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For over 20 years OSHA has been working on getting a Construction Standard for Confined Spaces into the workplace and it has finally arrived. This paper will give a brief background on the standard development as well as go over the new standard and definition of what is a confined space.
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On November 4, 1993, OSHA’s Lead in Construction Standard became the law of the land. Initially, (and to some extent today) the small residential contractor community reacted with complete outrage due to marketability fears, many claiming that they would simply stop working on “old houses.” Industrial contractors along with the larger residential and commercial contractors often at first ignored or complied in a lackadaisical manner with these laws, continuing to work “as it’s always been done.”
Model building codes and standards have begun adopting new energy efficiency requirements for building envelopes, including more quantifiable assessment of the air permeance characteristics of the materials and assemblies used in the building envelope. This research effort was initiated to understand and quantify the air leakage mechanisms of single wythe concrete masonry construction, which is commonly used in exterior building envelopes.
Construction labor experts are becoming overwhelmingly concerned that we will not have the workforce to maintain, let alone rebuild, our country’s infrastructure. Projections for Project Management and Skilled Labor tell us the issue is worsening by the day with no solution on the horizon. Confidence in employee and employer accountability is at an all time low. The painting and coating industry is both safety sensitive and labor intensive. This risk is unique, in that it touches every aspect of your company, starting with employee safety.
Construction drying and climate control for major projects including Mission Critical Campuses (Data Centers), Healthcare/Institutional Facilities, and Major Construction/Retrofit Opportunities have become a necessity and not a luxury. Quick turnaround and timely completion have proven to be huge economic factors to facility owners, general contractors, and specialized subcontractors alike. Mission Critical Campus and Healthcare/Institutional Facility Construction specifically are on the rise, which is creating additional challenges for the construction teams.
This paper is a case study on a 100% solids epoxy penetrating sealer being used as a tie coat between a tightly adhered latex acrylic and aliphatic polyurethane.
Lay-up is a process that provides internal protection on equipment (pipeline, piping, heat exchanger...etc.) and controls internal corrosion by ensuring water and oxygen-free environments. Corrosion may occur and be accelerated by water contact after hydrostatic testing and even a small amount of stagnant water and oxygen ingress will cause bacteria to grow in water which may result in loss of thickness due to high concentration of sulfate-reducing bacteria (SRB) and accelerate internal corrosion in equipment due to Microbiological Induced Corrosion (MIC). Lay-up helps to greatly reduce these risks of internal corrosion and provide assurance of design life. The objective of this study is to identify constructability challenges faced during construction and carry out a lay-up in a cross country pipeline in gaseous services. Six challenges are discussed and explored in the study including: the long duration from water fill to final lay-up, pipeline segments are used as water reservoirs, intermediate/segment lay-up, failure to maintain lay-up, indefinite lay-up periods, and rainwater. A case scenario is used to demonstrate the extent of these challenges and issues. It is hoped that this study will help avoid and minimize these constructability challenges in future cross country gas pipelines projects.
Contractors often agree to deliver a project on a certain schedule. Then, once the work begins, the project suffers significant impacts, oftentimes through no fault of either the General Contractor or the Subcontractors, and then they do not have the tools in place to properly communicate the impacts, recover the losses and manage success.
In 2010 the Tucson Water Department began to implement the Tucson Water Reservoir and Tank Program. The purpose of the program was to evaluate and repair approximately 70 concrete and steel potable water storage facilities.
The construction industry has struggled to fully embrace the philosophy of defect prevention rather than detection as a quality objective. Quality is more often discussed in sales presentations and marketing literature than in strategic plans or board meetings. This paper explores quality principles and methodologies employed in the manufacturing industry over the past twenty years that have resulted in measurable performance improvements yet are not adopted by the construction industry.
The selection and use of protective coatings. Corrosion prevention through the use of protective coatings. Chemical terms have been reduced. Activities of industrial and commercial painting projects. 3rd edition 2016 NACE E-Book