Donswampo:
There Is This Spiral Staircase I designed for A Client in Abia-state,The Information reaching me says,The joiner who is to cave it out, lacks the technical know how.with regards To dimensions,and it's procedure,So i'm heading down to Abia state sooner than later,i would Loved the professionals herein to enlighten me on how To go about it, if i should be the one to surpervise the Joiner,any useful information will be welcome.Cc All professionals.let me upload the perspective view.showing the inner casement/situated staircase..seems they are trying to Introduce a standing re-inforcement pillar under the stair.thereby reducing it's beauty.

Donswampo:
There Is This Spiral Staircase I designed for A Client in Abia-state,The Information reaching me says,The joiner who is to cave it out, lacks the technical know how.with regards To dimensions,and it's procedure,So i'm heading down to Abia state sooner than later,i would Loved the professionals herein to enlighten me on how To go about it, if i should be the one to surpervise the Joiner,any useful information will be welcome.Cc All professionals.let me upload the perspective view.showing the inner casement/situated staircase..seems they are trying to Introduce a standing re-inforcement pillar under the stair.thereby reducing it's beauty.

Donswampo:
There Is This Spiral Staircase I designed for A Client in Abia-state,The Information reaching me says,The joiner who is to cave it out, lacks the technical know how.with regards To dimensions,and it's procedure,So i'm heading down to Abia state sooner than later,i would Loved the professionals herein to enlighten me on how To go about it, if i should be the one to surpervise the Joiner,any useful information will be welcome.Cc All professionals.let me upload the perspective view.showing the inner casement/situated staircase..seems they are trying to Introduce a standing re-inforcement pillar under the stair.thereby reducing it's beauty.

Donswampo:
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.

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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.

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Weigher:
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

lastpage:


*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.



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3strike:
Folks Please I need help with interlocking stone. I need a hookup. please help a brother out.

size: 250 SQM

Thanks

3Strikes!!!

EgunMogaji:


Thank you for sharing this.

I would love to see same from Ibadan suppliers to Elebu area.

For me specifically for stone dust and 3/4.

gabbytabby:
make sure its 3/4 not 3/4 down most buoilders don't like 3/4 as this is larger but suppliers like this as cheaper.

FastShipping:


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.

KolaShangOne:
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

EgunMogaji:


But even deckings use pillars though.

............

Regarding the staircase, I am not a commensurate builder or a structural engineer but I can not see who that stair as designed will stand without a steel backbone or a spine pilar.

EgunMogaji:
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).

brabus:


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.

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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"

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KolaShangOne:
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

KolaShangOne:
You can mix 3/4 down and stone dust combo witohut using sand. It will give you a fine finish.

brabus:


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.

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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!

FastShipping:


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

brabus:


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.

brabus:


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.