Search results

Title: UNDERSTANDING DELIBERATIVE AND INTUITIVE DECISION MAKING ABOUT HAZARDS ON CONSTRUCTION SITES
Creator: Saxena, Jaya
Date: 2013, 2013-12
Description: During the course of performing daily tasks, construction workers encounter numerous hazards, such as ladders that are too short to reach the...
Show moreDuring the course of performing daily tasks, construction workers encounter numerous hazards, such as ladders that are too short to reach the work area, energized electrical lines, or inadequate fall protection. When a hazard is encountered, the worker must make a rapid decision about how to respond and whether to take or avoid the risk. The goal of this researchwas to construct a theory about the influence of decision cues on intuitive and deliberative decision-making in high-hazard construction environments. Drawing from Cognitive Continuum Theory, the study specifies a framework for understanding why and how construction workers make decisions that lead to taking or avoiding physical risks when they encounter daily hazards. A secondary aim of the research was to construct a set of hypotheses about how specific decision cues influence whether a worker is more likely to engage their intuitive impulses or to use careful deliberationwhen responding to a hazard. These hypotheses are described and the efficacy of the hypotheses was evaluated using cross-tabulations and nonparametric measures of association. While most of the associations between decision cues and decision mode (i.e., intuition or deliberation) identified in this data set were generally modest, none of the associations were statistically zero, thus indicating that further research is warranted based on theoretical grounds. The qualitative data set was analysed using Decision Trees and Recognition Primed Decision Models.A rigorous program of theory testing is the next logical step to the research, and the thesis thus concludes with numerous suggestions for extending the research and testing the proposed hypotheses
M.S. in Civil Engineering, December 2013
Show less

Title: SERVICEABILITY REQUIREMENTS FOR FLOOR SYSTEMS - A REVIEW OF CURRENT STANDARDS AND PRACTICES
Creator: Jaafari, Chaimaa
Date: 2017, 2017-07
Description: Serviceability requirements are considered in any design to maintain the occupants’ comfort in buildings. Specifically, issues such as floor...
Show moreServiceability requirements are considered in any design to maintain the occupants’ comfort in buildings. Specifically, issues such as floor system deflections and vibrations are two important considerations for design as relate to serviceability. Design codes primarily address the deflection control yet rarely address the vibration. Although the vibration may be related to deflection, maintaining the comfort of occupants will require a detailed study on the level of vibration and its frequency that would be comfortable to the occupants. This research will examine and summarize the serviceability requirements as suggested by various codes and standards and also as suggested by published papers. Specifically, the research focuses on deflection and vibration control for floor systems based on the occupancy and usage and the types of structures and sources of vibrations. Methods to alter existing floor system designs to control vibrations will also be presented. The final research outcome will be a complete document summarizing the findings on what is perceived as good practice for deflection and vibration control for floor system designs in buildings.
M.S. in Civil Engineering, July 2017
Show less

Title: AN INVESTIGATION INTO FIRE ENDURANCE OF WOOD AS A STRUCTURAL MATERIAL IN TALL BUILDINGS
Creator: Ling, Lei
Date: 2014, 2014-05
Description: With the global growth in using timber as a structural material for tall buildings to respond to the trend of sustainability, several timber...
Show moreWith the global growth in using timber as a structural material for tall buildings to respond to the trend of sustainability, several timber buildings from 7 stories to 10 stories have already been built in Europe and Australia. However, in the United States, timber buildings are still limited to 6 or less stories [2]. The motivation of this thesis is to respond to the proposal for fire safety challenges of tall wood buildings issued by the Fire Protection Research Foundation. Since using timber as a structural material is just underway, more related studies from different academic departments and organizations are required in order to characterize the fire performance of tall timber structures, investigate the related challenges and necessary research to achieve a high level of safety and property protection equal to those offered by concrete or steel structures, and promote the development of this type of building systems. This thesis presents a literature review of global design cases of timber buildings, corresponding calculations of fire-resistance rating, recent and ongoing fire tests, and adhesive effects of timber members. A gap analysis was developed, with current challenges of building timber buildings presented, focusing on structural design, fire protection, durability, and code regulations requirements. This gap analysis was then compared with other similar published papers in an attempt to have a better understanding of what areas of research are needed, and suggesting for further studies to promote the idea of using timber as a structural material for tall buildings.
M.S. in Civil Engineering, May 2014
Show less

