Trench Box

A trench box is a safety device used to protect workers in trenches. It is a square structure made up of pre-constructed side sheets and adjustable cross members. It is usually made of steel. Trench boxes are critical to the safety of workers working below ground as a trench collapse can be fatal.Trench boxes may also be referred to as sewer boxes, manhole boxes, trench shields, trench sheets, or tap boxes.

Workers in trench construction should take every precaution to prevent collapse and ensure safety. OSHA rules require trench boxes to protect workers involved in trenching and excavation. Anyone doing this work must follow specific standards of safety outlined in OSHA Safety and Health Regulations for Construction, Subpart P, titled “Excavations.” Trench boxes and other safety measures may also be required in insertion or reception pits of trenchless construction.

Trench boxes are usually constructed onsite using an excavator or other heavy-duty equipment. First, a steel sidesheet is laid on the ground. Spreaders (usually four) are attached to the sidesheet. With the four spreaders extending vertically, another sidesheet is attached on top. Then the structure is turned upright. Now rigging is attached to the box and it is lifted and placed into the trench. A guidewire may be used by a worker to align the trench box to the hole.

The primary reason for a trench box is the safety of workers while they are in the trench. Trench shoring is a related term that refers to the process of bracing the walls of an entire trench to prevent collapse. Companies doing this work are responsible for the safety of employees and are liable for any negligent mishaps.

Lianggong, as one of the leading formwork & scaffolding manufacturers in China, is the only factory who is capable of producing trench boxes system. Trench boxes system has loads of advantages, one of which is that it can be leaning as a whole because of mushroom spring in the spindle which greatly benefits the constructor. Besides, Lianggong offers an easy-to-operate trench lining system which immensely improves the working efficiency. What’s more, the dimensions of our trench boxes system can be customized according to the customers’ requirements such as the working width, length and the maximum depth of the trench. Furthermore, our engineers will give their suggestions after considering all the factors so as to provide the optimal choice for our customer.

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