified structural engineer who can assess the site conditions, design appropriate solutions, and ensure proper construction practices are followed.
Remember, proper design, construction techniques, and materials are crucial for the long-term performance and stability of any structural wall.