I’ve built the upper floor of my house with these sort of beams. Some are more than 5m in length and about 175mm high, pre-stressed and reinforced with steel rod/multi-strand wire. I used aircrete block for infill between beams which was lighter in weight, better thermal insulation and allowed fixings for lower floor ceiling to be simply screw-fixed to the blocks. My son and I put the beams in place ‘Egyptian fashion’ i.e. with steel scaffold tube rollers. The floor is about 200m2 and, after grouting with cement slurry, was overlaid with 10mm ‘Yellofon’ sound barrier, underfloor heating matrix then 75mm sand/cement screed before 10mm porcelain tiles on adhesive. The beams are pre-stressed so that they have a slight upwards curvature which settles down under load. So far no problems.
Thank you for this explanation. My house in Morocco was built using this technique. I believe that this is the normal way for construction here. Economic and we have had no problems seven years after completion. Even the earthquake last year left only very minor cracks in some of the finishing interior plaster
Please do comparable analysis for stress and bending structural moments, as compared to a typical poured slab.. The Beams do not look very strong. What are the PSI rating for the whole slab. What about water/moisture infiltration. Great start but still many questions. I say this as a Structural Engineer
What is the minimum compressive strength of the blocks. What is your concrete grade for the blocks. What size of tendons did you adopt for your beams? Please answer. This is very important.
The blocks are brittle but since they're stacked together and placed alongside prestressed beams, this makes them strong enough for a slab. They're even hollow blocks made out of burnt clay used to make slabs which are more brittle than these concrete ones
It would probably make more sense if you cut the blocks in half because the other half of the block is just added weight that isn't needed. Blocks need concrete and steel reinforcement in order to be considered a stable structure. Blocks can break and crumble without notice.
After casting the slab it will be okay as long as you waterproof it...but the pouring of concrete should be done in a day to ensure the slab is homogeneous
I did something similar in costa rica, 16ftx16ft span. I filled in 2x6 steel tube with 1/2in rebar in the middle and concrete, then set them up tall ways. 6in high 2in wide. And 12in on center. Connected with rebar pins into the walls Then screwed down roofing tin across the top and poured a unified 4in slab with electrosoldered mesh in it. That connected with the lintel The result was a solid roof that didn't bend in the middle. This guy's thing looks like it will break in an earthquake and the blocks will fall and kill whoever lives there.
I wish you could be explaining this tech technically using engineering terms. Like how the "beams" and "blocks" substitutes in terms of compressive and tensile forces. I recommend you do more on these to convince more clients unlike when you explain in plain language as a contractor
I really don't trust this brick and lock system terms of strength. I thing it was mainly introduced to cut down cost and thats all. If you people think this method is stronger, they why is it that you don't use it to build staircase? You won't use the brick and block to build the steps but rather use rcc decking for steps
It’s not really cheaper when you think about it and it is solid enough to withstand up to 450kg/m2. It is mostly used because of its ease to adapt and ease to build
ua-cam.com/video/Dzqjc7l7wuE/v-deo.htmlfeature=shared Watch these pre-made stairs using this same concept. This idea didn't just start recently. It is not a new technology.
Those prestressed beams are not structurally friendly the , the breadth of the prestressed beam is bigger than its depth hence flexure failure is inevitable.
Hello Mr Nick, I know I'm late , I have a quick question. How many blocks and rails can be used to do a upper floor slab for a 10m by 10m 2 bedroom house. How much ( KSH) will it cost including Labor. Please help
This way of doing slabs should come with 2 disclaimers: 1. Every building is unique in span and loads to be carried(building usage). Therefore, every slab MUST go through structural design check. 2. It is highlighting savings. But true savings is realized when you compare DATA. That is, solid slabs vs beam and block. ALL items put into cost ; Oranges vs Oranges.
I would recommend using T beams for beam to beam technology. The ones used here require timber props for support until the slab cures sufficiently. I'll look for more projects using Tbeams
@@PropertyNoma considering the slab is actually on top and not really strongly connected to the blocks and beams, won't it still be an issue even after curing? In fact you just added more weight on top of them blocks n beams. I'm really interested in this tech n would like to build using it when I'm ready but I'm still doing more research esp on very long beams(wider rooms both length and width). I would appreciate a link to Tbeams and see how they look/work.
You’re right… I was looking at that, wood beam, it is old, don’t look is has treatment, woodworm treatment… I’m not too sure about that now…, I wonder how it is now?
This is very dangerous the most important intermediate beams are so weak and adding more blocks lead to more stress on the building because the blocks will be covered with aggregate.
The position of the beam is no good. You have to put for short distance not the longest distance. Place the beam for the short distance that is the best
Has this been checked by a structural engineer this doesn't look like its safe. If anything the slabs should have been turned vertical possibly moreso than flat horizontal receiving blocks and then they are adding wet heavy concrete. Disaster waiting on a rainy day.
