Abstracts – Browse Results
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Abdelhamid, T S (1999) Measuring and evaluating physiological demands of construction work, Unpublished PhD Thesis, , University of Michigan.
Al-Hussayen, M A (1980) Building problems in Saudi Arabia: The need for building research, and the development of building research approaches, Unpublished PhD Thesis, , University of Michigan.
Awwad, R E (2010) Neutral and risk-sensitive models for competitive bidding methods based on average and order statistics, Unpublished PhD Thesis, , University of Michigan.
Behzadan, A H (2008) Arviscope: Georeferenced visualization of dynamic construction processes in three-dimensional outdoor augmented reality, Unpublished PhD Thesis, , University of Michigan.
Chen, T Y-J (2019) Advancing quantitative risk analysis for critical water infrastructure, Unpublished PhD Thesis, , University of Michigan.
Choi, B (2018) The role of socio-cognitive process in construction workers' safety behaviors, Unpublished PhD Thesis, , University of Michigan.
Chung, K H Y (2022) Data fusion, hedonic pricing, and blockchains: Lowering investment barriers for sustainable infrastructure, Unpublished PhD Thesis, , University of Michigan.
Colberg, M R (1950) Federal control of construction following World War II, Unpublished PhD Thesis, , University of Michigan.
Dias, A, Jr. (1994) A managerial and financial study on the involvement of private sector companies in the development, construction, operation, and ownership of infrastructure projects, Unpublished PhD Thesis, , University of Michigan.
Dzeng, R-J (1995) CasePlan: a case-based planner and scheduler for construction using product modeling, Unpublished PhD Thesis, Department of Civil and Environmental Engineering, University of Michigan.
Han, S-H (2004) A working prototype of distributed collaborative architectural design system, Unpublished PhD Thesis, , University of Michigan.
Hasell, M J (1983) Gaming simulation: A communication tool for architects and designers, Unpublished PhD Thesis, , University of Michigan.
Henn, R L (2013) Moving targets: Managing interinstitutional relationships in green building design and construction, Unpublished PhD Thesis, , University of Michigan.
Howe, A S (1998) A new paradigm for life-cycle management of kit-of-parts building systems, Unpublished PhD Thesis, , University of Michigan.
Ismail, I A (2014) Financial cash flow determinants of company failure in the construction industry, Unpublished PhD Thesis, , University of Michigan.
Jebelli, H (2019) Wearable biosensors to understand construction workers' mental and physical stress, Unpublished PhD Thesis, , University of Michigan.
Kabo, F W (2006) Low-cost housing design and provision: A case study of Kenya, Unpublished PhD Thesis, , University of Michigan.
Kalampakorn, S (2000) Stages of construction workers' use of hearing protection, Unpublished PhD Thesis, , University of Michigan.
Khoury, H M (2009) Context-aware information access and retrieval for rapid on-site decision making in construction, inspection and maintenance of constructed facilities, Unpublished PhD Thesis, , University of Michigan.
Kirk, S J (1992) Improved design decision-making using small group value engineering gaming/simulation, Unpublished PhD Thesis, , University of Michigan.
Lee, H-S (1992) Automated interactive cost estimating system for reinforced concrete building structures, Unpublished PhD Thesis, , University of Michigan.
Leu, S-S (1992) Object-oriented representation model of construction technology information, Unpublished PhD Thesis, , University of Michigan.
Liang, C-J (2021) Affecting fundamental transformation in future construction work through replication of the master-apprentice learning model in human-robot worker teams, Unpublished PhD Thesis, , University of Michigan.
Liu, M (2019) Video-based human motion capture and force estimation for comprehensive on-site ergonomic risk assessment, Unpublished PhD Thesis, , University of Michigan.
Lundeen, K M (2019) Autonomous scene understanding, motion planning, and task execution for geometrically adaptive robotized construction work, Unpublished PhD Thesis, , University of Michigan.
Martin, S D (1981) Building contracts in classical Roman law, Unpublished PhD Thesis, , University of Michigan.
Mason, B (2023) Advancing autonomous green stormwater infrastructure, Unpublished PhD Thesis, , University of Michigan.
