A case study of a high end residential condominium building acoustical design and field performance testing

2014 ◽  
Vol 136 (4) ◽  
pp. 2151-2151
Author(s):  
Erik J. Ryerson ◽  
Tom Rafferty
Keyword(s):  
Performance Testing ◽  
Field Performance

Numerical study and field performance of rockbolt support schemes in TBM-excavated coal mine roadways: A case study

2021 ◽  
Vol 115 ◽  
pp. 104053
Author(s):  
Bin Tang ◽  
Mathias Yeboah ◽  
Hua Cheng ◽  
Yongzhi Tang ◽  
Zhishu Yao ◽  
...  
Keyword(s):  
Coal Mine ◽  
Numerical Study ◽  
Field Performance ◽  
Mine Roadways ◽  
Rockbolt Support

Evaluation of Asphalt Mixture Performance Using Cracking and Durability Tests at a Full-Scale Pavement Facility

2021 ◽  
pp. 036119812110218
Author(s):  
Amir Golalipour ◽  
Varun Veginati ◽  
David J. Mensching
Keyword(s):  
Performance Test ◽  
Asphalt Mixture ◽  
Performance Testing ◽  
Field Performance ◽  
Optimization Procedure ◽  
Cyclic Fatigue ◽  
Intermediate Temperature ◽  
Index Test ◽  
Reclaimed Asphalt ◽  
Indirect Tensile

In the asphalt materials community, the most critical research need is centered around a paradigm shift in mixture design from the volumetric process of the previous 20-plus years to an optimization procedure based on laboratory-measured mechanical properties that should lead to an increase in long-term pavement performance. This study is focused on advancing the state of understanding with respect to the value of intermediate temperature cracking tests, which may be included in a balanced mix design. The materials included are plant-mixed, laboratory-compacted specimens reheated from the 2013 Federal Highway Administration’s (FHWA’s) Accelerated Loading Facility (ALF) study on reclaimed asphalt pavement/reclaimed asphalt shingle (RAP/RAS) materials. Six commonly discussed intermediate temperature (cracking and durability) performance testing (i.e., Asphalt Mixture Performance Tester [AMPT] Cyclic Fatigue, Cantabro, Illinois Flexibility Index Test [I-FIT], Indirect Tensile Cracking [ITC, also known as IDEAL-CT], Indirect Tensile Nflex, and Texas Overlay Test) were selected for use in this study based on input from stakeholders. Test results were analyzed to compare differences between the cracking tests. In addition, statistical analyses were conducted to assess the separation among materials (lanes) for each performance test. Cyclic fatigue and IDEAL-CT tests showed the most promising results. The ranking from these two tests’ index parameters matched closely with ALF field performance. Furthermore, both showed reasonable variability of test data and they were successful in differentiating between different materials.

Field Performance and Analysis of 3-m-Diameter Induced Trench Culvert under a 19.4-m Soil Cover

2008 ◽  
Vol 2045 (1) ◽  
pp. 68-76 ◽  
Author(s):  
Bethanie A. Parker ◽  
Rodney P. McAffee ◽  
Arun J. Valsangkar
Keyword(s):  
Pressure Distribution ◽  
Earth Pressure ◽  
Field Performance ◽  
Overburden Pressure ◽  
Vertical Pressure ◽  
Earth Pressures ◽  
Design Loads ◽  
Horizontal Pressure ◽  
Two Stages

An induced trench installation was instrumented to monitor earth pressures and settlements during construction. Some of the unique features of this case study are as follows: (a) both contact and earth pressure cells were used; (b) part of the culvert is under a new embankment and part was installed in a wide trench within an existing embankment; (c) a large stockpile was temporarily placed over the induced trench; and (d) the compressible material was placed in two stages. The maximum vertical pressure measured in the field at the crown of the culvert was 0.24 times the overburden pressure. The maximum horizontal pressure measured on the side of the culvert at the springline was 0.45 times the overburden pressure. The column of soil directly above the compressible zone settled approximately 40% more than did the adjacent fill. The field results at the crown and springline compared reasonably with those observed with numerical modeling. However, the overall pressure distribution on the pipe was expected to be nonuniform, the average vertical pressure calculated by using numerical analysis on top of the culvert over its full width was 0.61 times the overburden pressure, and the average horizontal pressure calculated on the side of the culvert over its full height was 0.44 times the overburden pressure. When the full pressure distribution on the pipe is considered, the recommended design loads from the Marston–Spangler theory slightly underpredict the maximum loads, and the vertical loads control the design.

scholarly journals Combining Performance Testing and Metadata Models to Support Fault Detection and Diagnostics in Smart Buildings

2019 ◽  
Vol 2 (3) ◽  
pp. 28
Author(s):  
Elena Markoska ◽  
Aslak Johansen ◽  
Mikkel Baun Kjærgaard ◽  
Sanja Lazarova-Molnar ◽  
Muhyiddine Jradi ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Fault Detection ◽  
Performance Test ◽  
Performance Testing ◽  
Performance Tests ◽  
Actual Performance ◽  
Hypothetical Scenario ◽  
Wide Range ◽  
Promising Practice

