- Producer08/10/2017Quick Buzz Becoming the Producer Post: Concrete from Wood!According to the new changes on the beBee platform, a short buzz or a Quick Buzz, as named, will be distributed only to followers and won’t be shared in any hive. If you want to share a link or a picture into a specific hive, you need to write...
Comments08/10/2017 #21 Lada 🏡 Prkic#19 #20 Phil, you and I both are the builders. You build ships and I build buildings. So, you are more than qualified to ask questions. :-)
Heavy materials like reinforced concrete require higher installation and transportation costs than lighter construction materials.
As for this new type of concrete, I've read the paper mentioned at the end of the article explaining the use of wood-cement compounds (WCC) in structural elements.
Combining WCC with timber for load-bearing systems creates a HYBRID structure (TWCC) that is strong as a structural element, merging advantages of each material (fire resistance, thermal and acoustic insulation).
Because of low stiffness of WCC, the material is placed in the compressive layer of a hybrid slab to increase the stiffness of the load-bearing element.
As said in the article, the existing level of knowledge required for widespread application of this hybrid material is still too limited. It will take several years before implementation.
You're right this is an improve concrete, but I see it as a large improvement towards "greener" building materials.
I'm sure we'll see many more improvements in the years to come.
Thank you for commenting on the subject of the post.
It seems you'll be the only one. :-)08/10/2017 #20 Phil FriedmanOkay,@Lada 🏡 Prkic here is my comment on the post the link to which you provided. Please forgive my naivete, for I am only a simple-minded boatbuilder, and neither a professional engineer as you are, nor an architect like @Claire L Cardwelll -- but I see this product as an engineering solution in search of a problem, and not a very good solution at that.
1) The weight of structural members is not generally a concern in stationary structures, certainly not to the extent that it is a concern in the engineering of self-propelled mobile structures such as ships and yachts. In other words, we don't generally care what a bridge weighs, as long as it carries the loads and doesn't fall down. So why seek to reduce the weight of concrete members at what will have to be a sacrifice in compressive strength? (cont Pt. II)08/10/2017 #19 Phil Friedman@Lada 🏡 Prkic - Pt. II
2) I note that the article refers to the use of wood "sawdust" in replacement of stone or I'd guess sand aggregate. If accurate, there will not be any gains in terms of tensile or flexural strength. Where I am based in South Florida, driveway and parking lot pavers have been using pre-molded stones made of Portland cement concrete admixed with glass fiber aggregate (chopped strand fiberglass). The paver stones are said to exhibit a major increase in tensile and bending strength, as well as being lighter and easier to handle and place. The key here is those strong fibres set into the cement matrix add strength, as might wood fibers. But wood particles, even chips won't.
3) The move to "improve" concrete might be self-defeating on a global basis. I recently read about research that shows the carbon footprint contributed by plants which manufacture Portland cement is huge and among the worst worldwide. So my contention is that we'd be much better off learning to return to more wooden structures (albeit it using modern engineering and techniques adapted from the science of strong materials). Interesting and thought-provoking post. Thanks and cheers!08/10/2017 #18 Lada 🏡 Prkic#11 Dear Phil, you don't need to wait to see how many people will be interested in talking about the engineering aspects of the wood-concrete materials. The answer is probably, none (I still hope I'm wrong). I realized that fact as soon as I came to beBee, despite the apparently large number of users coming from the construction industry.
Final confirmation of this "thesis" is my last Producer, Engineering Talks No. 1. Even people I mentioned in the post, who are the authors of some articles about construction-related topics, never joined the discussion here on beBee but reached to me on LinkedIn.
I think it's the same situation with the Milos Djukic's posts on material science topics.
The same is with you when you publish articles about the marine industry.
