Contributed by Eric D. Lussier
(Editor's Note: Before you start Part 2, please be sure you've read Part 1 here.
CUSHIONED SHEET VINYL
Vinyl, namely cushioned sheet vinyl or PVC, is one of today’s most popular synthetic surfaces for sports. Coming from a wide range of manufacturers in a variety of thicknesses, widths, colors and designs, the most common of these floors mimics the appearance of a traditional wood gym floor.
Premade in factories the world over, the vinyl is rolled up, packaged and shipped from the factory to a distribution house, the warehouse or a jobsite directly. The playing surface itself is typically pure vinyl and prefinished at the factory. Urethane prefinishes prevent the need to reapply annual finishes and help aid in cleanliness and maintenance of the floor. Any lines, lettering or logos are painted onto the surface of the rolled vinyl in the field.
Vinyl surfaces are very popular in elementary and middle schools, but also see installations in high schools, colleges, churches, YMCAs, daycare facilities and more. Built for sport usage of all types, cushioned sheet vinyl systems are heavily used for multipurpose areas. As water and liquids do not harm or, typically, stain the floor, it is common to see cafeteria and gymnasium hybrids — cafetoriums — receiving these types of floors.
Once prevalent, full-depth urethane surfaces have been mostly phased out and are now pad-and-pour or sandwich systems. Incorporating a recycled rubber pad that is adhered directly to the substrate or a slipsheet, the rubber has its pores sealed and is then coated with a 2 mm or 3 mm urethane lift. The lift is then coated with a color layer, offering one of the most popular synthetic surfaces on the market, which is also completely seamless.
Ideal for multipurpose usage, the overall resiliency of the rubber pad is more suited for heavy loads over the closed-cell foam of a cushioned sheet vinyl. While 4 mm, 7 mm and 9 mm are the most prevalent rubber pad thicknesses on the market, almost any thickness is available.
With all components manufactured in the factory, the pore sealer, urethane lift and painted wear layer are shipped to the job in pails in two- or three-part kits. Dozens of pails are mixed onsite, making conditions such as heat and relative humidity in the climate-controlled space to be of the utmost importance. Products are hand troweled or hand rolled upon the surface, and the final painted wear layer can be as thin as a piece of paper.
This painted wear layer can wear through in high-traffic areas, and it is typical for the floor to receive a new applied surface periodically, perhaps anywhere from five to 15 years depending on usage.
Contributed by Jon Lattin
Editor's note: If you haven't read the first post, 'Let's Build a Future for Women in AEC', please read it here.
Close to one month after the inaugural Let’s Build Camp began, we have taken a deep breath and are now reflecting on the outcomes of our week. Did we accomplish what we set out to do?
Let’s Build Construction Camp for Girls started as a vision to introduce young girls to the AEC industry. It was designed to allow them to explore the construction trades, architecture, engineering, and construction product manufacturing through hands on experiences and field trips. In this mission, the camp was an overwhelming success. Twenty young ladies of varying experiences and capabilities learned key construction principles as they built and finished wall sections. Through this hands on approach, they experienced carpentry, electrical, HVAC, plumbing, masonry, and painting while being exposed to green building, the principles of cement and metal roof manufacturing, and design with BIM. To see pictures of our camp, please visit www.letsbuildcamp.com.
In retrospect though, the camp was so much more than a construction camp, it became a camp of life skills training. Problem solving, managing team dynamics, respecting others, listening to instruction and executing tasks based on them are all skills that naturally evolved during the course of the weeklong camp. These are all attributes that we as adults deal with on a daily basis, both in work and at home. The girls experienced these realities of life through the course of building their walls in small teams of four.
After kicking off camp with an ice breaker activity and a factory tour, the girls were grouped by skill level and then teams were created by pulling a girl from each level. This attempt at equalizing the teams worked perfectly as the girls with more experience and skills became team mentors to the girls with less experience. Seizing this opportunity to build leaders, we were able to harness this informal mentorship to allow the girls a chance to lead the teams, resulting in confidence building for both the “leader” and the “students”. A shining moment for each team came as they turned on their lights for the first time, with smiles beaming from ear to ear as they flipped the switch and saw the results of their efforts working successfully.
