... As third-party consultants, we retain a unique perspective through participation in the design, construction, assessment, and forensic analysis of building envelopes. Our familiarity with the building envelope has shown us that the performance and life span of a building is remarkably dependent...

... team will share lessons learned from this case study that are now being utilized to improve the process for its projects moving forward. Building Enclosure Commissioning BECx roofing precast concrete building envelope case study storefront curtain wall testing 280 BUILDING SCIENCE...

... The thermal performance of building envelopes can be significantly affected by thermal bridging. Thermal bridges are localized areas of high heat flow through walls, roofs, and other insulated building envelope components. Thermal bridging is caused by highly conductive elements that penetrate...

... Building envelope standards and practices have evolved over the past few decades in response to increased energy efficiency goals and a better understanding of building science. New materials, systems, and detailing methods help to reduce thermal bridging and to reduce air leakage through...

... as they adapted to the new code requirements. The paper concludes with consideration of potentials for strengthening of air barrier testing provisions in future code cycles. air barrier energy code building envelope 20 WHOLE BUILDING AIR LEAKAGE: TESTING AND BUILDING PERFORMANCE IMPACTS STP 1615, 2019...

... Air leakage through a building’s envelope affects its overall durability and energy consumption, while also influencing the indoor air quality and the comfort of its occupants. To reduce the amount of air leakage in multi-unit residential buildings undergoing deep retrofits, we performed whole...

.... In this context, detailed information about heat insulation and airtightness is essential. The current approaches to detect air leakage in building envelopes are mostly time consuming and expensive. Therefore, the development of an advanced and more inexpensive method is a vital step. In this paper, we present...

... (USACE) and the Air Barrier Association of America (ABAA) published its Air Leakage Test Protocol for Building Envelopes in 2012. This protocol has been used successfully to test hundreds of buildings and has permitted the USACE to develop quantitative targets for its buildings. Using the USACE...

... and implementation of repairs, are discussed herein. The investigation revealed inadequate detailing around window openings and penetrations in the building envelope, along with incomplete construction of the exterior walls and walkway expansion joints. The improper construction allowed unconditioned exterior air...

... ASHRAE Standard 160, Criteria for Moisture-Control Design Analysis in Buildings , was published in 2009. The standard sets criteria for moisture design loads, hygrothermal analysis methods, and satisfactory moisture performance of the building envelope. One of the evaluation criteria specifies...

... wall systems that maximize the thermal performance when considering all these variables. air leakage ACH50 field test infiltration building envelope energy ADVANCES IN HYGROTHERMAL PERFORMANCE OF BUILDING ENVELOPES 83 STP 1599, 2017 / available online at www.astm.org / doi: 10.1520...

... was carried out to investigate the effect of uncertainty of rainfall data on the hygrothermal performance of a typical residential building envelope. Most hygrothermal models require fully populated hourly datasets, which include rain data. Many locations, however, do not have this kind of data although many...

... vapor pressure difference; and (5) Exploration of the concept that vapor pressure difference and indoor RH are limited by moisture removal on windows. residential buildings building envelope indoor environment tools field monitoring and measurements Reprinted from JAI, Vol. 6, No. 9 doi...

... to the case study building, and review of repair program parameters. facade survey assessment investigation masonry planar distortion displacement building envelope electronic survey techniques Kevin S. Coll1 and David A. VanOcker1 Journal of ASTM International, Vol. 4, No. 8 Paper ID...

... Industry standards for intrusive water leakage evaluations of the building envelope are promulgated by ASTM E 2128, “Standard Guide for Evaluating Water Leakage of Building Walls,” which lays out a purposeful step-by-step methodology by which information is accumulated and succeeding sampling...

... for the building remained unchanged, providing a unique opportunity to measure the true energy savings realized in a building strictly as a result of upgrading the building envelope. When the total heating and cooling costs after the first two full years of service were compared to the costs from years prior...

.... The author proposes that the current fragmented design process for different cladding materials and the reliance on materials-specific performance tests is too complex and needs to be streamlined in order to improve the overall performance of building envelope systems. building envelope components...

... Premature building failures and increased heating and cooling loads have made building envelope air leakage a growing concern in North America. In Canada, the National Air Barrier Association has made the inspection and testing of air barrier systems a mandatory requirement within its Quality...

... building code by dealing with the adequacy of the building envelope in terms of such issues as its materials and systems, the joints within and with other claddings, any secondary defense methods, disposal of moisture that does penetrate, and exposure and durability considerations. It is hoped...

... condensation may occur in the insulation and interior sheathing layers if the system is not properly designed for the prevailing climate. clay masonry water permanence building envelope condensation insulation W. Mark McGinley1and Robert S. K. van der Hoeven2 ENVELOPE ANALYSIS OF EXTERIOR LOAD...