Performance testing of components and subsystems of buildings is a promising practice for increasing energy efficiency and closing gaps between intended and actual performance of buildings. A typical shortcoming of performance testing is the difficulty of linking a failing test to a faulty or underperforming component. Furthermore, a failing test can also be linked to a wrongly configured performance test. In this paper, we present Building Metadata Performance Testing (BuMPeT), a method that addresses this shortcoming by using building metadata models to extend performance testing with fault detection and diagnostics (FDD) capabilities. We present four different procedures that apply BuMPeT to different data sources and components. We have applied the proposed method to a case study building, located in Denmark, to test its capacity and benefits. Additionally, we use two real case scenarios to showcase examples of failing performance tests in the building, as well as discovery of causes of underperformance. Finally, to examine the limits to the benefits of the applied procedure, a detailed elaboration of a hypothetical scenario is presented. Our findings demonstrate that the method has potential and it can serve to increase the energy efficiency of a wide range of buildings.

An improved model for predicting the efficiency of hydraulic propeller turbines

2005 ◽  
Vol 32 (5) ◽  
pp. 789-795 ◽  
Author(s):  
Jessica Manness ◽  
Jay Doering
Keyword(s):  
Performance Test ◽  
Performance Testing ◽  
Field Performance ◽  
Large Data ◽  
Hydraulic Turbine ◽  
Original Method ◽  
Large Network ◽  
Periodic Field ◽  
Data Set ◽  
Efficient Operation

Field performance testing of hydraulic turbines is undertaken to define the head-power-discharge relationship that identifies the peak operating point of the turbine. This relationship is essential for the efficient operation of a hydraulic turbine. Unfortunately, in some cases it is not feasible to field test turbines because of time, budgetary, or other constraints. Gordon (2001) proposed a method of predicting and (or) simulating the performance curve for several types of turbines. However, a limited data set was available for the development of his model for certain types of turbines. Moreover, his model did not include a precise method of developing performance curves for rerunnered turbines. Manitoba Hydro operates a large network of hydroelectric turbines, which are subject to periodic field performance testing. This provided a large data set with which to refine the model proposed by Gordon (2001). Furthermore, since these data include rerunnered units, this provides an opportunity to refine the effects of rerunnering. Analysis shows that the accuracy of the refined model is within 2% of the performance test results for an "old" turbine, while for a newer turbine or a rerunnered turbine the error is within 1%. For both an old turbine and a rerunnered turbine, this indicates an accuracy improvement of 3% over the original method proposed by Gordon (2001).Key words: hydraulic turbine, efficiency, simulation modeling

scholarly journals Performance Testing for VoIP Emergency Services: a Case Study of the EMYNOS Platform

2019 ◽  
Vol 151 ◽  
pp. 287-294 ◽  
Author(s):  
Budankailu Sameer Kumar Subudhi ◽  
Faruk Catal ◽  
Nikolay Tcholtchev ◽  
Kin Tsun Chiu ◽  
Yacine Rebahi
Keyword(s):  
Emergency Services ◽  
Performance Testing

scholarly journals Economic Assessment and Fungicide Use on Peanut Seed in the Southwestern United States1

2000 ◽  
Vol 27 (1) ◽  
pp. 39-39 ◽  
Author(s):  
D. T. Smith ◽  
M. C. Black ◽  
W. J. Grichar ◽  
A. J. Jaks
Keyword(s):  
Environmental Protection Agency ◽  
Seed Treatment ◽  
Field Performance ◽  
Economic Assessment ◽  
Management Program ◽  
Seed Treatments ◽  
Peanut Seed ◽  
Untreated Seed ◽  
The Impact

Abstract Seed protectant fungicides are an important part of a total pest management program of peanut and may reduce the use of other pesticides later in the growing season. A survey of peanut shellers was conducted to determine the amount of fungicide use and the important factors used in selecting particular fungicides for treating seed in the Southwestern United States. All peanut seed planted in Texas, Oklahoma, and New Mexico was treated with one or more fungicides and totaled 19,000 kg of five active ingredients applied on 12 million kg of seed. Captan was the leading active ingredient and made up 49% of all fungicide use. Shellers were the sole decision makers in selecting seed treatment fungicides and cited fungicide effectiveness and assurance of a good crop stand as the major factors in selecting a commercial product. Fungicide treatments made up 4% of the total cost of planting seed, for an average cost of $6.75/ha. A case study on the impact of seed treatments was conducted using 12 yr of field performance data in an economic assessment. Peanut yields were 36% higher when captan-treated compared with using untreated seed. In an economic assessment, net returns above variable costs were $331/ha higher when fungicide-treated seed was planted, compared to untreated seed. The case study showed that seed treatments provided positive economic returns in 10 out of the 12 yr and losses would result in 7 out of 12 yr if untreated seed were planted. Many of the present seed treatment fungicides will be reviewed by the U.S. Environmental Protection Agency and require re-registration under the Food Quality Protection Act of 1996.

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