Title: OPTIMIZATION OF WHOLE HOUSE RETROFIT PACKAGES FOR TARGETING 50% ANNUAL ENERGY USE REDUCTIONS IN PRE-1978 CHICAGOLAND HOMES
Creator: Aguilar Leinartas, Honnie
Date: 2014, 2014-07
Description: New standards and guidelines for energy consumption for the various building sectors in the United States are being developed by organizations...
Show moreNew standards and guidelines for energy consumption for the various building sectors in the United States are being developed by organizations such as the US Department of Energy and others. These typically include goals for all existing residential buildings to pursue deep energy retrofits that reduce their energy consumption by at least 50% relative to the regional average for the 2005 stock of that particular building type by the year 2030. To better inform these energy savings goals, this work relies on whole building energy simulation and optimization to construct a “tool-box” of prescriptive deep energy retrofit solutions that can be applied to a large portion of a subset of the housing stock responsible for a significant portion of residential energy use in the Chicagoland area: existing single-family detached homes built prior to 1978. Ten typology groups of pre-1978 single-family homes were considered for energy retrofit package optimization with a target of 50% annual site energy reductions. Simulations were conducted as a two-step process using sequential search optimization functions in BEopt and EnergyPlus as the simulation engine. First, optimizations of the building enclosure for each typology were performed and the combined highest efficiency, least cost packages were applied to the base models. Second, optimizations based on the modified base models were performed using several heating, ventilation and air-conditioning (HVAC) system options, and an optimal cost-effective package was chosen for each typology based on maximizing annual energy reductions, payback periods, and modified internal rates of return (MIRR). Results reveal that prescriptive deep energy retrofit solutions can indeed be defined for each typology that achieve at least 50% site energy reductions, largely through common envelope retrofit measures for all groups and either upgrades to existing HVAC system efficiency or a conversion to mini-split heat pump (MSHP) systems. A scaling analysis suggests that widespread application of the prescriptive deep energy retrofit solutions described herein to the entire Chicagoland residential building stock could save between $400 and $1300 on energy costs per year per home, depending on typology, summing to a total of approximately $280 million per year in savings across all Chicagoland homes.
M.S. in Civil Engineering, July 2014
Show less

Title: Paving the business section of Tama, Iowa with vitrified brick
Creator: Collins, Charles W
Date: 2009, 1915
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/pavingbusinessse00coll
Thesis (B.S.)--Armour Institute of Technology

Title: Plans, specifications, and estimate of cost for pavements for the Wassel and Bramberg Austin Subdivision of Chicago Illinois
Creator: Brower, R. B., Edelstein, E., Foy, E. A., Hemple, H. W.
Date: 2009, 1916
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/plansspecificati00brow
Thesis (B.S.)--Armour Institute of Technology;Includes folded leaves in back pocket...
Show morehttp://www.archive.org/details/plansspecificati00brow
Thesis (B.S.)--Armour Institute of Technology;Includes folded leaves in back pocket Bibliography: leaves 130-157
Show less

Title: Power consumption tests of double deck bascule bridge
Creator: Crown, V. M, Bush, L. C.
Date: 2009, 1918
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/powerconsumption00crow
Thesis (B.S.)--Armour Institute of Technology, 1918 B.S. in Civil Engineering, 1918

Title: Plans, specifications and cost of proposed western branch of the southwest land tunnel
Creator: Douthitt, M. J., Pollak, Ernest
Date: 2009, 1908
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/plansspecificati00dout
Thesis (B.S.)--Armour Institute of Technology

Title: Original report to Lakeworth inlet district
Creator: Hills, G. B.
Date: 2009, 1918
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/originalreportto00hill
Thesis (B.S.)--Armour Institute of Technology