But as in life I hardly give up. I still hope that at least one person close to my profession read this. :-) Hope dies last.08/10/2017 #11 Phil FriedmanLada, before programs that actually counted words, in publishing, we used to assume that the average character count for a "word" was five. If I work on this older standard assumption, your word count on this piece comes to about 336 -- or 168% of the prescribed minimum (which BTW is not new, but only now being enforced). Personally, I agree with @Javier 🐝 beBee that "naked links" (no attached commentary) have no place in the Producer stream, and to my mind allowing them to be posted as Quick Buzzes to one's followers makes the most sense. PS - I will post shortly an engineering question related to this product and will look forward to your always erudite answer. It will then be interesting to see if anyone else is interested in talking about the engineering aspects of this -- as opposed to the peripheral issue of beBeeposting rules. Cheers!08/10/2017 #9 Lada 🏡 Prkic#4 Glad to see you, Linda. This post is the first one of the so-called "converted" articles since the short form contents (short buzzes) can't be distributed to the hives anymore. For example, your buzz about the lecterns and trade show stands now will be distributed only to your followers. Thanks for commenting. Have a good weekend too.08/10/2017 #8 Lada 🏡 Prkic#2 #3 Thank you for the clapping hands and sharing. :-) I'll give this new form of content a try. It requires much more time than before to share articles in the specific hives. But since it is a new rule we must accept that to maintain existing groups. To build the construction community around industry-oriented hives is already a hard job on beBee. Hope this will work. :-)08/10/2017 #4 Linda AdamsI wasn't aware of the changes at BeBee, Lada, so thank you for sharing. It makes sense not to put a buzz in any hives and encourages articles. I liked yours, well done on your first of hopefully many. I'm going to rename my own hives as they aren't attracting any bees, but I love writing articles. Have a good weekend. Regards, Linda
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- Producer01/08/2017Small Solutions... Big Results (No. 1)THE FIRST IN A SERIES OF RETROSPECTIVES THAT LOOK BACK AT THREE DECADES OF FINDING VALUE-ENGINEERED SOLUTIONS... Preface: This article begins a series that looks back at various value-engineered solutions to problems encountered by the author in...
Comments03/08/2017 #37 Phil Friedman#30 I agree entirely, Milos, Science and Engineering aren't always just about the "big" stuff, but just as often about understanding and improving the "little" things in life -- like, as you point out, how deep-cycling cell phone batteries reduces their working life.03/08/2017 #36 Phil Friedman#34 Peter> "I'm trying to establish that the term "value engineering" is not a universally understood term.."
Ah, Peter, if you had only said that at the beginning of your first comment, my eyes would not be glazing over with this exchange.
To be clear, I agree with you that the term may not have a single universally-accepted definition. But then how many such terms do?
I believe it sufficient that I used the term in one of its commonly accepted meanings. I am sorry if you mistook what the piece might be about. But it seems to me that the title clearly indicated the article was about "small solutions". Moreover, the lead image reinforces that point, especially in the simulated drawing title box, where it actually describes the object that will be the focus of attention. And if those were not enough to warn you off potential ennui, the first highlighted statement left little doubt.
"Engineering isn't always simply about the design of a product but just as often about the planning and execution of the building of that product..."
Cheers!03/08/2017 #35 Anonymous#34
1. Meaning of “value engineering” in the English Dictionary:
"The process of reducing the cost of producing a product without reducing its quality or how effective it is:
Substantial value engineering had to be done to control costs." (http://dictionary.cambridge.org/dictionary/english/value-engineering)
2. "Value Engineering (VE) is concerned with new products. It is applied during product development. The focus is on reducing costs, improving function or both, by way of teamwork-based product evaluation and analysis. This takes place before any capital is invested in tooling, plant or equipment." - from article: Value Analysis (VA) and Value Engineering (VE): Definitions and Benefits on advice-manufacturing.com (http://www.advice-manufacturing.com/Value-Analysis.html)
3. "Value Engineering is a systematic analysis method which, when properly applied to a product, process, or service, will reduce costs and increase profit margins. It involves creativity and challenges existing procedures, revealing successful new strategies. It is also known as Value Analysis. The results and techniques are the same." - from McGill University Value Engineering Workshop
4. "Value engineering can be defined as an organized effort directed at analyzing designed building features, systems, equipment, and material selections for the purpose of achieving essential functions at the lowest life cycle cost consistent with required performance, quality, reliability, and safety." - from the U.S. General Services Administration (GSA) website
(https://www.gsa.gov/portal/category/21589)03/08/2017 #34 Peter Altschuler#29 No, @Phil Friedman, I'm not trying to build a straw man. I'm trying to establish that the term "value engineering" is not a universally understood term.
