Post 3 in a Series of 4

 

Q&A Session with Anuj Dayama, who lives in Jaipur, India. Anuj works in the natural stone industry in India and is exploring advanced, “greener” building products and technology in hopes that he can introduce safer, cost-effective, and energy-efficient solutions to the Indian building community.

 

The Panelman Asks: What are the building code requirements for MgO SIPs and how do they compare with ICC codes?


Anuj Answers: Presently, most of the building codes in India are based on conventional construction techniques. Like aerated concrete, the new SIPs technology will have to find a place in the building codes eventually. But for that to happen, we need more local test reports. The international test reports, like ASTM and UL are also accepted in India.


I believe SIPs building – especially magnesium oxide board (MgO board) will really take off once basic testing certificates are also acquired from reputed local testing labs like CBRI Roorkee (http://www.cbri.res.in/). Their reports are well respected in our country and their costs are quite reasonable. Also, the SIPs technology can be used right away within the existing building codes for non-load-bearing applications and partitions which are a major part of new construction and remodeling. SIPs (and MgO board) technology could replace problem-prone gypsum board and fiberglass wool insulation that is currently being used. An awareness initiative and solid technical support from a SIPs company could help the Indian building community understand and use this already fully developed building technology in their projects.


Third Floor Addition in India

A Third Floor Addition Using Conventional Construction in India.

Anuj Says: “This picture I took demonstrates a great potential of SIPs use over existing flat concrete roof slabs. Where a third level is being added, the builders are using 9″ brick walls and a rebar roof. It is very cumbersome and time-consuming to build another level at this height with conventional heavy materials. You can see the shuttering work in progress. As for the roof, without SIPs use, this is going to be a very heavy structure which is going to absorb a lot of heat from all sides. A lighter, more energy-efficient building technology would help both the builder and the building owner.”
 








Anuj is interested in connecting with U.S. construction companies who want to be a part of the fast-growing alternative building movement in India. Contact me (Fred, aka the Panelman and I will get you in touch with Anuj! fmiller@totalpanelsource.com 

Post 2 in a Series of 4: Ideas for Overcoming Challenges in Conventional Indian Building

 

Q&A Session with Anuj Dayama, who lives in Jaipur, India. Anuj works in the natural stone industry in India and is exploring advanced, “greener” building products and technology in hopes that he can introduce safer, cost-effective, and energy-efficient solutions to the Indian building community.

 

The Panelman Asks: What do you believe are some of the solutions to overcoming the challenges that conventional building methods present in India?


Anuj Answers: The green building movement is really gaining momentum here in India. (Check out the list of upcoming tradeshows below for an idea of just how much industry buzz is going on!). Many of us in the construction industry are exploring lightweight materials that can still hold strong in an earthquake, are resistant to corrosion and water damage, and that require less labor and energy to implement.


I attended the Metal  & Steel Building Systems Expo this past June here in India, and was amazed at all of the new building concepts coming to market that address our challenges. Magnesium Oxide (MgO) board in a SIPs application are most compatible with steel structures due to their low weight and very high fire resistance. A good approach for developing the market for MgO boards and  SIPs construction technology here can be through derivation of initial cost difference compared to other building systems, energy savings, and affordability in this highly cost-sensitive market. Good sourcing of raw materials, a cost effective marketing approach and maximum near site assembly of panels to save on transportation can result in lower labor and manufacturing costs. A huge potential still remains looking at the small number & variety of alternate building products currently available compared to India’s market size, growing needs and our great appetite for better, greener building products and technology.


Typical residential highrise in Mumbai, India

Pictured is a typical high-rise residential structure in Mumbai. High-rise building has fueled India's interest in greener, altnernative techniques like MgO SIPs.


Like Fred, I believe that MgO SIPs are an ideal solution to the challenges I have outlined. MgO SIPs could deliver the same load bearing and security that our standard 9” thick exterior brick/ concrete envelope walls provide for compatible roof systems – with much less material. In a modular application, MgO SIPs would reduce labor costs as pre-fabricated components could be assembled on site. The water damage issue would also be solved as magnesium oxide is naturally resistant to corrosion and mold/mildew growth. I believe that MgO boards could replace gypsum, fiber cement, calcium silicate, plywood, and other problem-prone building materials here in India. Just like in the U.S., we need to work together to promote these advantages to the public – and the entire building community.