Title: Sanitation of the Isthmus of Panama during the constructive period
Creator: Smith, S. M
Date: 2009, 1915
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/sanitationofisth00smit
Thesis (B.S.)--Armour Institute of Technology, 1915 Bibliography: leaf 39 B.S. in Civil...
Show morehttp://www.archive.org/details/sanitationofisth00smit
Thesis (B.S.)--Armour Institute of Technology, 1915 Bibliography: leaf 39 B.S. in Civil Engineering, 1915
Show less

Title: AN OVERVIEW OF INSPECTION, REHABILITATION AND MONITORING METHODS USED FOR CHICAGO’S MOVABLE BRIDGES
Creator: Jalabert, Patrick C.
Date: 2012-07-09, 2012-07
Description: Chicago is the historical birthplace of movable bridges. Earlier than any other city in the world, this Midwestern city started developing...
Show moreChicago is the historical birthplace of movable bridges. Earlier than any other city in the world, this Midwestern city started developing solutions to obstacles facing river transportation through innovations in moveable bridge design. With over forty movable bridges built, today, the city faces a major rehabilitation issue with the deterioration of these bridges. The need to assess the condition, and plan for the future sustainability of these bridges, is vital to Chicago’s economy and to the safety of thousands of people who cross the Chicago River every day. As many other cities in the world face problems with their moveable bridges, any plan by pertinent agencies to rehabilitate bridges in Chicago is expected to set standards for the rehabilitation and maintenance of moveable bridges. An overview of guidelines set forth by the American Association of State Highway and Transportation Officials (AASHTO) and procedures and/or methods adopted by local authorities to inspect, repair and reconstruct moveable bridges in Chicago, are important steps in identifying the underlying issues related to the structural condition and degradation process of the many movable bridges still in operation in Chicago. The objective of this study is to review (1) current practices for movable bridge inspection, repair and rehabilitation; and (2) actual repairs projects, conducted under the authority of the Chicago Department of Transportation’s Division of Engineering, to identify and summarize the underlying structural and/or serviceability issues that are inherent to movable bridges in Chicago. Specifically, the study is expected to highlight a number of important issues that stem from age, repeated use and factors that have caused deterioration of Chicago’s movable bridges and the type of repairs that may be needed to guarantee the future safe operation of these bridges.
M.S. in Civil Engineering, July 2012
Show less

Title: ORGANIZATIONAL CULTURE IN SCHEDULING UNITS AND ITS EFFECTS ON CONSTRUCTION DELAY
Creator: Nayak, Shruti
Date: 2011-07-14, 2011-07
Description: n/a
M.S. in Civil Engineering, July 2011

Title: AN INVESTIGATION INTO THE SIGNIFICANCE OF LENGTH-THICKNESS RATIO IN GUSSET PLATE BEHAVIOR IN BRIDGE TRUSSES
Creator: Olechno, Patrick
Date: 2012-07-12, 2012-07
Description: n/a
M.S. in Civil Engineering, July 2012

Title: Proposed hydraulic power development on East Canada Creek at Ingham Mills, New York
Creator: Buck, G. W., Deveney, W. J., Lettermann, G. D.
Date: 2009, 1910
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/proposedhydrauli00buck
Thesis (B.S.)--Armour Institute of Technology

Title: Proposed hydraulic development at Bow Fort Falls, Alberta, Canada
Creator: Wignall, W. J.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/proposedhydrauli00wign
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket

Title: Proposed hydro-electric development at French's Mill, N.Y.
Creator: Cramer, August C., Wood, John, Lucas, John T.
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/proposedhydroele00cram
Thesis (B.S.)--Armour Institute of Technology

Title: Proposed hydro-electrical development on the Columbia River at the Dalles, Oregon
Creator: Ehrlich, W. M, Roberts, W. F., Norton, J. C.
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/proposedhydroele00ehrl
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket ;...
Show morehttp://www.archive.org/details/proposedhydroele00ehrl
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket ; Bibliography: leaf 25
Show less

