How to build a suspended concrete slab part 1
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- čas přidán 11. 09. 2024
- HOW TO BUILD A SUSPENDED SLAB PART 1: EPISODE 5
In this video I show you how to build suspended concrete slab formwork for a 2 storey modern concrete house construction. The two storey formwork timber framing techniques I use, I have learnt over my years in concrete construction.
I hope you enjoy watching my house construction process of formwork construction.
Check us out @ / bmformwork
If you're interested in the tools I'm using you can buy from amazon with these links (I make next to nothing from this, just recommending the tools I love)
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this guy is a real legend, respect
thanks mate
Best on CZcams thank you
Thankyou
Videos are improving!
Great video thanks
No worries
Great video mate
Thanks 👍
I think there would be a whole lot of ways to set that up, and I'm just figuring it. Maybe just start with a lot of steel I beams permanently installed first, then lay the sheeting on top of that with 4 to 6 inch aircrete for weight reduction, and primarily rely on steel strength for structure, but I'm just guessing.
Cranes are and haulage are expensive. Every region does things differently, and people try many methods here however this is the most popular way where we are so it must have its advantages!
Next level stuff this. :)
this is the first video I've seen on how to shore up a concrete floor slab.Thank you
Not many people are aware how suspended slabs get to be suspended slabs
@@bmformworkconcreteconstruc9783 your too right there.I got the layout of the rebar but not how it was shuttered ready for laying concrete.
Nice Videos!
Thanks
A few frames would make your life a whole lot easier.
frames can be much easier for inexperienced guys. But if you can do it without them it is far quicker using props. only have to carry 4 props vs 2 frames, 2x braces, 8x jacks then set 8x jacks. Frames also destroy site access and do not fit great on a truck or on forklift tines. I usually just use frames for beams, high sections and large balconies. I prefer quickstep or layher than frames(standard and ledgers) as they more versatile.
quickstage*
@@bmformworkconcreteconstruc9783 I think saying “inexperienced “ guys is the wrong term. If you had to get an engineers certificate on the deck they wouldn’t pass the props without tube bracing or gates.
You also have the benefit of newish materials that are all good lengths, you wearnt given a few bundles of short bearers to use lol
I don't need an engineer's certificate to pass formwork on a house so what is your point?
@@bmformworkconcreteconstruc9783 in NSW any suspended formwork is supposed to have a certificate before pouring…. That’s just the way I have had to do things the last 30 years.
Is it possible to replace a wooden framed roof into a concrete slab? What would be the better solutions in building a concrete slab with existing walls and columns
Yes this is possible, we have done this before however upgrades are required to the house foundations which will carry the weight of the new slab and structure above. Sometimes its not as bad as first thought.
@bmformworkconcreteconstruc9783 my lord, what would that cost for a standard size roof replacement? Removal, foundation work, and roof???
real good no bullshit relevant information
thanks Mark
Great video what are the sheet made of if I don’t want to use plywood
The sheets I use are plywood
I live in the US but I wanna build a brick house with concrete floors, sadly we only have wooden homes here, glad I came across your videos, thanks.
start a new trend!
Yes you guys build silly little matchstick homes then wonder why it gets blown to bits when tornadoes hit. Build a solid brick or stone house me laddy!
@@farceadentus lol! Yeah good luck with your silly brick house in an earthquake zone lol!
@@henra2244 no earthquakes here sweetcheeks
@@farceadentus LOL! You actually think there are no earthquakes in the US? Wow, mate, just give up already lol.
I also intend to build me a suspended concrete slab, but instead of using the sheets plywood i prefer to use timber planks.
Wich will create an imprint after removing.
Any specific advise would be nice, thx.
Keep all the joints sealed up so it's water tight. Use form oil just before you pour. Keep everything clean. Make sure your reo bar chair don't bite into the timber and leave an imprint.
Where can I learn correct spacing for whatever thickness slab and different timber sizes used ?
Good question. Ask someone who does this in your area (will change depending on the local products used) but for it to be covered by insurance you can ask an engineer to give you this.
