To ensure an elevator pit is kept in optimal conditions – which will help preserve sensitive elevator equipment – regular maintenance and repairs are required. We offer a full spectrum of services to help keep your property in optimal condition.
We take note of every single issue so that our clients can know everything that needs to be done to repair all the areas.
We prepare very specific tendering packages, outlining the work scope in detail, specifying work types and materials to be used by a contractor.
PROJECT TENDERING & SUPERVISION
If requested, we can do project tendering, and supervise the work done by the contractor chosen by our client, certifying it at the end of the project.
Once the project is complete, we will generate a detailed report to be sent to the Board of Directors and/or City Officials, as applicable, outlining all the work performed.
ISSUE / CAUSE
Elevator pits start leaking when there are cracks in shaft walls, and water penetrates from the environment. Block wall shafts are always saturated because they are hollow, and piston housing (piston-operated elevators) accumulates water, flooding the pit.
Darker shaft walls, rusted elevator equipment, and calcium deposits around cracks are all indicators of issues with leaking. The first two indicate flood levels, while the latter shows that there had been significant flow of water through the cracks even if there are no active leaks during the inspection.
A typical scope of work in elevator pits can include crack repair, patching and slope correction, cold joint waterproofing, and a waterproofing membrane installation. For piston-operated elevators, piston housing is waterproofed. In case the elevator shaft walls are made of blocks, a special drainage system is installed.
After all the issues are collected – including measurements and photos – this information is entered into our TeneraPro app. Work types and materials are specified, resulting in a detailed design document which can be used as part of the tender package to be sent out to contractors.
Application designs and materials specified by Tenera ensure lasting concrete repair and waterproofing results. Industrial-grade products allow for extensive crack repair and patch installation of varying thickness (slope correction can be done).
Crack repair and patching, including slope correction if required, are done first, followed by cold joint waterproofing. Cold joints – corners formed by walls and walls / floors – are the weakest area of any concrete surface and are likely to leak, so they must be waterproofed before the pit floor is coated with a membrane.
The last step of the waterproofing process involves a polyurea-based membrane installation. The pit floor is coated with the membrane, and an upturn is done around the wall perimeter to ensure lasting results.
COLD JOINT REPAIR
To waterproof cold joints (floor / wall corners), chipping is done to clean out the joints, and a continuous patch that runs along the entire joint at a 45-degree angle is installed. The patch is coated with a polyurea-based waterproofing material.