McIntosh, J F (1984) The application of the relational data model to computer-aided building design, Unpublished PhD Thesis, , University of Michigan.
Odeh, A M (1992) CIPROS: Knowledge-based construction integrated project and process planning simulation system, Unpublished PhD Thesis, , University of Michigan.
Paunikar, A (1983) Performance constraints of housing prefabricators in India: 3 case studies, Unpublished PhD Thesis, , University of Michigan.
Rohlman, R E (1978) Construction management: A comparison of management services, time, cost and supervision performance factors on public school projects in Michigan, Unpublished PhD Thesis, , University of Michigan.
Sherif, A H (1988) The choice of construction technology in developing countries: A socially conscious economic assessment approach, Unpublished PhD Thesis, , University of Michigan.
Srisuwanrat, C (2009) The sequence step algorithm: A simulation-based scheduling algorithm for repetitive projects with probabilistic activity durations, Unpublished PhD Thesis, , University of Michigan.
Stino, R M (1999) Effect of spatial variables on bricklaying productivity and ergonomics, Unpublished PhD Thesis, , University of Michigan.
- Type: Thesis
- Keywords: bricklaying; inspection; ergonomics; productivity; bricklayer; mason
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/304540453
- Abstract:
This research demonstrates that spatial variables in the bricklaying environment can have significant impact on masons' productivity and ergonomics. Spatial variables considered were distance above the work surface on which the mason stands and distance to either side of the brick and mortar supply. Seventy-four masons completed a bricklaying ergonomic questionnaire that asked masons to indicate their perceived discomfort, perceived speed, and material layout preferences for different vertical locations in a brick wall. Ten bricklayers constructed ten brick veneers, each 13’-8” wide and as high as they could physically reach, which varied from 5’-7” to 6’-8”. Time spent installing all bricks was recorded and quality of completed veneers was measured at different vertical and horizontal locations in the brick veneer. The questionnaire showed that masons' perceived discomfort and likelihood of developing musculoskeletal injuries in the back and upper extremities were greatest when bricklaying was done above shoulder height and below knee height. Masons generally preferred a material supply at wrist/hand height throughout construction of an entire wall. Analysis of vertical distance showed that masons had the highest productivity about 1’-7” to 4’-0” above the working surface. Productivity decreased significantly above and below the 1’-7” to 4’-0” range. In comparing the upper and lower extremes, masons were more productive working down low than working up high. Analysis of horizontal distance showed masons' productivity was not as sensitive to horizontal distance as vertical distance. Results showed that the central section of the veneers, near the material supply, had the highest productivity. Productivity was lower in the left and right extremes of the veneers, which ranged from 3’-8” to 6’-4” from the center of the material supply. Inspection of quality of constructed walls showed that deviations in head joint and bed joint thickness, horizontal and vertical levelness and alignment of bricks, and rotation of bricks were greatest in the upper-most and lower-most courses in the veneers. Overall results showed that avoiding or minimizing bricklaying in the upper and lower extremes of walls reduces masons' levels of perceived discomfort and musculoskeletal problems, increases masons' satisfaction by accommodating their preferences, increases masons' productivity, and increases masons' quality of work.
Sugrue, D P (2021) Alternative financing for harbor infrastructure using big data analytics in the great lakes waterway, Unpublished PhD Thesis, , University of Michigan.
Taemthong, W (2002) Accounting for the impact of learning and scheduled overtime: Developing dynamic models to estimate and control labor time and labor cost, Unpublished PhD Thesis, , University of Michigan.
Tharachai, T (2004) Multiple project resource scheduling for construction, Unpublished PhD Thesis, , University of Michigan.
Thomas, A (2017) Modeling occupant behavior, systems life cycle performance, and energy consumption nexus in buildings using multi-method distributed simulation, Unpublished PhD Thesis, , University of Michigan.
Xiao, Y (2017) Three-dimensional reconstruction and modeling using low-precision vision sensors for automation and robotics applications in construction, Unpublished PhD Thesis, , University of Michigan.
Zouein, P P (1995) MoveSchedule: a planning tool for scheduling space use on construction sites, Unpublished PhD Thesis, Department of Civil and Environmental Engineering, University of Michigan.