Alot of work there
We used to do 3 or 4 of these a week when I had my crew and just did suspended slabs!
@@bmformworkconcreteconstruc9783 were doing a small one in cebu in a few weeks. Getting materials up now my brother in law will be doing it. I can see that this will be a huge project even for a small area. Working with what you have. Much respect for you and your crew
how this lazer leveling tools works? Nice work!
just attaches to something metal with magnets and sends a beam around. the receiver tells me when height is correct.
can you take all the formwork down when the concrete slab is set and can you reuse the timber!
Yes, it would be very expensive if we couldn't re-use anything. In residential formwork the key to making money as a business owner is maximising how many uses you get from all your materials. You have to do about 6 jobs to cover the cost of one job worth of materials including props.
Are you serious what sort of question is that.Its not rocket science.
Great video, what size timber’s are you using.
Hi Tim, timbers are 95x65 lvl's (3×4's) Some of the bearers are larger 135x87 (6×4).
@@bmformworkconcreteconstruc9783
Would it be okay to use 170 x 45 lvl?
@@timnewsham819 I don't want to recommend anything as I do not know where you are and what your lvl's build quality is, or your slab thickness, or the spans you plan to use, but a 170x45 Australian structural lvl will be much stronger than what I have used.
@@bmformworkconcreteconstruc9783 Thanks
What level is that
I can’t remember, but I now use a Hilti line laser. It’s a much better version of what I used in the video.
OK thanks
whats tieing the deck in theres cross bracing ie frames ?
great video by the way
Hey Fergz, extra nails in the sheets tieing the balcony to the main room, some straps over brickwork and 4x angled no.3 props on balcony.
@@bmformworkconcreteconstruc9783 awsome videos so u tied some of deck into other rooms with straps ive never herd of angled props? i thought if u were going just use props for a deck u would have to have a locked in room or use scaffold tubes to contruct a makeshift frame or like when useing peri ratchet strap the bearer to the ground thanks for the videos pal exelelent veiwing do u alwaze work by yourself?
@@fergzmack6963 hey mate, yes you are correct, you need to prevent lateral movement of the suspended slab. I did that with raking props which are not shown in video. You can use scaffold tube or peri ratchets but there is no need here. It is also system dependent. I am framing with timber, I know how to lock it in without the need for scaffold tune and ratchet straps. The balcony is only 2.8m it is tied into the job with steel strapping at deck level. I will make sure I show in future videos. It also depends how you pour the conc. The is more lateral force if the concrete pushes off something into the edgeboards. You have to find where it will separate from main deck and lock it there. In my case it was the timber splice. So I nailed off the sheets with extra nails, raked long props from balcony to ground and strapped main deck to other rooms. There was no possible movement.
@@fergzmack6963 I used to have a team varying from 4-8guys working for me. However I decided to scale down and I am able to earn very good money on my own doing more complex work. I do some cool jobs which is why I started the channel, but since starting the channel the tricky jobs have dried up a bit! That has started to change again though.
What are the centre measurements between props and what are centre measurements for bearer spacings?
Depends on the slab thickness and timber sizes used.
Nothing worse then been low on gear at work, especially on a Thursday
For some... there is nothing truer
Where is part 2 ?
czcams.com/video/dWTNPCOZVc0/video.html
Yanks would have 10 guys minimum to do what you're doing alone haha
From what I have seen they have some really smarts ways of doing things. Very different methods to us.
👍
Question mate, did you add any additions to your nail belt?
buckeroo belt, DeWalt nail bag, buckeroo hammer and nip frogs. And I got the suspenders as my nail gun is so heavy it pulls the nail bag down.
I really like the DeWalt nail bag's as they have good storage and great pencil, pen holders and a speed square slot.
@@bmformworkconcreteconstruc9783 cheers for that. Looking to get the same but realised the same one you have is missing the hammer and nip frogs to the normal ones you get from bunnings
Not bad.
cheers
Ya lukin men?
You want a job?