Rather than being mundane, it's particularly domain-specific. So, for those of us who are not in engineering or government or nautical construction, we're far more likely to impose our own definition than yours. In such a situation, it helps to clarify the intent.
Your article is technical, and it requires a certain level of knowledge and comprehension. I don't have that and, if I'd known at the outset that it "may be of interest to engineers and tradesman who deal regularly with construction- and manufacturing-related problems and issues," I'd have focused my attentions elsewhere.03/08/2017 #30 Anonymous@Phil Friedman please continue with this series. It's gonna work.
"The practical side of science and engineering" - down to earth science - a few simple strategies.
Associate Professor of Materials Science and Engineering and Director of the Monash Energy Materials & Systems Institute (MEMSI), Monash University, Australia Jacek Jasieniak, reveals a few simple strategies to extend your phone's battery life by more than 40 per cent. Monash is one of Australia's leading universities and ranks among the world's top 100.
Article: "Explainer: how to extend your phone’s battery life" (https://theconversation.com/explainer-how-to-extend-your-phones-battery-life-80958)03/08/2017 #29 Phil Friedman#24 No, Peter, you're not just saying. Your seeking to build a straw man argument by assuming a definition of "value-engineering" that serves your own purposes.
To wit, a commonly accepted definition of value engineering is, "Value engineering (VE) is a systematic method to improve the "value" of goods or products and services by using an examination of function. Value, as defined, is the ratio of function to cost."
The particular example I chose here illustrates the performance of a particular operation necessary during the construction of a high-tech military vessel, under a NAVSEA government contract, at a cost far below what was expected or budgeted. Sorry, if that strikes you as too mundane to be of interest, but frankly that is the reaction of a writer who talks about such things, not that of anyone who is a shop-floor veteran, engineer or otherwise. In this context, I am happy to ...
Cheers!03/08/2017 #25 Anonymous#24 Just guess Peter, I could write an article on how to fight against hydrogen embrittlement and the environmentally-enhanced cracking of military equipment, including naval ships and fighter. This seems like a very important technological breakthrough, but it is not. Social media is not the ground for such "so-impressive value-engineered solution". Finally, an article like this one by Phil has great practical value and certainly represents a practical and useful example of a successful engineering in a specific field. Science and engineering are not only in national laboratories and large research centers. The work of engineers is also practical. Just my 2 cents.03/08/2017 #24 Peter AltschulerNah, @Phil Friedman, that ain't gonna work.
I've written about grazillions of "value-engineered solutions" that have nothing to do with any actual engineering. It's one of those, well... marketing phrases intended to make something seem oh-so-impressive.
It could be about improving operations with new technology that is engineered to simplify interactions, accelerate transactions, and improve productivity because, yes, it's value is engineered-in. Or about a ship whose hull design is so advanced that it slips through water with less drag than a dolphin and, as a result, uses less fuel, increases speed, and reduces onboard manhours, all due to the fact that it's value-engineered.
I'm just sayin'.03/08/2017 #23 Phil Friedman#8 Thanks, @Todd Jones, for reading and the kind words. Plugs for the intake holes were placed in the female tool by working from the CAD drawings. A male plug placed in a female tool leaves a hole in the molding when it is removed from the tool. Same for the waterjet drives, which were inserted through holes in the transom. We built special purpose alignment jigs for the intake grates which had a vertical spike that extended up into the hull and which had to kiss a laser light beam from a jig on the transom in order for us to know that the waterjet units could be buckled up to the intake ducts/grates.