 

                                                                                                                                    


 

Green Building Organizations and Websites to Reference

www.igbc.in   An organization established by USGBC in India

www.grihaindia.org  This organization also certifies green buildings, like IGBC

www.bee-india.nic.in  Bureau oF Energy Efficiency that rates buildings according to energy use


Fall 2010 Green Building Events in India

  • Green Building Congress 2010, October 6-9 2010 at Chennai Trade Centre, Chennai
  • ZAK: Innovative, Lightweight, Faster, & Sustainable Building Construction Technology Expo Sep 30.  Oct. 3, Bandra Kurla Complex, Mumbai
  • ET ACETECH Chennai Trade Centre, November 26-18



One of the benefits of blogging is connecting with a community of other folks interested in the latest innovations in structural panels. We’re engaging in conversation, sharing ideas, and creating new partnerships – and that engagement is happening on a global scale.


Through this blog, I’ve met Anuj Dayama in India, who’s just as excited about MgO panel applications as I am (good to know I’m not the only one in the world all worked up about magnesium oxide!). Through our conversations, Anuj has shed light on the current construction situation in India – and how the latest panel and building technology could solve some of their challenges. Over the next two weeks, I’ll share Anuj’s answers to questions I asked. He’s also taken some great photos, which I’ll post. So without further adieu, here’s question #1…


Post 1 in a Series of 4: Challenges in Indian Construction

The Panelman Man Asks: We have our fair share of new construction challenges here in America, what sorts of challenges does India face in new construction?


Anuj Answers: Most of our commercial and residential new construction utilizes full density concrete-rebar for structural work and concrete blocks or red clay brick masonry with Portland plaster for walls. These materials require a lot of curing at various stages. Now, one of the main problems we face in India is a steadily growing potable water shortage in a lot of areas. This makes the curing process very difficult, expensive, and not very energy efficient. Curing results in pollution and wastage of our precious potable water, which is at dangerously low levels or already depleted in some regions. The increasing salt levels in our decreasing underground water table deteriorate concrete and plaster mixes while accelerating rebar rust.


Another challenge we face in conventional new construction is that concrete and brick yield little or no insulation, so we are forced to increase energy use to stay cool in summer. We have rising annual temperatures, which makes this an urgent issue. It is a challenge to stay cool in un-electrified rural areas as well as urban centers, where frequent power cuts reduce access to air conditioning.


concrete rebar flat roofs in India, SIPs would work better

Pictured are flat rebar-concrete roofs in India. These roofs account for maximum solar gains and very hot top-floor temperatures. A 4" SIPs roof structure would work much better...

To make matters worse, conventional construction creates the “heat island effect” by absorbing heat all day and then releasing it at night. Remember, in India we have nearly six months of extreme heat, and three peak months with average peak temperatures between 105 and 120 Fahrenheit. New construction is also very time consuming. Unfortunately that time is often wasted when an earthquake occurs as most conventional structures are not very earthquake resistant. We can never forget the 2001 Gujarat earthquake that took thousands of lives of people who were living in such structures.


One of the greatest challenges is the weight of concrete building; it requires so much energy to work with Portland concrete – both in transportation and labor. Until a decade ago, the other challenge was getting the building community to open up to new materials, and invest in testing (I know that Fred faces this issue, too.) Lately, thanks to government encouragement of alternative building methods, this has changed considerably. New materials like aerated concrete blocks, steel framing with boards, SIPs panels, and PU sandwich metal skin structures are steadily gaining popularity. Tomorrow, I’ll answer Fred’s question about ways we might overcome our challenges…

Construction is messy. And I’m not just talking about your basic home improvement project (although, is there anything worse than cleaning up drywall dust?). I’m talking about big construction. Each year, the U.S. construction industry generates 164,000 million tons of material waste and debris. This accounts for 30 percent of landfill content (EPA, 2004). And you thought plastic water bottles were a problem?


Now, I’m not blasting the construction industry. It’s a vibrant, necessary institution here in the U.S. But there are “greener” options those of us in the construction industry could consider – like modular construction. Modular construction involves subdividing a structural system into smaller parts. These parts can then be combined to create a customized final structure. It’s sort of a “plug and play” type of construction that requires less of a learning curve, less waste because the modular components are prefabricated, more consistent end structures, and labor savings for contractors. Modular building also allows for simplified expansion as additional modules can be seamlessly integrated into the end design.


Cleanroom constructed of modular panels.

A cleanroom constructed of modular panels.











As a custom structural panel laminator, I’ve supplied builders with prefabricated panels for modular structures. And I can say that these builders demand high-quality cores, surfaces, and laminations. Currently, the big users of our prefabricated panels for modular structures include: utility enclosures, communications buildings, recreation buildings, hurricane/tornado shelters, security booths, hazardous chemical storage, deployable kitchens, and portable classrooms.


 The Panelman wonders, why hasn’t modular building really taken off? It seems like a perfect tie-in for the current “green” mindset, it reduces energy, saves on labor, and provides a structurally sound end building. I’d like to hear what others out there have to say…


Want to read up on how modular building could fit into the U.S. construction industry? Check out this document by the Committee on Advancing Competitiveness and Productivity in Construction.

