Horizontal shoring is a construction technique used to support the sides of an excavation or trench. It involves placing horizontal beams or planks across the trench to prevent soil collapse, ensuring the safety of workers and equipment. This method is particularly useful in deep excavations where the risk of cave-ins is high. The horizontal shoring system can be made from various materials, including wood, steel, or aluminum. Proper installation and maintenance of shoring systems are crucial to comply with safety regulations and protect against potential hazards during construction activities.