Specialty Contractors For Demanding Environments

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Data Center Growth

Data Center Growth

Longden Company has completed a 21,000 square foot data center expansion for EdgeConneX in Billerica, MA. This 30” high Concore 1250 access floor system includes underfloor air distribution cooling as well as underfloor power & data. This new space allows for continued growth of the EdgeConneX ‘Edge Data Center’ capabilities including future tenant racks, cages and expanded cooling capacity. The high pressure laminate finish allows for increased durability and low static generation.

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Server Infrastructure Upgrade

Server Infrastructure Upgrade

Longden Company recently completed a 5,000 square foot server lab infrastructure upgrade project for Casa Systems in Andover, MA. This project included demolition of existing wet sprinkler and mechanical systems to allow for installation of a pre-action sprinkler system tied into a special hazard fire detection system, along with the implementation of Liebert CRV precision in-row cooling units and Liebert PDX perimeter cooling units to supply cool air to server racks and modem racks, respectively. Longden also installed new electrical switchgear and power distribution, including Starline track busway, for point-of-use plug-in capabilities.

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Tiered Access Flooring

Tiered Access Flooring

Longden Company has completed an installation of 3,500 square feet of raised access flooring in Tiered Classrooms and an Auditorium space at the new UMASS Dartmouth Charlton College of Business. These new tiered spaces allow each student immediate access to power and data connections through seamless integration with furniture, which has become essential in today’s highly connected classrooms. The Auditorium includes underfloor air distribution along with under floor power & data distribution. High efficiency LED lighting was incorporated into the risers at each tier alongside custom stainless handrails. Tate ConCore 1250 panels were finished with carpet tile for simple under floor access.

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Yale Clean Room

Yale Clean Room

These two adjoining bays total 1,700 square feet of ISO Class 6 Cleanroom. Construction details include a 2” Plascore wall system, a Gordon gasketed cleanroom ceiling grid and Tate perforated raised access flooring for air return. Additionally there are two custom manual sliding doors, a custom high speed roll up door, and a custom ULPA filtered stainless steel pass-through.

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Credit Union Access Floor

Credit Union Access Floor


Longden installed 45000 square feet of Tate Concore 1000 bare panel for the Service Credit Union headquarters in Portsmouth NH. This system utilized Underfloor Air Distribution for HVAC, which improves air quality and reduces energy costs. Longden designed bridging and supports to span over the HVAC ductwork. The photo of the unfinished floor illustrates the flooring installed just short of the window wall to accommodate registers to allow airflow to rise in front of the windows.

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High Bay Clean Room

High Bay Clean Room


This project included 4,100 square feet of ISO 6 cleanroom. The space was 25′ tall, with ducted return air chases. Eight of these chases were 6′ wide x 8′ high. The walls were constructed of 1/4″ aluminum cleanroom panel system (Plascore) on metal stud framing. The ceiling is a Gordon system, gasketed aluminum, with Plascore 1/4″ aluminum blank ceiling tiles.

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Financial Institution Server Room

Server Room - Cambridge Trust

Longden designed and built this dedicated server room for a financial institution located in Burlington, MA. We managed all aspects of construction, including carpentry, electrical, HVAC and mechanical systems. Equipment installed includes redundant 20KW in-row Liebert CRV air-cooled AC systems, redundant 30KW Emerson EXM UPS systems with A/B whip distribution to critical load, a preaction sprinkler system with dedicated smoke detection and panel. All systems are protected by a 250KW natural gas Caterpillar generator. This also backs up the call center and disaster recovery functions for this corporate office.

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AIR FLOW SOLUTIONS

GrateAire™

GrateAire™

DirectAire™

DirectAire™

PowerAire™

PowerAire™

SmartAire™

SmartAire™

Grommets

Grommets

SubZero™

SubZero™