Davit Systems
In most cases, a davit system is used to rig a Powered Platform; however, it can also be used with other forms of suspension equipment such as a single cage or a bosun's chair.
A davit system consists of two primary components, a base, and an arm. The base is a permanent fixture to the building structure and the arm is typically portable with the ability to be raised, lowered, and removed. Both the base and arm can be customized to meet a building's fall protection needs.
Davit Base
The base of a davit system is customized to meet the specific structure that the building is constructed of whether it's concrete or steel, we have a davit base to suit your project's needs.
For a concrete roof, the davit base can be cast in place by the forming contractor and is visually inspected and load tested by Pro-Bel certified technicians. A steel roof requires any davit base to be welded onto a minimum 10" x 10" surface and typically requires additional reinforcing (i.e. back span beams) designed by the structural engineer of record.
Wood structures are typically not suited for davit bases due to the high moment created by the davit arm assembly that is applied back to the structure. Although not impossible, it's recommended to avoid davit based on wood structures altogether. Thus, a tie-back roof anchor system is the preferred solution for implementation. If your building project consists of a wood structure, it's best to contact Pro-Bel early in the design process to help coordinate a system that suits your building's needs.
Here are some of the davit bases Pro-Bel supplies.
Davit Arm
Davit arms are built from a combination of structural aluminum and steel. They're a crane-like form that consists of a vertical mast and a horizontal boom that are portable so they can be moved between davit bases. They typically come in pairs. Pro-Bel davit arms are window washing equipment that is used to suspend people working on the building's façade on an accompanying platform for window washing and light-duty building maintenance.
Davit arms are built from a combination of structural aluminum and steel. They're a crane-like form that consists of a vertical mast and a horizontal boom that are portable so they can be moved between davit bases. They typically come in pairs. Pro-Bel davit arms are window washing equipment that is used to suspend people working on the building's façade on an accompanying platform for window washing and light-duty building maintenance.
Here are some of the Davit arms Pro-Bel supplies:
Types of Davits
There are different types of davits and rigging methods to suit different building needs.
Portable Davits:
Dedicated to a specific building and capable of being moved manually around different work locations around the dedicated area.
Fixed Davits:
Designed to remain at a fixed location. Normally used for difficult-to-access areas where extra-long reach is required.
Rolling Davits:
Designed to traverse on roof or wall-mounted track using manually operated or electrically powered rolling carriage. Can be ground-rigged or roof-rigged.
Ground Rigged Davits:
A low davit designed to just clear the parapet. Preferred method of rigging with window cleaners. If using a platform, it can only be rigged on the ground i.e. cannot be rigged on the roof and then swung over the parapet.
Roof Rigged Davits:
A davit used to raise the suspended working platform above the building face being serviced. The platform can also be rigged on the roof and then swung over the parapet or rigged on the ground if desired. Normally the davit arms are 7'-0" (2134 mm) higher than the parapet wall to allow for roof rigging and equipped with transport wheels and winches for ease of use.