One contract. All systems.
No gaps between scopes.
One contract. All systems.
No gaps between scopes.
One contract. All systems.
No gaps between scopes.
Data center infrastructure isn’t built in silos. Cooling, electrical, and fire systems are deeply interdependent-decisions in one impact the others. When handled by separate contractors, these dependencies become risks at commissioning.
OneStac removes that risk.
01 MECHANICAL
Cooling systems engineered to support continuous, mission-critical operations.
Precision cooling design and installation for Tier III and Tier IV data centers, encompassing chilled water plants, CRAC and CRAH units, adiabatic and liquid cooling solutions, and advanced containment systems. Redundancy architecture is defined at the design stage and preserved through procurement and construction without deviation. Every system undergoes comprehensive load testing prior to commissioning, with certification issued only upon full performance validation.
Chilled Water Plants
CRAC and CRAH Systems
Liquid and Adiabatic Cooling Solutions
Hot/Cold Aisle Containment Systems
01 MECHANICAL
Cooling systems engineered to support continuous, mission-critical operations.
Precision cooling design and installation for Tier III and Tier IV data centers, encompassing chilled water plants, CRAC and CRAH units, adiabatic and liquid cooling solutions, and advanced containment systems. Redundancy architecture is defined at the design stage and preserved through procurement and construction without deviation. Every system undergoes comprehensive load testing prior to commissioning, with certification issued only upon full performance validation.
Chilled Water Plants
CRAC and CRAH Systems
Liquid and Adiabatic Cooling Solutions
Hot/Cold Aisle Containment Systems
02 ELECTRICAL
Power infrastructure engineered to support full maintainability without requiring facility downtime.
Our scope includes HT and LT power distribution, UPS systems, generator sets, busducting, PDUs, and integrated earthing and lightning protection systems. Concurrent maintainability is embedded as a foundational design principle rather than introduced as a retrofit. Redundancy architecture is defined at the single-line diagram (SLD) stage and strictly preserved through procurement and construction,with no substitutions or compromises.
HT and LT Power Distribution
UPS Systems and Generator Sets
Bus Ducting and Power Distribution Units (PDUs)
Earthing and Lightning Protection Systems
02 ELECTRICAL
Power infrastructure engineered to support full maintainability without requiring facility downtime.
Our scope includes HT and LT power distribution, UPS systems, generator sets, busducting, PDUs, and integrated earthing and lightning protection systems. Concurrent maintainability is embedded as a foundational design principle rather than introduced as a retrofit. Redundancy architecture is defined at the single-line diagram (SLD) stage and strictly preserved through procurement and construction,with no substitutions or compromises.
HT and LT Power Distribution
UPS Systems and Generator Sets
Bus Ducting and Power Distribution Units (PDUs)
Earthing and Lightning Protection Systems
02 ELECTRICAL
Power infrastructure engineered to support full maintainability without requiring facility downtime.
Our scope includes HT and LT power distribution, UPS systems, generator sets, busducting, PDUs, and integrated earthing and lightning protection systems. Concurrent maintainability is embedded as a foundational design principle rather than introduced as a retrofit. Redundancy architecture is defined at the single-line diagram (SLD) stage and strictly preserved through procurement and construction,with no substitutions or compromises.
HT and LT Power Distribution
UPS Systems and Generator Sets
Bus Ducting and Power Distribution Units (PDUs)
Earthing and Lightning Protection Systems
03 PLUMBING
Piping systems engineered and fully coordinated with the mechanical and fire protection systems they support.
Our scope includes chilled water and condenser water piping, industrial and facility plumbing, drainage systems, and integrated leak detection. All piping is designed and coordinated within the model to ensure seamless interface with connected mechanical and fire systems. Leak detection is incorporated as a core element of the piping scope from the outset-not treated as a separate package or deferred until after building envelope closure.
Chilled Water and Condenser Water Piping
Industrial and Facility Plumbing
Drainage Systems
Leak Detection Systems
03 PLUMBING
Piping systems engineered and fully coordinated with the mechanical and fire protection systems they support.
Our scope includes chilled water and condenser water piping, industrial and facility plumbing, drainage systems, and integrated leak detection. All piping is designed and coordinated within the model to ensure seamless interface with connected mechanical and fire systems. Leak detection is incorporated as a core element of the piping scope from the outset-not treated as a separate package or deferred until after building envelope closure.
Chilled Water and Condenser Water Piping
Industrial and Facility Plumbing
Drainage Systems
Leak Detection Systems
04 FIRE PROTECTION
Three decades of specialized fire engineering expertise, applied to the most demanding mission-critical environments.
We design, implement, and commission comprehensive fire protection systems, including gas-based suppression, pre-action sprinkler systems, VESDA early-warning detection, and integrated fire alarm and suppression controls. All solutions are engineered in full compliance with NFPA 75, NFPA 76, and FM Global requirements. Fire protection is not an ancillary capability-it is the foundation on which the organization was built. Our commissioning methodologies and trusted third-party testing partnerships reflect over thirty years of proven experience in protecting critical infrastructure.
Gas-Based Fire Suppression Systems
Pre-Action Sprinkler Systems
VESDA and Early-Warning Smoke Detection
NFPA 75 and NFPA 76 Compliance
04 FIRE PROTECTION
Three decades of specialized fire engineering expertise, applied to the most demanding mission-critical environments.
We design, implement, and commission comprehensive fire protection systems, including gas-based suppression, pre-action sprinkler systems, VESDA early-warning detection, and integrated fire alarm and suppression controls. All solutions are engineered in full compliance with NFPA 75, NFPA 76, and FM Global requirements. Fire protection is not an ancillary capability-it is the foundation on which the organization was built. Our commissioning methodologies and trusted third-party testing partnerships reflect over thirty years of proven experience in protecting critical infrastructure.
Gas-Based Fire Suppression Systems
Pre-Action Sprinkler Systems
VESDA and Early-Warning Smoke Detection
NFPA 75 and NFPA 76 Compliance
05 BUILDING MANAGEMENT SYSTEMS
The intelligence layer that unifies all critical building systems.
A data center’s mechanical, electrical, fire, and plumbing infrastructure continuously generates operational data; the Building Management System (BMS) is what converts that data into actionable insight. By monitoring performance, identify anomalies, and providing centralized visibility, the BMS enables operations teams to manage the facility through a single, coherent interface. OneStac designs, integrates, and commissions the BMS as an intrinsic part of the overall delivery. Not as a standalone package added at the end. When system designers and builders alsodeliver the BMS, monitoring logic accurately reflects how the infrastructure is engineered and operated in practice.
BMS Design and Systems Integration
SCADA and Control Systems
Energy Monitoring and Reporting
Fault Detection and Diagnostics
Secure Remote Monitoring and Operations
05 BUILDING MANAGEMENT SYSTEMS
The intelligence layer that unifies all critical building systems.
A data center’s mechanical, electrical, fire, and plumbing infrastructure continuously generates operational data; the Building Management System (BMS) is what converts that data into actionable insight. By monitoring performance, identify anomalies, and providing centralized visibility, the BMS enables operations teams to manage the facility through a single, coherent interface. OneStac designs, integrates, and commissions the BMS as an intrinsic part of the overall delivery. Not as a standalone package added at the end. When system designers and builders alsodeliver the BMS, monitoring logic accurately reflects how the infrastructure is engineered and operated in practice.
BMS Design and Systems Integration
SCADA and Control Systems
Energy Monitoring and Reporting
Fault Detection and Diagnostics
Secure Remote Monitoring and Operations