... the two has been challenged by forensic experts who base their opinions on unsubstantiated claims of reduced service life of a dimpled roof due to moisture retention and microfracture within a hail divot. The Metal Building Manufacturers Association (MBMA) recently completed two research projects...

... visual mechanical attachment of glazed elements. In general, the past 45 years have shown that the silicone sealants previously and currently employed have remained durable enough to maintain a healthy service life, but what is the actual service life of these systems? Because there is a life-safety...

... At the Seventh Symposium on Roofing Research and Standards Development, a new, quantitative method for evaluating service life of a single 55 % aluminum-zinc (Al-Zn) alloy-coated steel low-slope standing seam roof (SSR) system was presented and subsequently published. Using samples from a roof...

... of the regular preventive maintenance process and, consequentially, an identification of opportunities for minor repairs, which can have a remarkable effect on prolonging the working life of the sealed joint. ASTM C1521 ASTM C1736 working life service life sealant sealed joint DURABILITY...

... During the service life of firefighters' protective clothing, individual aspects of its performance change due to factors such as thermal exposure. Although there are some standards for the inspection of firefighters' protective clothing, test methods that could be used to completely determine...

... Published surveys concerning roof service life incorporate estimates from roofing professionals based on their observations and opinions. In cases where roofing products have been in service long enough for the end of life to be observed, these data have some merit, but when end-of-life...

... The service life of our nation's infrastructure has become a topic of increasing focus in recent years. While above-ground infrastructure deterioration is readily apparent, the infrastructure beneath the surface can be much worse and yet is often largely ignored until it is too late. Since...

... material. This paper presents the protocol for evaluating the stresses in these critical structural members with new testing methods for determining the long-term stress capacity or service life for these members. This test method provides an alternate long-term stress crack evaluation protocol...

... is left to recover in length after installation ensures that the axial tensions that redevelop are at low levels. A calculation procedure is introduced to determine the axial force distribution along the pipe during installation and over its service life. Pulling force modeling similar to that outlined...

... in the evaluation of the durability performance of sealed or adhered joints in immersed environments. durability lifetime service life water immersion joint sealed bonded Arrhenius Andreas T. Wolf1 Reprinted from JAI, Vol. 5, No. 8 doi:10.1520/JAI101721 Available online at www.astm.org/JAI Effects...

... Despite extensive research on durability of building materials and components performed over the past two decades, no reliable quantitative method of service life prediction (SLP) has gained wide acceptance. Generic guidance is provided in documents published by ASTM, RILEM, EOTA and ISO...

... polymer modified properties PVC ranking roofing SBS service life single ply TPO UV exposure David M. Bailey, 1Carl G. Cash,2 and Arthur G. Davies, Jr.3 Update: Service Life Tests for Roofing Membranes Reference: Bailey, D. M., Cash, C. G. and Davies, Jr., A. G., "Update: Service Life Tests...

... test methods developed in Canada in the late 1950s and early 1960s, subsequently used as the basis of most IG unit test methods worldwide, were intended to assess the likelihood of successful performance through the IG unit manufacturer's warranty period, not to determine service life span. In the 1980...

... results point out the importance of matching the spectral power distribution of the real environment for obtaining the most accurate durability assessment. An approach for estimating service life for these inks is also described. light color exposure testing indoor weathering durability...

... The steps required for the development of a Zr-2.5Nb pressure tube with a 30-year service life are outlined. The life-limiting factors of fracture and deformation are described, and progress towards closing the gap between the properties required to meet the target lifetime and the behavior...

... diffusivity permeability calcium nitrite modeling service life Neal S. Berke I and Maria C. Hicks2 PREDICTING TIMES TO CORROSION FROM FIELD AND LABORATORY CHLORIDE DATA REFERENCE: Berke, N. S. and Hicks, M. C., "Predicting Times to Corrosion from Field and Laboratory Data," Techniques to Assess...

... that which would induce corrosion. Other types of testing and analytical techniques that may be used in future investigations to assess the performance of the piles and to predict their useful service life are also discussed. chloride ions concrete corrosion diffusion half-cell potentials marine...

... visually inspected once each year. Preliminary findings indicate that the test roofs are performing well. field performance low-slope roofing membrane properties modified bitumen service life single-ply roofing roofing David M. Bailey I, Walter J. Rossiter, Jr. 2, James F. Seiler, Jr. 3 T...

... in peel, be an integral part of any methodology that evaluates the performance of seams. adhesive thickness building technology creep-rupture EPDM seams surface condition service life single-ply roofing time-to-failure Walter. J. Rossiter, Jr., Jonathan W. Martin, James A. Lechner, Edward...

... recognized that life-cycle cost analyses of viable alternatives are required. This necessitates the development of reliable means for predicting the service lives of alternative procedures. The major components of a rational model for predicting service life in this scenario center on the time...