Section through a Brick Veneer, Slab on ground Building Part 1
Summary
TLDRThis video script offers a detailed walkthrough of constructing a brick veneer slab on ground, a common method in Sydney. It begins with site leveling and concrete slab formation, incorporating Waffle Pod for strength and less concrete usage. The process continues with reinforcement, slab pouring, and formwork removal. The script then describes wall construction, including bottom plates, studs, noggins, and lintels, followed by fascia and roofing. The focus is on the importance of the first tile's angle and preventing moisture issues with anti-ponding boards. The video promises to cover brickwork and interior fitting in the next installment.
Takeaways
- ποΈ The video provides a step-by-step guide for building a brick veneer slab on ground.
- π This method is commonly used in Sydney, particularly for project homes.
- π οΈ The process begins with leveling the site using a grader, bulldozer, and laser level.
- π¨ Formwork is set up to pour the concrete slab, including forming a recess for the brickwork.
- 𧱠The Waffle Pod slab method is often used, involving foam blocks to create voids and reduce concrete usage.
- πͺ¨ Alternatively, compacted hardcore fill with a layer of blinding sand can be used before the membrane.
- π A 200 micron polyethylene membrane (Forticon) is placed to prevent punctures and ensure smoothness.
- π Reinforcement, including trench mesh and concrete slab mesh, is installed as per structural engineer designs.
- 𧱠Once reinforcement is inspected and approved, the concrete slab is poured and cured for about a week.
- π The video covers the subsequent steps of constructing walls, installing windows and doors, and building the roof structure.
Q & A
What is the most common method of building a house in Sydney as described in the script?
-The most common method of building a house in Sydney is through a brick veneer slab on ground, which relies on being built on a level block of ground.
Why is the site leveled before building the house?
-The site is leveled to ensure a stable and even foundation for the house, using a grader, bulldozer, and laser level to achieve a perfectly level surface.
What is a Waffle Pod slab and how does it contribute to the construction process?
-A Waffle Pod slab is a roughly one-meter by one-meter square block of foam that creates a void under the slab, reducing the amount of concrete used while still providing strength through the pattern that creates beams in between the slab.
What is the purpose of the membrane placed directly on the ground during the construction of the slab?
-The membrane, commonly called Forticon, is placed to prevent moisture from seeping into the ground and to maintain a smooth surface, preventing rocks from puncturing holes in the membrane.
Why is compacted hardcore fill used in the construction process?
-Compacted hardcore fill is used to provide a solid base for the slab and to create trenches for beams, ensuring structural integrity and support for the house.
What is the role of the reinforcement in the concrete slab?
-The reinforcement, which includes bar chairs and a cage of Trench mesh, is designed to provide structural strength and stability to the concrete slab, as specified by the structural engineer's plans.
How long does it generally take to strip the formwork after pouring the concrete slab?
-It generally takes about a week for the concrete slab to cure enough to safely strip the formwork.
What are the components of the wall in course in the construction process described?
-The wall in course is made up of a bottom plate, common studs, noggins, a window sill, jamb stud, lintel, and a top plate, with a ribbon plate for the trusses to sit on.
Why is the fascia installed before the roof tiles?
-The fascia is installed first to provide a finished edge for the roof and to support the roof structure, ensuring a solid base for the tiles.
What is the purpose of the Bellcast batten in the roofing process?
-The Bellcast batten is used to kick the first tile, ensuring that the angle of the tile looks consistent and aesthetically pleasing, preventing the first tile from looking flat.
What is the function of the anti-ponding board in the roofing process?
-The anti-ponding board, made of 4.5mm fibro, supports the sarking and prevents it from sagging near the gutter, ensuring that moisture runs off effectively into the gutter.
Outlines
ποΈ Building a Brick Veneer Slab on Ground
This paragraph outlines the process of constructing a brick veneer slab on ground, a common method in Sydney for project homes. It begins with site leveling using a grader, bulldozer, and laser level. The foundation involves forming up for the concrete slab, which includes creating a recess for the brickwork. Modern construction often utilizes a Waffle Pod slab to reduce concrete usage while maintaining strength through foam blocks that create beams. The process also includes laying a 200-micron Polyethylene membrane, known as Forticon, to prevent moisture issues. Reinforcement in the form of Trench mesh and bar chairs is essential and must be inspected before pouring the concrete slab. After the slab is poured and cured, formwork is stripped, and the next step is to start building the walls with bottom plates, studs, noggins, and lintels, followed by the installation of trusses for the roof.
π¨ Roofing and Fascia Installation for Brick Veneer
The second paragraph focuses on the roofing process for a brick veneer structure. It emphasizes the importance of quickly installing the fascia, whether made of timber or metal, to provide shelter for subsequent work. The fascia is followed by the installation of the first tile battens, including a Bellcast batten to give the initial roof tile the correct angle, preventing it from appearing flat. An anti-ponding board made of 4.5mm fibro is used to support the sarking and prevent sagging near the gutter, ensuring proper runoff into the gutter system. The paragraph concludes with the placement of additional tile battens to support the roof tiles, marking the first stage of the brick veneer construction process. The next video will continue with the brickwork and interior fitting.
Mindmap
Keywords
π‘Brick Veneer
π‘Level Block
π‘Concrete Slab
π‘Waffle Pod
π‘Reinforcement
π‘Forticon
π‘Wall In-Course
π‘Fascia
π‘Bellcast Batten
π‘Anti Ponding Board
π‘Sarking
Highlights
Introduction to building a brick veneer slab on ground, a common method in Sydney.
