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Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 9:55pm On Oct 21, 2015 |
Donswampo: Wow, this is going to be stunning if it can be pulled off safely without pillars. I've seen it done here but they used a steel backbone and glass steps. Good luck and I salute you on drawing this but there's difference between elaborate drawing and finding competent solution to carry it out. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 10:07pm On Oct 21, 2015 |
Yeah thanks,I understand what You mean,like in designs,i learnt that not all designs are buildable,but in my world,i use creativity and imagination to design.i want that stair to stand on it's own without any introduced pillar to hold it.that's one of the reason i designed it that way. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by abdulwastecx(m): 10:54pm On Oct 21, 2015 |
Donswampo: where is the stair structural design and detail sheet? 1 Like |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 11:31pm On Oct 21, 2015 |
Alright,i'm with the complete design here with me,let me state out the structural detailings,though they are in paper format,so uploading the details it's a little bit hard,unless you have other related alternatives,Like in the risers/treads,It states 7-equals treads,@225-2100 With same equal risers@150-1200 Then the lenght of the stair it's 3300,the landing ranging in 900/ then, using 5Y1002c/c The width of the spiral is 2625m using 5Y1007-200c/c as t&b..i believed that's Top/bottom re-inforcement. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 11:39pm On Oct 21, 2015 |
i will be heading down there Tomorrow,so as to meet the builder/joiner,and if it's possible i might change the spiral staircase to L-shape one. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 12:15am On Oct 22, 2015 |
I've walked on similar designs to this in the past. They usually have a hidden steel backbone that blends in and the threads are lighter being of either glass or wood as opposed to concrete.
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Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brabus(m): 12:21am On Oct 22, 2015 |
Donswampo: Check this out. That's Helical Spiral Staircase. It's not for the faint-hearted carpenters. I just started one yesterday https://www.nairaland.com/1588017/nexthome-builders-2014-2015-new/37#39207153 This unique circular staircase has no center support. What we did was to design the stair to cantilever from the wall at the midpoint. 1 Like
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Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 12:26am On Oct 22, 2015 |
Exactly the same design with mine,you know the steel back-bone helps in shaping the stair in spiral form,since the steel it's fixed,unlike the one i designed,i'm planning/checking/discussing on how to construct the stair without introduding any back-bone pillar which might serve as an overbearing column,i want that stair to look unique without any external pillar to support it,that's the purpose of my design.thanks EgunMogaji...i Love high creative thinkers Like You. 1 Like |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by lastpage: 7:28am On Oct 22, 2015 |
Donswampo: *Can you first design a platform the shape of the base of the Stairs with wood *Use "removable" wooden supports under it (Vertically and horizontally). This will be removed when cast solidifies. *Reinforce this with a "thick, flat but ribbed" sheet of iron the size of the stairs ..or like 75% size (will serve as support for eventual stairs, but will be embedded inside) The ribs can be in form of welded rods to it, basically to give it strength) *Now, finally cast the base with concrete (using the ribbed-iron-sheet as reinforcement).... and remove the wooden supports after it cures. The idea is that like a Decking, which you use wood to form and support, but the woods are removed when cured and it can support itself, using its internal re-reinforcement. You can fine-tune it but if l were to implement it, l know l can pull-off this concept. Lastpage! |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brabus(m): 8:35am On Oct 22, 2015 |
lastpage: This is not like a decking especially the design the poster is trying to achieve. He actually designed a self supporting helical sphere staircase. What he needs is a computer analysis of the staircase done by a very good detailer (Structural CAD Engineer) and not a what-I-think-should-work answer. But for me, I don't see how he's gonna pull this off without support and adjustments to the design. This is not car shock absorber helical spring. That it will be finished with concrete means it will definitely need support but it may be hidden like mine and many others that I've seen anchored to circular walls. Critical factors to consider: 1. The center (the smaller the better). The secret of this design. 2. Floor support (must be adequate). Think of how a palm tree stands without support. 3. The shuttering |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Weigher: 11:51am On Oct 22, 2015 |
