High Performance Building Solutions

High Performance Building Enclosure Consulting 2015 Project Highlights


 

Whitewater Middle School, Charlotte Mecklenburg Schools - Charlotte, NC

Building Enclosure Consulting and Testing

HPBS performed a building enclosure assessment for Whitewater Middle school because of continual comfort complaints. A whole building air leakage test, thermography inspection and diagnostic inspection of the current building conditions determined the cause of the comfort complaints was due to an incomplete air barrier system allowing unconditioned outdoor air to enter the conditioned space.

Specific air barrier deficiencies were identified and recommendations were provided that could be implemented by the facility staff to correct the deficiencies. The recommendations included air sealing the exterior wall to roof intersection and blocking the connection of the vented soffit area to the conditioned space. Repairing the building envelope will reduce the load on the HVAC system, lower energy bills and provide a more comfortable working environment.


Livingstone College - Salisbury, NC

Building Enclosure Assessment

HPBS was contracted to conduct an existing building enclosure assessment to determine the uncontrolled air leakage into and out of the building envelope. The assessment was conducted following the ASHRAE methods for determining air infiltration.

Typical areas identified to require retrofit work were the original metal single pane windows, roof-to-wall intersection, door and window weather-stripping, and roof exhausts. Some of the buildings were poorly insulated thus attic air sealing and insulation was recommended.


Alutiiq Construction Company - Fort Gordon, GA

Building Enclosure Consulting and Testing

HPBS performed air leakage consulting, thermography inspections and whole-building air leakage testing services for three renovation projects at Fort Gordon, GA.  HPBS was retained to provide an Air Barrier Quality Control Plan, which included a review of the construction plans and specifications, periodic quality control inspections and final air leakage testing.  The design review revealed that wall assemblies scheduled to remain would by-pass the air barrier system and create significant air leakage.  Recommendations were made to correct this oversight.


Hangar Support Facilities– MCAS New River, NC

Building Enclosure Testing

HPBS conducted a whole-building air leakage test for a new hangar facility at Marine Corps Air Station, New River. HPBS provided quality control inspections, confidence testing and final air leakage testing services. The building was divided into 24 zones over its ¼-mile length and required a unique, multi-zone guarded testing protocol where fans in the smaller, first floor zones were simultaneously controlled by computer while using the larger second floor zone as a pressure reference. The 106,582 square foot, 2 story building exceeded the NAVFAC testing performance requirements. The building configuration required a 24-zone guarded air leakage test using 24 computer controlled blower door fans to provide the required continuous 75 Pascal pressure throughout the building.


ASU Chancellor’s Residence – Boone, NC

Building Enclosure Assessment

HPBS conducted a building enclosure assessment, a thermography inspection and an air leakage test in response to moisture management and comfort complaints. The air leakage test showed that the building’s air leakage rate was 2.3 times the North Carolina Residential Energy Conservation Code and 3.5 times the air leakage rate specified by the US Army Corps of Engineers standard for new construction and renovation projects. The assessment uncovered major air and thermal barrier design and construction flaws. HPBS provided a scope of work for correcting the deficiencies along with a cost estimate for the improvements and modeled the potential energy savings.


Company Operations Facility – Fort Benning, GA

Building Enclosure Consulting and Testing

HPBS performed Air Leakage consulting, Thermography inspections and whole-building air leakage testing services for a Company Operations Facility at Fort Benning, GA. HPBS provided a pre-construction design review, quality control inspections and final testing services. Issues uncovered during air barrier quality control construction inspections were quickly addressed. The building configuration required a 4-zone guarded air leakage test using eight computer controlled blower door fans.


Transient Wounded Warrior Lodge – Bethesda, MD

Building Enclosure Consulting and Testing

HPBS performed Air Leakage consulting, Thermography inspections and final air leakage testing services for the Transient Wounded Warrior Lodge at the Walter Reed Hospital Complex. HPBS was retained to provide a design review of the plans and specifications, quality control inspections, window air leakage testing and final air leakage testing services. HPBS also conducted a window air leakage chamber test of the window assembly to assist in resolving window leakage observed during construction.


Springboro School District – Springboro, OH

Building Enclosure Assessment and Testing

HPBS conducted Building Enclosure Assessments and air leakage testing for five schools in Springboro, Ohio having a combined total of 790,000 square feet.  The assessments uncovered major air leakage design and construction flaws and moisture management deficiencies.  A scope of work was developed for correcting the deficiencies along with a cost estimate for the improvements and estimated energy savings.  HPBS conducted air leakage testing prior to the weatherization efforts to quantify the potential air leakage savings; and will repeat the air leakage tests after weatherization improvements to compare before and after leakage of the building enclosure.


