T-Wall is an innovative precast concrete modular gravity retaining wall solution.
The retaining wall is constructed by combining structurally reinforced concrete units with engineered backfill. Monolithic concrete units are cast with perpendicular stems attached to a generally rectangular or square facing that together forms the shape of a “T”.
Space restrictions for excavation
Construction complexity and cost
Durability and design requirements
Applications
With more than 850,000 m2 now installed, T-Wall is used wherever conventional retaining walls, non-gravity cantilevered walls, anchored walls, mechanically stabilized earth (MSE) walls, and prefabricated modular walls are considered. Suited to build in areas having restrictive excavation limits, engineers specify this solution for building grade separations for roadways and railways, and for earth retention along coastlines and waterways. Urban and residential developers also appreciate T-Wall for landscaping and commercial work sites.
Major benefits
- Excavation and backfill quantities are minimized
- Allows for a wide range of acceptable backfill including recycled materials
- Shallow or deep structural foundations are not required
- Limited requirements for bracing or external support during installation
- Little if any mechanical connections required
- Approved by most major railway and highway agencies
- Custom architectural finishes
Design fundamentals
Geoquest engineers are experts in mastering soil-structure interaction design. The fundamental design approach assures that the stem allows for pullout resistance against the lateral earth pressure exerted on the rear of the facing, therefore internally stabilizing the structure. The basic design of a T-Wall addresses both the internal and external stability of the wall system and includes, but not limited to:
- Internal pull-out
- Internal overturning
- Internal structural design of the concrete units
- External overturning
- External sliding
- External bearing pressure
Our engineers address project-specific site conditions in each T-Wall design. For example, seismic loading, drainage, water height, and fixtures such as traffic barriers, parapets, and noise walls that are supported by or influence the structure’s performance.
Our solutions allows:
Durability
Due to its characteristics coupled with world-class engineering expertise, T-Wall has proven to be a very durable solution.
Reduced maintenance
T-Wall requires very limited maintenance, allowing for significant reduction of relaetd costs on the long run.
Aesthetics
T-Wall offers a wide range of architectural finish options.
Our solutions suit severall applications to: RetainCrossProtectStrengthen