Title: SAFETY IMPACTS OF INTERSECTION RED LIGHT ENFORCEMENT IN CITY OF CHICAGO
Creator: Lee, Yongdoo
Date: 2011-07-19, 2011-07
Description: Red light running at highway intersections has been a major safety concern in the United States because it often results in a...
Show moreRed light running at highway intersections has been a major safety concern in the United States because it often results in a disproportionally higher percentage of injuries than other type of crashes. Statistics shows that about 45 percent of red-light running crashes would cause injuries compare to 30 percent associated with other type of crashes. Over the past decade, many city and county governments in the United States have begun to deploy red-light enforcement systems aimed to reduce red-light running related crashes for the benefits of safety improvements. In particular, the city of Chicago has implemented the red-light enforcement system since 2004. As of the end of 2010, more than 200 signalized intersections have been equipped with red light enforcement devices. This research attempts to evaluate the effectiveness of red light enforcement system deployed in Chicago in reducing types of target crashes including head-on, rear-end, angle, turning, sideswipe- same direction, and sideswipe- opposite direction by fatal, injury, and property damage only (PDO) crash severity category. Data on approximately 1,000 signalized intersections are collected for the analysis. These intersections are classified as three categories: untreated intersections without signal modernization and no red light enforcement, Type I treated intersections with both signal modernization and red light enforcement, and Type II treated intersections with signal modernization only. The Empirical Bayesian (EB) approach has been employed to quantify the crash reduction effects of red light enforcement that would avoid the regression-to-mean biases in the estimation. First, data on untreated intersections are used to calibrate safety performance functions for injury, PDO, and total crashes per intersection per year. The SPFs are then used to establish the EB-adjusted crash frequencies for Type I treated intersections for the before modernization period and Type II treated intersections for the before modernization period and red light enforcement period, respectively. The EB-adjusted crashes for Type I and Type II treated intersections for the after treatment period could be established by adjusting the before and after treatment period traffic volumes accordingly. The differences between EB-adjusted crashes and field observed crashes for Type I and Type II treated intersections for the after treatment period are the effect of signal modernization and combined effect of signal modernization and red light enforcement. The difference of the two effects thus represents the pure effect of red light enforcement. The effect of red light enforcement is further assessed by differentiating the Type I and Type II treated intersections according to number of through movement lanes and annual average daily traffic (AADT) range, respectively. For all target crashes including head-on, rear-end, angle, turning, sideswipe in the same direction, and sideswipe in the opposite direction combined, red light enforcement could on average reduce fatal crashes by 4 percent to 48 percent. Red light enforcement may increase injury crashes by 16 percent and decrease injury crashes by 8 percent. Red light enforcement may increase PDO crashes by one to 10 percent. The safety impacts of red light enforcement are separately assessed for different types of target crashes. For fatal crashes, red light enforcement may reduce fatal crashes by -1.4-1.2 percent for head-on crashes, 4-19 percent for rear-end crashes, 0.3-11 percent for angle crashes, -1.2-8 percent for turning crashes, 2-8.6 percent for sideswipe crashes in the same direction, and -0.4- 1.6 percent for sideswipe crashes in the opposite direction, respectively. Red light enforcement is generally ineffective in reducing PDO crashes. For all target crashes combined, the PDO crash increases could vary between 0.6 percent and 10.1 percent. For different types of target crashes, the highest PDO crash increases range from 0.2 percent for head-on crashes to 4.4 percent for rear-end crashes. Mixed results are obtained for red light enforcement on reducing injury crashes. For all target crashes combined, the injury crash could decrease as high as up to 8.2 percent and increase by approximately 16.3 percent. For different types of target crashes, the injury crashes may reduce by 4.7 percent for rear-end crashes to increase by 8 percent for rear-end crashes.
M.S. in Civil Engineering, July 2011
Show less

Title: Renewal of the Milwaukee Avenue viaduct
Creator: Anderson, S. C, Beach, W. E
Date: 2009, 1912
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/renewalofmilwauk00ande
Thesis (B.S.)--Armour Institute of Technology, 1912 B.S. in Civil Engineering, 1912

Title: The relative strengths of spiral reinforced concrete columns
Creator: Aeberly, John J., Pitts, Guy C.
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/relativestrength00aebe
Thesis (B.S.)--Armour Institute of Technology; Includes index Bibliography: leaf 41

repository.iit

Search the repository

Pages

Pages

Enabled Filters

Refine Results

Date

Subject

Creator

Rights