Structural Soil Vault System – Terra Vault II
Terra Vault II – Structural Soil Vault System
TerraVault II is a high strength structural soil vault system designed primarily to ensure trees have the opportunity to thrive among our concrete jungles. Healthy trees and plants play a vital role by increasing urban biodiversity .
Healthy trees keep our cities cool, absorb C02 improving air quality, provide habitat for animals and insects and overall keep humans healthier.
For trees to grow successfully in built up areas the root systems require room to anchor in and absorb nutrients and water. Unfortunately footpaths, roadways and other hard structures restrict trees from growing successfully thus never truly provide optimal benefits leaving the tree parched in arid type conditions, branches and leaves sparse as the tree roots struggle to penetrate through compacted soil lacking in nutrients and water.
Fortunately the Terra Vault structural soil system provides a perfect solution for councils, planners, developers, architects and landscapers to build a sustainable platform for trees to thrive within an urban environment.
The Terra Vault modules assemble together forming a robust cell matrix that supports relevant pavement loads while providing large volumes of un-compacted soil within the cell matrix for unrestricted root establishment.
The open cellular matrix provides maximum growth zone for healthy tree roots with 95% of the internal void volume available for un-compacted soil and root growth.
Traditionally rock and soil mix was used to provide support for pavement inhibiting root growth within the pavement area. TerraVault II structural soil vault system has moved this principle forwarded by entirely replacing 80% of the total rock volume.
The engineered modules provide structural integrity for pavement loads whilst providing enhanced opportunity for trees to flourish in our urban environment.
Terra Vault II – Benefits of Structural Soil Vault System
- Heavy Load bearing capacity.
TerraVault Modules have a high load bearing capacity of up to 65 t/sqm. UNCONFINED
- Uniform Load bearing Capacity
Each unit is self-supported and is a load bearing structure, unlike other products which use spacers.
- Modular Structure provides Design Flexibility
Modular Nature of the system helps designers to create any shape, any size and fits tight spot.
- Use Strength with Flexibility.
Reduce or Increase the number of internal support plates to use achieves Required load rating whilst keep costs low.
- High Internal Void Ratio.
TerraVault Modules have 95% internal void Ratio, meaning more space for un-compacted soil and roots and water management. Allowing heathy root and plant growth.
- High Surface void Ratio.
Up to 95% surface void ratio providing free un-obstructed root growth and movement in the un-compacted soils.
- Quick & Lightweight Easy to install.
TerraVault Modules are light weight and easy to install by unskilled labor, without the need of any heavy Machinery
- Available in Kit form.
Supplied in kit form its easy delivery and handling and reduces transport costs.
- Easy to Infill and Top Up.
Unlike other systems, this is a single component module which is easy to infill and lock in place. Reduces installation time and costs.
- Environmentally Friendly.
Made from Recycled Polypropylene the Terra Vault Modules are Green label Certified.
- High Lateral load Capacity
The TerraVault Modules have a high lateral load carrying capacity of > 7.5 t/sqm. Internal plate layout ensures uniform load distribution and load capacity. Lateral forces must also be considered for engineering design of tree pits, when in proximity of traffic areas.
- Interlocks
TerraVault units lock together vertically and laterally if required to form a single structure with excellent modular strength, both vertically and laterally.
- Enhances and Recycles Stormwater.
There are many WSUD methodologies to capture and utilize valuable rainfall using the TerraVault system and other Rainsmart product range to enhance growth of trees in an Urban Environment.
Terra Vault II – Specifications
| TerraVault- II Module Dimensions: | ||||||
| Module (Unit) | Width (mm) | Width (inches) | Length (mm) | Length (inches) | Height (mm) | Height (inches) |
|---|---|---|---|---|---|---|
| Single (1) | 600 | 23.62 | 600 | 23.62 | 360 | 14.72 |
| Double (2) | 600 | 23.62 | 600 | 23.62 | 690 | 27.16 |
| Triple (3) | 600 | 23.62 | 600 | 23.62 | 1020 | 40.15 |
| Soil Storage Volume: | ||||||
| Module (Unit) | Module Volume (L) | Module Volume (cf) | Module Volume (gal) | Soil Storage Volume (L) | Soil Storage Volume (cf) | Soil Storage Volume (gal) |
|---|---|---|---|---|---|---|
| Single (1) | 129.6 | 4.57 | 34.23 | 123.12 | 4.35 | 32.52 |
| Double (2) | 248.4 | 8.77 | 65.62 | 235.98 | 8.33 | 62.34 |
| Triple (3) | 367.2 | 12.96 | 97 | 348.84 | 12.31 | 92.15 |
| Item | Description | Value | Unit |
|---|---|---|---|
| Void Area | Area available for uncompacted soil storage vs plastic | > 95 | % |
| Surface Void Area | Open area where roots may grow in or out of the units | > 95 | % |
| Rib Thickness | Minimum thickness of load bearing members | 4.3–4.4 | mm (in) |
| (0.16–0.17) | |||
| Product Plate Details | Vertical column supports for maximum load bearing | — | — |
| Product Weight Details | Minimum 7.00 kg raw material required | — | — |
| Product Structural Design | Designed per CIRIA C680, FoS 2.75 | — | — |
| Service Temperature | Operating temperature range | -10 to 50°C | °C |
| -14 to 122°F | °F | ||
| Recycled Content | 85% polypropylene + 15% mix | 85% + 15% | % |
| Biological & Chemical Resistance | Resistant to mould, bacteria, chemicals | — | — |
| Ultimate Vertical Crush Strength | Pressure to crush entire unit | 65 | ton/sqm (PSI) |
| (92.45) | |||
| Ultimate Lateral Crush Strength | Pressure to crush side | 7.5 | ton/sqm (PSI) |
| (10.66) | |||
| Short Term Deflection | Vertical Deflection | 42.00 kN/m² | Per mm |
| Lateral Deflection | 2.8 kN/m² | Per mm | |
| Long Term Deflection | Vertical creep (50 yrs) | 1.08% | 95 kN/m² |
| Applied load | 3.88 mm | ||
| Lateral creep (50 yrs) | 1.41% | 15 kN/m² | |
| Applied load | 8.46 mm |
Application – Terra Vault II Structural Soil Vault System
- Streetscaping
- Car parks
- Roadways
- Plaza Paving
- Footpaths
- Medians
Terra Vault II Common Design Examples
Sales Enquires
For All Sales & Technical Enquiries Please Contact “Project Material Pty Ltd” – QLD Distributor Of Terra Vault II
Phone – 07 3171 3835
Email – design@projectmaterial.com.au
Unit 15, 18 Hinkler Court, Brendale, Nth Brisbane, QLD, 4500