It is a pity that some people are using big grammar and sweet names to claim lord of granite here, they are liars. I only know of two people out of here on nairaland that are quarry agent others are third parties relying on the info that their quarry customer furnished them only come on nairaland to brag. I have worked with a lot of quarries in Abeokuta as a scale man still working with one now. The facts that some of them buy from quarry agent. I only know of two quarry agent, one is within 40 who is a nairalander and the other One is in his early 30 thirties. In 2009/10, we knw hw many of them on ground but some people who are far away from happening in quarry suddenly hijacked through the use of big grammars. There is a strict procedure to become quarry agent. period |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brag3: 2:11pm On Oct 22, 2015 |
Thank you Sir. Can you please let us know who has been bragging so we can avoid them in future? Weigher: 1 Like |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 2:24pm On Oct 22, 2015 |
lastpage: But even deckings use pillars though. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by gabbytabby: 3:31pm On Oct 22, 2015 |
3strike:try 080332657647 |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by gabbytabby: 3:38pm On Oct 22, 2015 |
EgunMogaji:make sure to check with your builder that its 3/4 not 3/4 down most buoilders don't like 3/4 as this is larger but suppliers like this as cheaper. 1 Like |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by FastShipping: 3:57pm On Oct 22, 2015 |
gabbytabby: Why not 3/4 down? Why 3/4? The outcome of 3/4 down is always more refined than 3/4. I prefer 3/4 down to 3/4 anytime any day for flooring, pillars/columns and lots of other usage. In the U.S, engineers make use of the 3/4 down a lot more than 3/4 granite. I am a witness to this because I have them working less than 200 meter from my house at the moment that I see on daily basis. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by gabbytabby: 4:03pm On Oct 22, 2015 |
FastShipping:I meant for him to buy 3/4 down as his builder would prefer this. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 4:09pm On Oct 22, 2015 |
Thanks FastShipping and GabbyTabby, I'm using 3/4 down. Really want to try stone dust for the slab but I'm on the fence (pun). |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by KolaShangOne(m): 5:10pm On Oct 22, 2015 |
You can mix 3/4 down and stone dust combo witohut using sand. It will give you a fine finish. Those stairs he showed need support. Except some magic Structural analysis proof its not needed @Egunmogaji I'm not trying to shield or keep mute over the issue but I'm not well informed over the issue. I only have pictures. Who knows if he had Structural calculations to follow? Just that seeing it, I felt its not right |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 5:34pm On Oct 22, 2015 |
KolaShangOne: I know you represent a corporate and have to watch out for your postings in the best interest of your team, so no worries. But if you ever see something dangerous on my build then you have my full permission to bring it up for discussion. My ego is worth less than the safety of my family and friends ![]() I absolutely want the smoothest floor that I can get and I think I will go with the stone dust for the german floor. Regarding the staircase, I am not a commensurate builder or a structural engineer but I can not see how that stair as designed will stand without a steel backbone or a spine pilar. Thanks my friend. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by lastpage: 6:04pm On Oct 22, 2015 |
EgunMogaji: Egun, you are on-point! First, l used "Decking" to explain-away the use of wood underneath, as TEMPORARY SUPPORT. That is, you use it to support the weight and when it is cured/dry, you remove it as the "cured concrete" can now be self-supporting. Secondly, "Nothing floats in the air" ! ![]() ![]() ![]() Except it is an aeroplane and that is only for a definite period! The staircase in question will have a 'beginning'... and an 'end'! These two correspond to the basement of the stairs ....and the landing at the top. This is where the supports will be (Start stairs, and end of stairs). I am sure what the @Op has in mind is a stairs that does not have any support "in-between", apart from those at the base and "landing". So, theoretically, like the span of a bridge, in-between one support and another, a RIGIDITY that is "strong enough to not deform", between those two points. Correct me if l am wrong. That is why l suggested embedded, reinforced Metal plates that span the length of the Stairs but are invisible to the naked eye, when finished. When it is still wet, you need the wooden support to hold its weight (This why l used a Deck as an example), but when it is fully cured, a combination of the strength of the Concrete and the embedded reinforcements is enough to carry the weight and make it self-supporting. Lastpage! 1 Like |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by lastpage: 6:08pm On Oct 22, 2015 |
EgunMogaji: Please do. You wont regret it I did same not too long ago ....No Sand at all. It was excellent but ensure that it is well-mixed since the absence of Sand would mean that only the cement will act as the "binder" to the stones. You will then have to strike a balance between "Cement" and "Fluidity". My Builder was saying the Cement is enough but l also reminded him that the "binding effect" is equally important otherwise, cracks will develop during curing. Its all about the "Science" Lastpage! |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by lastpage: 6:18pm On Oct 22, 2015 |