A lot of measuring, laser projecting, etc. However, you need to keep in mind that the only really tricky part was to assure that the drive would couple properly to the intake ducts because the engines were coupled to the drives via Cardan shafts (a long jack shaft with a constant velocity universal joint at each end.
I will tag you, as requested, for subsequent installments of the series. Thanks and cheers!03/08/2017 #22 Phil Friedman#17 @Lada 🏡 Prkic, much of my writing has been in the interpretation of technical material for an educated, though not necessarily technically oriented audience. I've found the effort gratifying, and my gut tells me you would too. Moreover, your English is beautify and flawless. So if you were to feel the need for a cooperating copy editor, I'd be pleased to helpin any way I could. Not pressuring you. Not pressuring you. Not pressuring you. Cheers!03/08/2017 #21 Phil Friedman#16 That's why, Graham, I believed this might have some wider appeal to even those who couldn't care less about grinding perfect flats for backing washers. In this case, I think the lesson(s) transfer to business management, as well. Thank you for reading and commenting. Cheers!02/08/2017 #19 Phil Friedman#7 Milos, I appreciate the suggestion and already planned to do so -- eventually. What I've discovered, however, is that simultaneously sharing a piece in a number of groups breaks up the "trending" stats among the group notices and tends to retard distribution in the main feed. (LI worships trending and so gives better distribution to what the Algirithm sees as more popular articles.)
So better to wait for sharing into groups until the initial rush of views and likes is complete and the piece sits on the LI "long tail". Cheers!02/08/2017 #18 Phil Friedman#14 Except, @Peter Altschuler, that would not satisfy those who tend to start reading at the end in an effort the glean the crux without the work of reading through the piece.
Oh, and BTW, with all due respect, what is not clear about my deck and preface which said: "THE FIRST IN A SERIES OF RETROSPECTIVES THAT LOOK BACK AT THREE DECADES OF FINDING VALUE-ENGINEERED SOLUTIONS ... This article begins a series that looks back at various value-engineered solutions to problems encountered by the author in the course of several decades of boat and yacht building and shipyard management. "?
Anyway, thanks for reading and commenting. Cheers!
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- 24/06/2017► In Search of the Civil Engineers on beBee ◄
The civil engineers' community on beBee is not much active. That's why most of my activities related to civil engineering are on LinkedIn.
I would like to know how many of us are active on beBee, and willing to engage and discuss the topics related to civil engineering.
If you are interested, please do say so in the comment section.
(Image by Bpress - For Construction & Builders)
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Comments29/04/2017 #3 Lada 🏡 PrkicAstana je grad sam po sebi čudo, koji je izgrađen vizijom jednog čovjeka i uz pomoć najpoznatijih svjetskih arhitekata. Nigdje nema toliko čudnih struktura na jednom mjestu. Sajamski grad će samo upotpuniti sliku Astane po tom pitanju.
Uvijek mi je drago pročitati tvoje članke u Građevinaru, Anđela. :-)
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- 07/04/2017Australian experts found a way to incorporate cigarette butt waste into brick making that not only gets that waste out of the environment, but it also makes cheaper and less energy-intensive bricks. When cigarette butts are added to clay bricks, the energy needed to fire them was cut by up to 58 percent. The bricks were lighter and were better insulators, too, meaning they could help cut household cooling and heating demands, all while keeping the same strong properties of traditional bricks.
Comments07/04/2017 #5 Ken BoddieCan't say I've heard of this brick additive concept before. Sounds a great idea, Andela, although It probably needs one of the main brick companies to get on board, along with a means of readily gathering discarded butts, before it'll get wings. Thanks for the tag, @Lada 🏡 Prkic and @Praveen Raj Gullepalli.
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