EZ-KEYTM PRECAST
Get the data flowing, faster.
The Roman Stone EZ-KEYTM product line is a comprehensive, patent-pending system that substantially shortens installation times, significantly reduces on-site costs and dramatically enhances contractor efficiency.
Specifically designed for data centers, airports and major infrastructure projects, this innovative system helps address critical construction challenges, including labor shortages, demanding schedules and tight budgets.
The flagship of this new product line is the patent-pending EZ-KEYTM Duct Bank, for running high-, medium- and low-voltage cables and fiber cables. The system is engineered to install each 10-foot section in under two minutes.
KEY FEATURES
QUICK, COST-EFFECTIVE INSTALLATION
Precisely engineered Alignment Cones guide each pipe into its seating location in minimal time and with minimal labor
A STRONG, LOAD-BEARING DESIGN
Heavy-duty shear key is capable of withstanding extreme loads
FEWER STEPS & A PERFECT FIT EVERY TIME
Zip Pins lock each section together with speed and precision, using only a standard impact wrench
GREATER ON-SITE FLEXIBILITY AND CONTROL
- Our EZ-KEY-compatible vaults eliminate the need for pour-in-place interconnections.
- Reduces on-site costs and labor by eliminating manual conduit placement and pour-in-place materials.
- Quick installation times, just-in-time delivery and available on-site production increase contractor efficiency.
EZ-Key™ joint design is built to handle 55,000 lbs. of load, which is 3X the industry standard.

COMING SOON:
LOW-CARBON OPTIONS
Roman Stone will offer the entire EZ-KEY line with advanced, sustainable options, including: a special fiber reinforcement that eliminates steel rebar; and a carbon-negative concrete mix option to support carbon neutrality.
TECHNICAL SPECIFICATIONS
Product Dimensions & Weight Examples
- 9-6/2-4 FO/COMM Duct Bank: 4´ H x 3´ W x 10´ L
- 9-6 FO Duct Bank: 2´-6´´ H x 5´4´´ W x 10´ L
- 2-4 COMM Duct Bank: 16´´ H x 22´´ W x 10´ L
- Custom sizes also available
Load Ratings
- Traffic-rated; meets AASHTO HL93 standards
- Airport-rated; meets AASHTO LRFD standards
- Mix designs range from 3,000-7,000 psi depending on application
- Max Pick Weight: 14,000 lbs.
Handling & Installation
- Embedded lifting points for safe, balanced placement
- Heavy-duty shear key allows support of maximum force with no deflection
- Patent-pending Zip Pins ensure a perfect seal every time
- Foundation prep per ASTM C1675
- Patent-pending Alignment Cones ensure precise pipe alignment every time
- Immediate backfill after placement; compaction recommended in high-traffic areas
Scalable Logistics
- Transportation-friendly 30-100 feet of duct bank per truckload
- Mobile manufacturing available for dedicated onsite production