This is risky, the rib slabs rods need to project so as too hook with beam rods and also rods to be hooked with floor slabs. U lack reinforcements and is dangerous bro
I’ve built the upper floor of my house with these sort of beams. Some are more than 5m in length and about 175mm high, pre-stressed and reinforced with steel rod/multi-strand wire. I used aircrete block for infill between beams which was lighter in weight, better thermal insulation and allowed fixings for lower floor ceiling to be simply screw-fixed to the blocks. My son and I put the beams in place ‘Egyptian fashion’ i.e. with steel scaffold tube rollers. The floor is about 200m2 and, after grouting with cement slurry, was overlaid with 10mm ‘Yellofon’ sound barrier, underfloor heating matrix then 75mm sand/cement screed before 10mm porcelain tiles on adhesive. The beams are pre-stressed so that they have a slight upwards curvature which settles down under load. So far no problems.
Thank you for this explanation. My house in Morocco was built using this technique. I believe that this is the normal way for construction here. Economic and we have had no problems seven years after completion. Even the earthquake last year left only very minor cracks in some of the finishing interior plaster
If that floor doesn't collapse after the wood support is removed, then it is a miracle. That's a weak "prestressed" beam.
I myself questioned it, but with no knowledge of construction, I couldn't be bold to comment.
Please do comparable analysis for stress and bending structural moments, as compared to a typical poured slab.. The Beams do not look very strong. What are the PSI rating for the whole slab. What about water/moisture infiltration. Great start but still many questions. I say this as a Structural Engineer
Look like the concrete beam is supported by the timber beam.!
I have been watch you in silence...You are really doing good job 👍.Always in details and + giving us the names of the companies and contacts. Kudos 👏
Thanks!
hello
Thank you, using this technology to build my balcony
You won't like the noise that comes out of them
@otimemmanuel1870, what do you mean by noise, please
@@CeEe_AaAa the squiking sound that steel deck makes as you walk above it
thanks for a v informative video... can you also tell us more about waffles in construction -- v popular in South america . Ahsante sana !
Great suggestion! I'll try to find a project using them
What is the minimum compressive strength of the blocks. What is your concrete grade for the blocks. What size of tendons did you adopt for your beams? Please answer. This is very important.
Excellent presentation.
Great technology
Like to know how solid is that concrete block, have they done a test on a concrete block, to make sure they don’t crack easily?
The blocks are brittle but since they're stacked together and placed alongside prestressed beams, this makes them strong enough for a slab. They're even hollow blocks made out of burnt clay used to make slabs which are more brittle than these concrete ones
How do electrical pipes and plumbing pipes go or u drill a hole for them on blocks
You drill a hole through the blocks
Following keenly
More content coming soon
Very good
It would probably make more sense if you cut the blocks in half because the other half of the block is just added weight that isn't needed. Blocks need concrete and steel reinforcement in order to be considered a stable structure. Blocks can break and crumble without notice.
Does the timber support get removed after curing progress ?
Instead of placing precast at long span , wat if place at shorter span ?
Yes the timber support is removed later. And the beams are placed on the shorter span
How do you cater for the hooging moment at the end of the slab, for example staggering the last line to break the tension line
The beams for the blocks are connected to the slab beams end to end
I had same taught
Pls tell us about how cantilever can be achieved via this technology
Don’t u have to put beam in bowing up?
What will happen when you Dont continue your building after making the suspended slap? Can it be affected negetively by rains
After casting the slab it will be okay as long as you waterproof it...but the pouring of concrete should be done in a day to ensure the slab is homogeneous
How do you install conduiting and plumbing?
Holes are drilled through the hollow blocks
Hello.
Do you offer internship program,i did diploma in building technology
I did something similar in costa rica, 16ftx16ft span. I filled in 2x6 steel tube with 1/2in rebar in the middle and concrete, then set them up tall ways. 6in high 2in wide. And 12in on center. Connected with rebar pins into the walls Then screwed down roofing tin across the top and poured a unified 4in slab with electrosoldered mesh in it. That connected with the lintel The result was a solid roof that didn't bend in the middle.
This guy's thing looks like it will break in an earthquake and the blocks will fall and kill whoever lives there.
Looks safe as jelly with a kid
Great content
Where can I get a fundi for fixing the slabs
Kindly speak to Tony of Promax, a supplier of beam and blocks 0722110242
Soo helpful
The way those concrete beam bends without the blocks and more concrete slab add it on top of it kind of bit questionable long term
Can u use beam to beam technology to contract water tank slab
It's possible, but I would recommend t-beams and a structural engineer's supervision when construction it
Just use steel decking thenpour the slab...easy, fast, cheap and safe ?
Good from Nigeria
An easier way to do this is to pour a slab floor over 2 way rebar. Use wood plywood forms held up by wood post. Don't need the blocks.
Make a video of your suggestion bra waiting
Lih nagkacrack yan eh omg
U r the builder for my house 1day
Hi can you build a beam on site or it has to be precast
It has to be precast as the steel tendons inside the beams are tensioned by a specialised machine
What's the rate of labour per square meter?
