Digital Fortress SEA-001

Data Center Space Planning & Performance Analysis

This concept design and fit out study analyzed options for maximizing the available server rack population in this existing collocation facility.  The project also evaluated a future expansion rack layout to assist the Owner in analyzing future cost benefits.

The planning effort included a detailed CFD analysis to not only verify the capability of the existing HVAC system to support the anticipated load, but to also identify potential fine tuning to the system to increase overall system capacity and redundant capacity.


Leonard is a registered architect with over 34 years of experience in a wide variety of commercial project types including over 27 years designing mission critical facilities.  Leonard's experience includes designing data centers for mainframe systems with water cooled processors to high density test and development sites, to cutting edge modular data centers with new, innovative cooling solutions.

Leonard is a founding member and serves on the board of the 7x24 Exchange Northwest Chapter.

Image courtesy of Clark Design, PLLC


Digital Fortress

Data Center Feasibility Study - Seattle and Tukwila

Cascade Mission Critical, LLC led a team to evaluate the potential for increasing the available critical power at this client's two facilities in the Seattle area.  Working with Stantec, MacDonald Miller, Engineers NW and Venture Seattle, Cascade Mission Critical helped develop conceptual designs and budgets to maximize the potential at each of these sites.

Confidential Client

Data Center Facility Evaluations - US and Europe

Cascade Mission Critical, LLC provided project management for the electrical evaluation of five data center sites in the US and Europe.  This client wanted be assured that the electrical infrastructure of each site truly supported high availability power distribution for their rack environment in the colocation space.  Cascade contracted with Stantec Consulting Services for the review of the US sites and engaged with Cundall Engineering out of London for the review of the European sites.

Cascade Mission Critical, LLC provides design, project management, analytical and consulting services to the data center and telecommunications industries.

In depth knowledge and experience in the data center industry supporting 21st century digital businesses.


Cascade Mission Critical, LLC has a broad base of experience in data center design and consulting for collocation, enterprise, telecommunications, cloud and academic computing clients across North America.


With project experience from small server rooms to very large, high density data centers, Cascade Mission Critical is ideally positioned to help guide data center designers, users, and constructors in achieving project success.

Leonard Ruff, AIA

Owner and Founder


Confidential Client 

Data Center Master Planning

Cascade Mission Critical provided master planning services of this data center facility in the Seattle area to determine options and phasing opportunities for reconfiguration and critical infrastructure updates.

Originally constructed in 2000, this facility includes over 66,000 s.f. of dedicated data center area, divided across six collocation suites.  The planning process developed methodologies to reconfigure the existing critical infrastructure to provide up to 6.2 mW of power to the collocation suites, while re-configuring the topology of the critical power system to allow for greater flexibility in customer deployment.

The project team included Clark Design who provided planning assistance and graphics, as well as the McKinstry Company who provided mechanical and electrical engineering.


Cascade Mission Critical, LLC

Leonard A. Ruff, AIA


6210 36th Avenue N.E.

Seattle, WA  98115

P:  +1 206-294-1288


Confidential Client

European Data Center Project Management Support

Cascade Mission Critical, LLC provided project management support during the design and pre-construction phases of this planned €220m data center project to be located in northern Europe.  The project will encompass over 500,000 sf of facility, with up to 8 data halls supporting a critical IT load of 7.5 mW each, with a total power capacity for the facility of 120 mW.  The project included extensive coordination with the Owner’s internal and external design teams, along with detailed coordination with the selected general contractor in developing bidding and scheduling strategies for the development of the project.​​

TBST, LLC Used with permission