Stemmler Hall – Philadelphia, PA

Building Enclosure Assessment

HPBS conducted a building enclosure assessment, air leakage chamber test and thermography inspection in response to moisture management, air leakage and comfort concerns at the Stemmler Hall, which is scheduled to undergo a major renovation. The assessment uncovered major air and thermal barrier design and construction flaws. Air leakage chamber testing identified flaws in the newer metal frame windows that were installed in 2004 and determined the air leakage rate of the window assembly was greater than acceptable standards. HPBS provided a scope of work for correcting the deficiencies along with a cost estimate for the improvements. Computer modeling demonstrated the potential energy savings from the improvements.

 


Ridge Road Middle School – Charlotte, NC

Building envelope assessment

HPBS performed a building envelope assessment for Ridge Road Middle School due to continual comfort complaints. A review of the construction plans and building conditions identified several key air leakage sites that could be affecting the comfort of occupants in the building. HPBS performed an air leakage test to quantify the leakage rate and then compared the test results to current construction standards. Air barrier deficiencies were identified and recommendations were provided to further reduce the air leakage.


Fayetteville State University – Fayetteville, NC

Building envelope assessment

HPBS performed existing building envelope assessments for 26 buildings on Fayetteville State University’s campus to determine uncontrolled air leakage into and out of the building envelope. The assessment followed ASHRAE methods for determining air infiltrations. The buildings ranged in size from 4,000 square feet to 133,000 square feet and included warehouses, classrooms, science labs, administration buildings, the campus library, gyms and the natatorium.

Typical areas identified to require retrofit work were the original metal frame single pane windows, roof-to-wall intersection, door and window weather-stripping and air sealing around mechanical penetrations. Some of the buildings were poorly insulated thus attic and/or crawlspace air sealing and insulation was recommended.


Advanced Individual Training Complex – Fort Lee, VA

Building envelope consulting and testing

HPBS provided Air Leakage Testing and Thermography Inspections for AIT Phase I and Phase II.

AIT Phase I was partially finished when HPBS was contacted to perform the final testing and inspection. The first few buildings constructed did not originally meet the US ACE air leakage requirements and HPBS provided specifications and performed additional construction inspections to assist in resolving the air barrier issues so the buildings could successfully meet the US ACE air leakage requirements.

For AIT Phase II HPBS was engaged early in the construction process to provide design reviews and construction inspections to ensure the buildings in Phase II would successfully meet the US ACE air leakage requirements the first time without requiring additional retrofit work.

 


East 54 – Chapel Hill, NC

Building envelope consulting and testing

HPBS performed air leakage testing in accordance with USGBC’s Leadership in Energy and Environmental Design (LEED) for Indoor Air Quality Prerequisite 2. LEED requires the units demonstrate less than 1.25 square inches of leakage per 100 square feet of enclosure area.

Retrofit work was required to assist the units in meeting the air leakage requirements for LEED. HPBS provided diagnostic inspection services to identify air leakage areas and provided recommendations to correct air barrier failures. After addressing construction flaws the buildings met the LEED prerequisite.


Air Force/Navy Barracks – Fort Lee, VA

Building envelope consulting and testing

HPBS was contracted to perform Air Leakage and Thermography consulting and testing services. HPBS was retained early in the construction of the building and provided a design review, construction inspections and final testing services.

Recommended corrective measures were reviewed with the architect of record and applied to the building during construction resulting in a leakage rate that was 62% better than the US ACE requirements.

 


 

Child Development Centers – Fort Sill, OK, Fort Bragg, NC, Fort Campbell, KY

Building envelope consulting and testing

HPBS was contracted after the first phase of the Child Development Centers (CDCs) were already significantly constructed. The first step was to perform a whole building confidence test to determine if the constructed CDCs would meet the US ACE air leakage requirements. Unfortunately the first phase of buildings did not meet the requirements which required retrofit work to air seal the buildings to meet the US ACE air leakage requirements.

For the second phase of the CDCs HPBS was involved early on in the construction process to provide a design review, construction inspections and final testing services. The recommendations from the design review and construction inspections significantly improved the air leakage rates for the Child Development Centers.


Cox Mill Elementary School – Concord, NC

Building envelope assessment

HPBS performed a building envelope assessment for Cox Mill Elementary School due to continual comfort complaints. A reheat system was running year round to provide dehumidification. A review of the construction plans and building conditions determined the source of the elevated indoor humidity levels was due to an incomplete air barrier allowing unconditioned air to enter the conditioned space.

HPBS performed an air leakage test to quantify the leakage rate and then compared to current construction standards. The building was 65% leaker that current construction practices. Air barrier deficiencies were identified and recommendations were provided.