I wish you could be explaining this tech technically using engineering terms. Like how the "beams" and "blocks" substitutes in terms of compressive and tensile forces. I recommend you do more on these to convince more clients unlike when you explain in plain language as a contractor
Why dont you clarify yourself
Kama hujaelewa enda site wacha mambo ya engineering
@@MC_Kanjambi Aende site akapime 'compression na tension'
@@bazukamimi5721 ataka kushinda akileta mambo nyingi za vitabu huyu ukiona hivyo ndio imeingia shule🤣
Just to remind all, practice safe way of working. Al safety measure not observed... Always safety first.
Thanks sir
Do they (Bimtech Manufacturers) have a site in Kilifi county?
Kindly contact them. Contacts in the description
I really don't trust this brick and lock system terms of strength. I thing it was mainly introduced to cut down cost and thats all. If you people think this method is stronger, they why is it that you don't use it to build staircase? You won't use the brick and block to build the steps but rather use rcc decking for steps
It’s not really cheaper when you think about it and it is solid enough to withstand up to 450kg/m2. It is mostly used because of its ease to adapt and ease to build
ua-cam.com/video/Dzqjc7l7wuE/v-deo.htmlfeature=shared Watch these pre-made stairs using this same concept. This idea didn't just start recently. It is not a new technology.
Those prestressed beams are not structurally friendly the , the breadth of the prestressed beam is bigger than its depth hence flexure failure
is inevitable.
Good, from Nigeria r
Interested
My concern is the weight of the slab
Hello Mr Nick, I know I'm late , I have a quick question. How many blocks and rails can be used to do a upper floor slab for a 10m by 10m 2 bedroom house. How much ( KSH) will it cost including Labor. Please help
Hi, kindly reach out to me through email, propertynoma5@gmail.com
@@PropertyNoma hey, Do you have an extension in Uganda or you can deliver the service as well in Uganda?
What rebar size and how many do you use in the beam.
How long is the curing process?
Concrete gains its most of its strength by 28 days. They are usually cured in bulk in the yard of beam & block companies
How safe is the technology?
It's a pretty standard technology in some countries. That said, always go for reputable beam & block companies in your country
@@PropertyNoma I'm in Kenya
This way of doing slabs should come with 2 disclaimers:
1. Every building is unique in span and loads to be carried(building usage). Therefore, every slab MUST go through structural design check.
2. It is highlighting savings. But true savings is realized when you compare DATA. That is, solid slabs vs beam and block. ALL items put into cost ; Oranges vs Oranges.
@@kibuchomartin5016 Thanks for your input Martin!
Pls now do research in lightweight concrete foam blocks
Widely used in Cameroon 🇨🇲
Thanks for the information
Hello brother
This thing looks weak
The end to end beams seem "weak", I can literally see them bending. Won't this result in a curved in floor esp if they're very long?
I would recommend using T beams for beam to beam technology. The ones used here require timber props for support until the slab cures sufficiently. I'll look for more projects using Tbeams
@@PropertyNoma considering the slab is actually on top and not really strongly connected to the blocks and beams, won't it still be an issue even after curing? In fact you just added more weight on top of them blocks n beams.
I'm really interested in this tech n would like to build using it when I'm ready but I'm still doing more research esp on very long beams(wider rooms both length and width). I would appreciate a link to Tbeams and see how they look/work.
@@briosky254 Hi, checkout Ecoconcrete's website to see their Tbeams
Thats wht I been thinking too use thicker timber 😮timbered flooring and then blocks
One day everything is going down
Those pieces of wood don't look too strong though and they even look old too.
The timber is there to temporarily support the beams & blocks. They'll eventually be removed
@@PropertyNoma I see
How much will it cost to construct for double garage and stairs for top braai area
You’re right… I was looking at that, wood beam, it is old, don’t look is has treatment, woodworm treatment… I’m not too sure about that now…, I wonder how it is now?
Kindly connect me with that contractor
Hi thanks for the good work it's inspiring, the phone number you gave for the contractor is always off, please give another number
This is very dangerous the most important intermediate beams are so weak and adding more blocks lead to more stress on the building because the blocks will be covered with aggregate.
It's scary
The position of the beam is no good. You have to put for short distance not the longest distance. Place the beam for the short distance that is the best
Yes the shortest span of a room
how is this allowed? one earthquake will cause this to fail/collapse
Has this been checked by a structural engineer this doesn't look like its safe. If anything the slabs should have been turned vertical possibly moreso than flat horizontal receiving blocks and then they are adding wet heavy concrete. Disaster waiting on a rainy day.
This is risky, the rib slabs rods need to project so as too hook with beam rods and also rods to be hooked with floor slabs. U lack reinforcements and is dangerous bro
Very dangerous...I can't involve myself in this.
So easily collapsed by earthquake magnitude 4
How can I get your number Guys
Ribs look flimsy
I don't trust this
Absolute nonsense
Your beams and your wall fixings are too weak
What is the mix ratio of the block
Great content