Another gratifying time was the last day when the teams painted their walls. We expected the girls to paint the walls with a single color and to be finished with their work. In reality though, this was the first opportunity that they could be free to express themselves, since most of the work up to that point was defined for them by the construction documents and instruction. The teams showed creativity and style as they all added their own personal flair to their creations, resulting in five completely different wall sections.
Contributed by Elias Saltz
As a consulting specifier, my clients come for my expertise. To bolster my knowledge, I frequently find myself in conversations with product reps, talking about the nitty-gritty technical aspects of their products. These conversations delve into a far deeper level of detail than I would previously get when I was a ‘normal’ design architect and project manager. Over the course of those conversations, I am occasionally surprised that things I thought I knew a lot about were based on misconceptions. In fact, even things that I considered “common knowledge” have been shown to be wrong, or at least over-simplifications. Armed with accurate information, I can pass correct technical advice on to my clients, hopefully dispelling those misconceptions one person at a time, one project at a time.
Misconceptions can be found across the spectrum, in every product category and in every MasterFormat number. I thought it would be fun and enlightening to ask my go-to reps in a wide variety of product categories to tell me the biggest and most common misconceptions they hear as they work with designers and architects, and present their responses here. In each post, I’ll relate my discussion with reps in one category or one MasterFormat header.
The reps I chose to approach for this post, Kurt Wenzel from YKK AP and John Stelter from EFCO Corporation, are both active and involved CSI members that I’ve come to know well over my career. I consider them my trusted advisors when it comes to questions about their companies’ lines of fenestration products. I’m not promoting their products over their competitors’ - it’s far more about the individual reps than the companies that they work for.
08 43 13 - Aluminum-Framed Storefronts
Introduction to Storefronts:
Webster defines storefront as “The front side of store or store building facing a street.” The use of storefront products dates all the way back to the 1930’s, and the systems of today have changed very little from the original design. The design intent of the storefront sash and glass originally was to allow for shopkeepers to display their wares to pedestrians who would pass by their stores. They aimed to entice them to stop and look with the hopes of attracting them inside.
Aluminum-framed storefronts are basically extrusions of aluminum that are fabricated and assembled to allow for glass (or other infills) to be installed into the system, providing a see-through weather barrier between the inside and outside of the building. The extrusions are normally 1-3/4 to 2 inches wide by 4 to 4½ inches deep; systems 6 inches deep are available from some manufacturers. Systems intended for use on buildings’ exteriors usually are fabricated with a thermal break lined up with the center of glass. The thermal break reduces heat energy loss through the system, preserving energy and minimizing condensation. That thermal break is omitted when the storefront is located on the interior, such as in a vestibule.
With storefront systems, the entire extrusion is structural, there are no non-structural pressure caps or decorative covers like there are in curtain wall systems. Multiple configurations are available, and all are conceptually equivalent, other than the plane of the glass. Configurations include structural glazed, front, center, and rear glazed systems.
CSI’s Specifier Practice Group recently held a webinar session discussing how storefronts, windows, curtain walls and window walls are made and how they’re distinguished from one another in performance and in their use. The video of that webinar is available here.
Contributed by David Stutzman
Design and construction projects require an enormous number of participants to complete each facility. The basic teams include owners, architects, contractors, and suppliers. The lines of communication are well defined, especially after the construction contract is executed. But how are the teams collaborating before the contract is signed?
In no particular order…
The relationship between the owner and architect is well defined by the agreement for the design services. According to AIA agreement Document B101, the owner and architect share information at each design phase. The owner provides the project program and budget. The architect reviews the information and advises the owner if there are any concerns before the design is started. They discuss alternatives for the design approach and for the construction project delivery method. The communication is nearly continuous as the design is refined and solidified while progressing to the completion of the construction documents.
When the owner retains a contractor or construction manager for preconstruction services, the architect communicates with the contractor about cost, schedule, and constructability. When the architect and contractor are collaborating during design phases, the owner can have greater confidence that the ultimate design will meet the owner’s budget and schedule.
Product representatives, whether manufacturer’s direct employees or independent representatives, will meet with the architect team, including the specifier, to advise about the use of specific products for particular applications. The discussion is particularly valuable to resolve unusual conditions, to verify the product performance will meet the owner’s project requirements, and to understand the product cost implications created by the design decisions.
The specifier typically begins by challenging the architect – asking many questions to determine the design intent and confirm project systems, assemblies, products, and materials. The Q&A process becomes a dialog to ensure all aspects of the project will be specified correctly so the owner realizes the quality expected in the completed facility.