One of the things I like most about my job is the opportunity to share the latest advances in panel and lamination products with my customers (and with followers of the Panelman blog!). An innovation that still amazes me is germ-fighting lamination for cleanroom applications: The antimicrobial coating actually penetrates the cells of germs, preventing them from spreading or reproducing. If you’re interested in how this actually works, read on…


Obviously cleanroom walls need to be microbe-free, but did you know that the inside of the walls should be equally resistant to growth? Typical modular cleanroom wall construction consists of a painted metal skin (aluminum) bonded to both sides of a core material which can be either aluminum honeycomb or fluted polypropylene.


Fluted_Poly_for_Cleanroom_Wall

Fluted Polypropylene Core.


In modular cleanrooms, the wall system often consists of two panels of the same thickness, say ¼” overall thickness, separated by extrusions to make the wall structure. In a modular “negative pressure” clean room, air flows through a HEPA filter, usually mounted into a ceiling plenum. Air then moves in a downwards direction, throughout the room. Air ends up moving through vents at the base of the wall into the wall interior and upwards into the center of the wall back into the HEPA filter, completing the cycle.


Laminators of panels for cleanrooms have access to special germ-fighting coatings applied on the aluminum sheet or coils. The antimicrobial protection is integrated at every step during the manufacturing process to fill the interstitial spaces present in the coating’s molecular structure. These coatings are “baked” onto the aluminum coils for a thorough and durable finish. Once installed in a cleanroom, the antimicrobial additives migrate to the surface of the coating where any germs encountered are destroyed. Compliance testing is done according to:


  • ASTM G-21-96 (fungal)
  • AATCC Method 100 (bacterial)
  • ASTM D-5589-97 (algae)


If anyone out there is interested in obtaining even more detailed information (yes, there’s plenty more to share on the subject) about cleanroom panels, let me know. And if you’re installing cleanroom panels, be sure you take the anti-microbial properties of the panels’ interior into consideration!

In this post, The Panel Man is traveling back in time to the basements of yesteryear…


First stop, the “groovy” wood paneling popular in the 1960s. I remember helping my father attach unsightly 4’x8’ panels to concrete blocks (no insulation); five years later the wood rotted thanks to moisture. Some can make peace with wood paneling, I can’t!


Fast forward to the 1980’s: Everyone wanted a slick, finished look and went for sheet rock or gypsum board. Even when sandwiched between water resistant laminates, the core rots with any water exposure. I learned this the hard way when putting a basement shower in using Green Board gypsum panels in the bathroom. (Note: gypsum [di-hydrous calcium sulfate] is actually 21% water by weight!)


In the nineties, contractors thought vinyl wallpaper or fabric over fiberglass was pretty “rad.” Downsides were mold growing in the fiberglass, tough-to-clean surfaces, and lack of durability (anyone with kids understands this).


Why the trip back in time? To compare these basement paneling solutions to today’s better option: MgO (magnesium oxide) sheathing. I wrote about MgO in my first post as a viable SIPs component in building. Now, I’m on my MgO soapbox again because I think it’s a great option for basement paneling. Here’s why:

  • MgO is naturally mold- and water-resistant (it’s used in hurricane-prone areas)
  • It’s exceptionally strong – it’s even used for commercial countertops! It’s impact resistant, too, which matters to anyone who’s poked a hole in drywall
  • MgO board is safe and “green” – it contains no organic solvents, heavy metals, asbestos, oils or other toxic ingredient
  • Magnesium oxide boards are fire proof (can’t say the same for wood panels, that’s for sure)
  • As for aesthetic concerns, you can hang pictures on MgO panel without having to find studs and it’s easy to paint


If I were a contractor looking for an innovative basement material, I’d consider an MgO SIPs panel bonded on both sides to 2” EPS foam. With 2” insulation, you do the numbers on the “R” value!



Dow_XPS_Foam_Bonded_to_MgO_Board

EPS Foam + MgO = Winning Combination



 

I like everything I have seen with magnesium oxide boards for basement application. So why hasn’t it taken off? Owens Corning has their own “Basement Finishing System” and Champion has one as well; but neither use MgO board. I pulled up some other companies, mostly regional that have similar systems: All use vinyl-covered panels. I could only find one laminator on the East Coast that is actually promoting MgO panels as part of their basement finishing system. I forgot to mention that there are also companies actually laminating concrete panels for the same application…heaaavy!  Also, it must be murder on the CNC sawing equipment in the plant.


Anyways, I think eventually you will see MgO board SIPs everywhere. In the meantime, is anyone out there on the same wavelength with me? If we can embrace new materials and change our thought process, we won’t stay stuck in a 1960s wood-paneled basement (oh, the horror!).