The importance of leveling the site with a grader, bulldozer, and laser level before construction.
Forming up for the concrete slab, including the recess for the brickwork.
Use of Waffle Pod slab to reduce concrete usage and create strength through foam blocks.
Alternative method of using compacted hardcore fill before laying the membrane.
Laying a layer of blinding sand to level and smooth the top of the fill before membrane installation.
Installation of a 200-micron Polyethylene Membrane, commonly known as Forticon.
Placing bar chairs and reinforcement in the footing and slab as per structural engineer's plans.
Inspection of reinforcement by the council or private certifier before concrete slab pouring.
Pouring the concrete slab and allowing a week for curing before stripping the formwork.
Leaving the Forticon membrane intact for backfill against landscaping and topsoil.
Constructing the wall with bottom plate, studs, noggins, window sill, jamb stud, lintel, and top plate.
Use of ribbon plate and trusses for roof framing.
Installation of fascia, either timber or metal, to support the roof.
Quickly getting the roof on to provide a working space underneath.
Laying the first tile battens, including a Bellcast batten for aesthetic purposes.
Use of an anti-ponding board to support sarking and prevent moisture issues near the gutter.
Finalizing the roof with tile battens and roof tiles.
Upcoming video to cover brickwork and interior finishing.
Transcripts
G'day and welcome back to Buildsum and as you might be able to see we're back on the site
look at our piece of land here and today what I want to show you is a
step by step
build up of a
section through a brick veneer slab on ground
Building this is probably the most common method that they use in Sydney
currently with all the project homes that are being built
and it actually relies on being built on a level block of ground so a lot of jobs
first thing that'll happen is they come out and they level the site
with a grader,
bulldozer and grader and a laser level getting all nice
perfectly level and then they can start to build the house so first thing they have to do is
get the slab poured up, so they're going to
form up for the concrete slab
form up far so they can actually form the recess of this board here in
The slab to take the brickwork you'll see that as we build it up
then
Depending on how they do it most of them do a Waffle Pod
slab nowadays, so I'll put the membrane directly on the ground of course bringing it up the edge of the formwork
like such and
Then I'll put in their Waffle Pod. Which is just a roughly a metre by metre square block of foam and that
just fills in
or creates a void under the slab so we're not using as much concrete, but the
shape or the pattern that they're put in creates beams in between the slab which creates the strength and
they can champher the corners just to give you strength on the internal corner of the slab to then get the shear point
That's why method the other method is to
before you put the Membrane down put in
compacted hardcore fill
And what they normally do is just put this all the way through the site
And then they come back later and dig the beams in or the trenches in to this later on
Top of the fill because this has normally got some sharp rocks in it
I'll put a layer of blinding sand
Okay, so this helps you to get the top of the fill
down exactly level it also keeps it very smooth and it stops the
rocks from puncturing holes in the Membrane which we'll get our next
so your 200 micron
Polyethylene Membrane
Commonly called Forticon it goes across the top back down the end of the trench and back up on your formwork as well
Next step is the place your bar chairs and your reinforcement, so we have
reinforcements in the footing itself, so there's a cage there two layers of Trench mesh and
we also have a layer of mesh in the concrete slab okay all that will be designed
on your plans
by your structural engineer you won't have to worry about too much about what you actually put in there, but you have to have reinforcement
Once the reinforcement all been placed and inspected by the council or the private certifier
you can then pour your concrete slab and
there we go we've got our floor poured
After generally about a week is a good amount of time. You can strip the form work
of course you'll still have your
Moisture your Forticon, your membrane there you want to leave that
Intact as much as possible because eventually your backfill against here with with landscaping and topsoil
All right, so that's our floor down. So the next step then is to start our walls
So you put your wall in, course walls made up of your bottom plate
your
Common studs to go from top of the wall to the bottom of the wall
We have our noggins that go between our studs
This opening is a window. So we have a sill, a window sill and we have a Jamb stud directly against the window on
the other side
Here this one is similar to a common stud that it runs from top to bottom but again
It's associated with the window so it's referred to as a window stud and we have our lintel
Carrying the weight of the opening and our top plate
in most cases nowadays we would have then a ribbon plate and
Our trusses go on top of that
So we'll get our roof on or the frame up anyway
the next job then be to get your fascia on whether you use a timber Fascia or a metal fascia doesn't matter
Fascia goes in next and
The idea is to get the roof on as quick as possible
So you've got something to work under but then put our first couple of tile battens on
So the first pattern there you can see is a little bit bigger than the second one
It's called a Bellcast batten and what it does it kicks the first tile
So that the angle of the tile looks the same if you didn't kick the first tile
The first tile on the roof would look very flat, and it just wouldn't look right so you have a Bellcast batten
You should also have what I call an anti ponding board. This is just a piece of fibro
4.5mm fibro
Sits across the top of the first two battens and what that does it
supports
the sarking which goes on next and just
stops it from sagging near the gutter which means that any moisture that runs down here
Well, then once it gets to here will definitely run off
into the gutter
then our tile battens to take our Roof and
Our roof tiles go on there
So that's the first
stage of
the Brick veneer sub on ground
section in the next video. I'll take you through the actual bringing up the Brickwork and
finishing all that off and the how the insides fitted out
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