Subsurface Vault System
Underground infrastructure engineered for telecommunications equipment with mechanical access, environmental protection, and modular design. Built for long-term reliability in mission-critical deployments.
No Electrical Power. No Confined Space Entry. No Compromises.
When surface-level infrastructure isn't feasible, our subsurface vault provides a comprehensive solution for protecting telecommunications equipment below ground while preserving above-ground aesthetics.
The fully mechanical extraction system operates without electrical power—meaning equipment can be accessed even before power is delivered to the site or during power outages. No one ever needs to enter the vault.
All equipment is mounted on a central cartridge that can be pre-installed and tested at a third-party facility off-site, then dropped into place during installation. This eliminates confined space concerns, accelerates deployment, and enables rapid equipment swaps without specialized crews.
With hot-dipped galvanized steel construction, integrated water management, and optional climate control, the vault system is built for decades of service in the harshest underground environments.
Core Features
Safe, Accessible, and Power-Independent
Zero electrical power required. Zero confined space entry. Complete equipment access from street level—even before power is delivered to the site or during outages.
No Electrical Power Required
Fully mechanical extraction works before power delivery or during outages - equipment accessible anytime
No Confined Space Entry
Personnel never enter the vault - all installation and maintenance performed from street level
Off-Site Pre-Installation
Cartridge can be equipped and tested at third-party facilities, then dropped in place
Climate Control
Isolated exhaust and intake ventilation with fan-assisted airflow protects equipment
Water Management
Drywell system with sump pump for comprehensive water mitigation in all conditions
Tool-Free Operation
Mechanical column extraction requires no special tools or electrical connection
Secure System
Single point of access with mechanical secure locking prevents unauthorized entry
Flush with Grade
Completely concealed when closed - no visual impact on streetscape aesthetics
See It In Action
No Power. No Entry. Complete Access.
Watch the fully mechanical extraction system operate without any electrical power. The cartridge rises from street level—no one ever enters the vault.
This works even before power is delivered to the site or during power failures. All equipment installation and removal happens from the surface.
Mechanical extraction operates independently of electrical power—accessible before energization or during outages
Installation Workflow
Pre-Install Equipment Off-Site, Drop in Place
The interchangeable cartridge design enables complete equipment integration at third-party facilities before field installation.
Equip & Test Off-Site
Mount all telecommunications equipment on the cartridge at a third-party facility. Run full integration testing and QA in a controlled environment.
Transport to Site
Deliver the fully-equipped cartridge to the installation site. The sealed cabinet protects equipment during transport and staging.
Drop & Connect
Lower the cartridge into the vault casing from street level. Connect utilities and close—no personnel ever enter the vault structure.
Benefits of Off-Site Integration
System Components
Modular Design
Five integrated components work together to create a flexible, future-proof subsurface infrastructure system.
Casing
Protective outer shell engineered for long-term underground installation with multiple configuration pockets for utility connections.
- Hot-dipped galvanized steel construction
- Excavation protection with void space management
- Receiving pockets for multiple configurations
- Geotechnical engineering considerations integrated
Cartridge
The heart of the system: a sealed, interchangeable cabinet that can be fully equipped and tested at third-party facilities off-site, then dropped into place. All equipment installation and removal happens from street level—no one ever enters the vault.
- Pre-install equipment at third-party facilities
- Drop in place from street level
- Swap entire cartridge in minutes for upgrades
- Sealed cabinet protects equipment during transport
Lid
Swivel design with 180° swing mechanism providing full access while maintaining flush-with-grade appearance when closed.
- 180° swivel mechanism
- Mechanical secure locking
- Drip edge prevents water intrusion
- Flush with grade when closed
Cable Track
Organized coax and power cable management system ensuring proper routing and protection for all utility connections.
- Organized coax routing
- Power cable separation
- Protected pathways
- Scalable for multiple carriers
Column
Fully mechanical rising column operates without electrical power—even before power is delivered to the site or during outages. Extracts the entire cartridge from street level, eliminating all confined space entry requirements.
- No electrical power required—ever
- Works before site energization or during outages
- Tool-free mechanical extraction from street level
- Zero confined space entry for installation or maintenance
Water Management
Multi-layer protection keeps equipment dry in all conditions. The integrated drywell catches water between cartridge and casing, managing infiltration through soil permeation. A sump pump in the cartridge provides additional mitigation for extreme conditions.
- Drywell catches water between cartridge & casing
- Water management through soil permeation
- Sump pump in cartridge for water mitigation
- Lid drip edge prevents water return
- Site preparation optimized for drainage
Climate Control
Thermal management protects sensitive electronics from temperature extremes. Isolated exhaust and intake ventilation prevents heat recirculation, while strategic vent placement optimizes airflow for maximum efficiency.
- Isolated exhaust and intake ventilation
- Strategic vents allow heat out & fresh air in
- Fan-assisted airflow for active cooling
- AC system/heat pump available for extreme environments
- Thermal break between intake and exhaust
Technical Specifications
Size Options
Custom configurations designed to meet varying capacity requirements and site constraints. Two examples below.
Mini Macro Cell
- Square or round grate options
- Multi-tenant capable
- High-capacity equipment mounting
- Extended depth configurations
Small Cell
- Square or round grate options
- Compact footprint
- Standard depth configurations
- Ideal for dense urban deployments
General Specifications
Material
Hot-dipped galvanized steel
Load Rating
AASHTO compliant
Access
Fully mechanical - no power required
Climate Control
Isolated ventilation with optional AC/heat pump
Water Management
Integrated drywell with sump pump
Certification
ISO 9001:2015 Certified
Installation Examples
Complete Technical Specifications
Download the full technical specification sheet including detailed diagrams, component breakdowns, dimensions, and engineering data for both vault sizes.
Need site-specific engineering or custom configurations? Our team can adapt the vault system to meet unique project requirements.
Discuss Your Subsurface Infrastructure Needs
Every site has unique requirements. Let's design a vault solution that protects your equipment and meets local standards.
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