As an engineering consulting company, Tenera has designed the most efficient repair and waterproofing applications for a variety of buildings, including all the areas that require attention, to ensure correct maintenance and timely repairs.
While elevator pits are typically constructed with durable concrete, this material remains susceptible to damage from water, chemicals, and environmental elements. Consistent maintenance and effective waterproofing play a pivotal role in prolonging the longevity of expensive elevator equipment and averting the need for extensive and costly repairs.
Preventative maintenance begins with regular elevator pit cleaning which can also reveal issues. An inspection, including infrared imaging, will help our professionals determine the source of issues and define the full scope of the repairs required. A spec document will be produced, and the project can be tendered. Once the project is awarded, and the work commences, our specialists can supervise it to ensure that the specs are followed. Upon completion, the job can be certified, and the corresponding reports produced.
Elevator Pits – Typical Scope of Work
When elevator pit repair and waterproofing are required, the typical scope of work includes crack repair and patching, cold joint (a weaker area of a concrete surface where two slabs meet – floor and wall, or two walls) waterproofing, and a polyurea-based waterproofing membrane installation. If the shaft walls are made of blocks, then a special drainage system must be installed – in addition to the repairs already mentioned – to ensure water no longer accumulates inside the hollow walls.
For those elevator shafts that contain a piston-operated elevator, another specific repair – piston housing waterproofing – might be required. This procedure begins by ensuring that any accumulated water is pumped out, and the top of piston housing is cleaned. A polyurea-based foam injection follows. Primer is then applied to piston housing walls, and a specialised waterproofing filler is used. An industrial-strength adhesive is applied next, around the perimeter of the top of the piston housing to ensure adhesion of a two-inch concrete patch that will be installed next. The new concrete is coated with a primer, which fully seals the area around piston housing.
Visit this page in our project portfolio for one example of an elevator pit repair and waterproofing application.