brabus: It is like a decking, in terms of being self-supporting (after the initial bamboo/Plank support have been removed) at the end of the day. Even the "Computer Design Software" that generates these designs and calculations, is written by people "Who can first CONCEPTUALIZE WHAT THEY WANT TO ACHIEVE..... put it on paper and then convert it to a software program! We need to start thinking "out of the box" and not just doggedly rely on what is already available. That is how we innovate. There is a "process and workflow" to such procedure. That you think it is not possible, does not mean it is not possible, its just that as of now, YOU cant figure it out yet. ![]() ![]() Lastpage! |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 6:22pm On Oct 22, 2015 |
lastpage: Did you use wire mesh? I would love to see a pic of the finished floor if you have a chance. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brabus(m): 6:27pm On Oct 22, 2015 |
KolaShangOne: |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brabus(m): 6:40pm On Oct 22, 2015 |
KolaShangOne: Fine finish? Will it be better than using sand? What are the pros and cons of using both? I've used both on my driveway and I can tell you if I have to do it over again in an area where there's heavy traffic, I'll use sand again and again. Reasons: * Stability and Workability * Sand did not move under excessive rain or when the area is subjected to flooding. * Dust did excellently well on my DPC but not on my driveway. 1 Like
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Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by FastShipping: 6:50pm On Oct 22, 2015 |
brabus: In your own case, your driveway didn't come out as you desired because of the ratio of sand to granite and the amount of water used. By looking at your driveway, the concrete had too much water in it. It should be damp while the mixture for yours was too wet. The picture idea you took off the internet for your driveway was different from what you had for your own driveway because of few factors. Like in the U.S, I always see that the ratio of stone dust to granite is different from ratio we use in Nigeria. Here, they use same amount of sand to granite for a bag of cement with a lot less water. That ratio gives you fine finish because it is easy to cast on the floor. In Nigeria, we use more granite than sand which makes good finish impossible. Also, you did not use concrete tools that that were used for the picture you took off the internet. Here, we have professionals who deal in concrete ONLY. They are not the same bricklayers we use in Nigeria who deal in block settings, plastering, concrete and others. Did you do yours like in the video below? https://www.youtube.com/watch?v=tqP1DDYt2Gk |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brabus(m): 7:04pm On Oct 22, 2015 |
lastpage: Baba, it's possible but I won't take a bet on it. But in case you ask me what's possible, here a picture. Compare this with what the designer posted. The curvature, the centerline and the number of risers. It's practically impossible and I can take a bet there's no structural calculation for the proposed staircase. At least, I can take a bet on that. A o ki ngbo buburu l'enu abore. You forced me to say this. 2 Likes
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Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by brabus(m): 7:12pm On Oct 22, 2015 |
FastShipping: The driveway came as desired. The picture posted is not a finished work. It's still a work in progress. Im already speaking with some guys who are very good in epoxy floors to see what I'm trying to achieve and what needs to be done. I never wanted to have a finished floor using sand and cement. The picture idea I took off the net was not finished with sand and cement (concrete). They added some additives. Also I didn't use sand, stone dust and cement mix. It was pure stone dust for the driveway and I used sand in other areas. And for the tools, I have some tools at home for my DIY projects and I'm still looking at getting some other tools for bigger works (like the power roller screed pictured below).
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Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by Nobody: 7:14pm On Oct 22, 2015 |
I'm considering it for my slab. My driveway will be stamped and stained concrete and loads of gravel. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by FastShipping: 7:18pm On Oct 22, 2015 |
brabus: Why doing it over and over again if you already got the desired outcome? Well, I know from the picture you took off the internet was made with concrete, stone dust and cement. No other materials added. The tools and ways they go here to get to fine finish is not the same way we also use in Nigeria. |
Re: General Topic Thread-To Discuss Anything And Everything in Building Construction by mufutau55(m): 7:19pm On Oct 22, 2015 |
brabus: What about decking... would you recommend Cement and Stone Dust? Or mix of cement, stone dust and sand? Thx. And I think 3/4 down granite will be used? I also know that Odo-Ogun sand is good for decking. Hajji M. 1 Like |
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