The specifier may recommend alternative systems and products that offer advantages to the project. And the specifier will connect the architect to suppliers, subcontractors, and other resources needed to solve particular design problems. The architect and specifier discuss alternatives to determine the optimal design solutions for each application.
Subcontractors provide invaluable real-world experience, with both product and installation. They can advise architects and specifiers about the practicality of construction details, installation sequencing, system costs, and product availability through local distribution channels. The owner may engage subcontractors during design to provide design assist services to develop project specific details and shop drawings before design is complete.
Unlike suppliers who typically furnish product prices only, subcontractors can provide installed system costs that reflect the expected project complexity.
Availability can be a significant issue, especially for short duration projects and just-in-time manufacturing. When architects select the perfect product that is not available in time, project completion may be delayed.
Traditionally, the subcontractor is rarely given an opportunity to contribute during the design process, except as part of a design assist process. The architect team, including specifiers, tends to rely on suppliers for product and system information. Suppliers are rarely responsible for complete systems, while subcontractors always are responsible for complete systems. Be sure to include subcontractors in the process.
Each team and every team member has a contribution to make. The best design responses will take advantage of experience and expertise that is readily available. Together, through active collaboration before the construction contract is signed, the teams can help ensure the owner’s project requirements will be met when construction is complete.
(Editor's note: This blog post, along with numerous others, appeared originally on the Conspectus website. You can view an archive of Conspectus' posts here.)
Contributed by Elias Saltz
As a consulting specifier, my clients come to me for my expertise, and to bolster my knowledge I frequently find myself in conversations with product reps, talking about the nitty-gritty technical aspects of their products. These conversations delve into a far deeper level of detail than I would previously get when I was a ‘normal’ design architect and project manager. Over the course of those conversations, I am occasionally surprised that things I thought I knew a lot about were based on misconceptions. In fact, even things that I considered “common knowledge” have been shown to be wrong, or at least over-simplifications. Armed with accurate information, I can pass correct technical advice on to my clients, hopefully dispelling those misconceptions one person at a time, one project at a time.
Which leads me to the idea for this series of posts. Misconceptions can be found across the spectrum, in every product category and in every MasterFormat number. I thought it would be fun and enlightening to ask my go-to reps in a wide variety of product categories to tell me the biggest and most common misconceptions they hear as they work with designers and architects, and present their responses here. In each post I’ll relate my discussion with reps in one category or one MasterFormat header. So without any further ado, today’s Misconceptions.
The reps I chose to approach for this post, Andy Vegter from USG and Thad Goodman from National Gypsum, are both active and involved CSI members that I’ve come to know well over my career. I consider them my trusted advisors when it comes to questions about their companies’ lines of gypsum-based products. I’m not promoting their products over their competitors’ - it’s far more about the individual reps than the companies that they work for.
Without any further ado, today’s Misconceptions.
09 29 00 - Gypsum Board
I asked Andy and Thad this question:
“When you think about the questions and comments you hear from design professionals across all levels of experience, what misconceptions about gypsum products do you find that you most commonly have to dispel?”
First, this brief introduction - What is gypsum/gypsum board, anyway?”
Gypsum is a natural mineral, chemically made up of calcium and sulfur bound to oxygen and water. It is found naturally in sedimentary rock formations, with some of the world’s largest natural reserves in North America. A synthetic version, which is a byproduct of coal burning electric power plants, is chemically identical to natural gypsum. Some gypsum board manufacturing plants are fed with mostly synthetic gypsums and others are built over a mine where the gypsum is coming out of the ground. Synthetic gypsum is considered a recycled material by sustainability rating systems, so projects seeking certification can specify that gypsum panels be made up of 90% recycled content. It’s important to remember that not all products are available from plants that use synthetic gypsum.
Gypsum board is manufactured when gypsum is mixed with water and additives to form a slurry which is then fed between continuous layers of paper or another type of facer. Through a chemical process, the slurry hardens to its original rock state, and the facer becomes bonded to the gypsum core. The boards are then cut to size and dried.
What follows are some of the most frequent misconceptions and misunderstandings that the reps related, followed by the correct information.
Let's Fix Construction is an avenue to offer creative solutions, separate myths from facts and erase misconceptions about the architecture, engineering and construction (AEC) industry.
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