With today’s focus on sustainability and thinking “green,” I was shocked to hear this statistic: There are estimated to be over 17 million Intermodal shipping containers in the world, and 700 thousand of these are sitting empty and abandoned in the U.S.


The primary reason for these extra containers is that America is now a net importing country (more containers coming in than going out). It doesn’t make financial sense to return an empty container to Southeast Asia. I got this information from a Bob Villa video where he interviews TAW, a company that converts these hurricane-tough steel containers into homes in Florida, as an alternative to wood or concrete block construction. As you can see in Bob’s video, the homes are not simply a single box with a few windows and a door: The containers are integrated into more traditional, structurally sound – and roomier – home designs. It’s exciting to think of unconventional uses for the thousands of empty containers. For example, maybe Habitat for Humanity could explore building with containers, creating low-cost but durable homes for those in need.


While I ‘m really intrigued by the residential application of intermodal containers, I’m not involved in that industry. But I am doing my part and thinking “green” by helping container companies find new uses for intermodal containers in commercial and military applications. In a commercial capacity, we supplied a company with fire-resistant structural panels for walls and ceilings. The end use was a simple shipping yard office. We provided 3/8″ plywood/FRP panels for this job, complete with PVC extrusions to connect the panels. Other panel options would include FRP or aluminum sheet bonded to XPS (Dow Foam) or EPS (Expanded Polystyrene) for container inside wall systems. Once a shipping container is altered for building use, it becomes an ISBU (Intermodal Steel Building Unit).


In another situation, the military wanted to incorporate shelving into the containers. Since weight was an issue, we sourced a light weight composite product where heavier steel was previously used. The composite provided just enough sturdiness without adding extra weight (and cost). The customer was very pleased that we went above and beyond, looking for a product that not only met – but exceed their specifications.



Converted_Container

Container converted into office space.



One of things I enjoy most about being in the panel and lamination industry is the opportunity to “think outside the box” for my customers by sourcing panel and lamination materials that they may not have considered. There are so many innovative panel and lamination materials out there, the challenge – and the opportunity – for me is finding customers who are willing to explore sometimes unconventional applications – like container conversion. However, I never budge on safety and coding requirements, no matter how “out there” a customer’s idea may be. I’m curious to know what your experience has been with an unconventional use for a material? And, the big question is, would you think outside the box and ever live inside a shipping container? :)

What do the Great Wall of China and ancient Roman bathhouses have in common? Both were constructed with cement containing MgO. MgO stands for Magnesium Oxide, a naturally occurring mineral compound, found in metamorphic rock deposits.


Today, MgO is used to construct some of the toughest SIPs on the market. But don’t confuse MgO panels with standard gypsum drywall – it’s in a class by itself. It’s ok if you know zero about MgO; it’s just now gaining popularity in the U.S. after approval for construction use in 2003. European builders have been using magnesium oxide panels for years in walls, floors, exterior sheathing, and more (they’re ahead on everything, aren’t they?). MgO is an excellent substrate for SIPs because it is:


  • Fire resistant (UL-approved, ASTM-tested)
  • Moisture, mold, and mildew resistant
  • Extraordinarily durable (the Great Wall is still standing strong)
  • “Green” and eco-friendly plus no asbestos or silica
  • Easy to work with: Go ahead and cut, drill, and affix to other surfaces (it’s ideal for lamination)
  • Available in many sizes, colors, and laminations


What’s not to love? New York and New Jersey have caught on; they’re heavy users of MgO SIPs. The Sunshine State has deemed it hurricane-tested and -approved (the impact ratings combined with mold and mildew resistant make MgO SIPs ideal for coastal buildings). Now, I won’t lie to you: Magnesium oxide panels are slightly more expensive than conventional SIPs. However, MgO panels boast a lower life cycle cost because of their durability and longevity (again, think of the Great Wall).


In my work with custom lamination, I’ve seen excellent results when bonding MgO board to EPS (expanded polystyrene) using approved structural adhesives. Many established SIP manufacturers I work with have run lamination testing for their customers, and the magnesium oxide board performs perfectly.


The Panel Man wants to know, what has your experience been with MgO panels? If you want to learn more about magnesium oxide SIPs, contact me. I can recommend a few established suppliers I have personal experience with.




Varying thickness of MgO board.

Varying thickness of MgO board.





Dow XPS Foam Core and 1/2 inch MgO Board

Here, 1/2 inch MgO board covers Dow XPS foam - it's the perfect pairing!



Did You Know?

MgO SIPS were heavily used in constructing most of the 2008 World Olympics buildings in Beijing which totaled over $160 billion!