So I'm gonna build a deck off the side of this house, it's gonna be
Five metres wide and six metres long and it going to be s pretty simple design. It's just going to be a row of
Piers or two rows of piers went near the house one at the end of the deck
Bearer on top of the Piers
then our joists and
flooring on top, but
What I want to know at the moment is can I get a joist that's going to run this distance. Which is five metres
So the things we need to know is the span you need so again 5 metres
I also need to do it to know how far apart
Each joist is going to be so I'm going to work with a 300mm
center to center spacing
For these joists, so knowing the span and spacing. I'm now going to go and use Hyne Timber Design 7.5
To work out the actual size of the joists that we need
In order to download Hyne Timber Design 7.5 all you need to do is type
Hyne.com.au into your address bar
And that will take you straight to the Hyne website
scroll down to the Hyne design software click on get Hyne in the Timber Design 7
scroll down to the download area
click on download now and your download will start
So once you've downloaded and installed the software you'll find the shortcut on your desktop
And you can just double click on that to open up the software
Now if it's your first time coming into the software you'll it be asked to register
But once you've been through the registration process you'll find a screen that looks something like this
So we'll just go quickly through the screen and explain it to you
Obviously all your file details it in the left hand side here
Across the top you have your project data. So this is a screen if you're doing a large job and enter in your project details
for what we're doing. We won't need to look at that
It's simple design. We'll have a look at that in a moment. That's where your go in and just work out individual members
your product control so you can actually limit the types of the the number of products you're looking at in there
Span tables will have all to that as well. You can actually
go in and see what's
spans different types of Timber will do
You also have a bracing calculator and a tie down calculator
You have a link to the Hyne assist website
The save button and an exit button here and the other ones you really need to know about if you go into the help tab
You'll see you'll have your edit registration area so you can go back and edit that information. You're put in when you registered
and
go to your help file if you need any more assistance with
the software
okay, so the first thing we have though is going to go to a simple design and
We're gonna have a look at the we are going to make sure we've got joists and rafters selected
And we had to make sure we've selected deck joist in this particular example
We're gonna make sure we've selected our span which is five meters, and you can just type that in we can get up and down
till you get to five meters and
We're going to make sure that we've selected one
Span you can do two three as many as you want
But in this case, we're gonna go for a single span
You can also enter cantilevers
Left and right on your job, and you can change the parameters just through these centreline spans if you want
Okay, but we're gonna get with this set up
Course we've selected deck joist. This is already prefilled
So we've got decking no ceiling floor live Balcony loads
We've preset our deck joists at 300, but you could go whatever spacing you want. I'll show you the implications of that later
no bottom Edge restraint
So down here we can clear our settings, and then we select the timber we want to use
So in this case I want to use high in T3 Green
MGP 10 and 12
Because it's outside. I want to make sure I've selected H3 timber
outside above ground
once I've selected all those I can go to design at Deck joists 1 and
I'll get the results for those if you've got no results
Then there's no timber available you may need to change your parameters just
As an example, I'll take this spacing back to 450
And hit design again, and I only get one choice
Because we're putting the joists closer together we get a few more choices
Okay, so there's the three types of timber we can use
We can look at them a bit closer. I would sort them by money. Which is this button over here?
So it puts the cheapest timber at the top
And the other thing I would look at is the DL
And over go for the smallest one that will give you the stiffest deck the less deflection
Will this bounce in the deck so I would be inclined to use?
240 x 45
MGP 12, but that's totally up to you. So that's the way we can use the simple design
Now the other option is we can use span tables so go to Span tables
Again, make sure we've selected joists and deck joists
Down the Right-hand side here. We want to make sure we select our timber types
So I'm gonna go
T3 Green MGP 10 and 12 I only want to look at a single span example
And that's pretty much all the information. I need to know then I can run the table
So this will bring out bring up a report which I can print and if I get into the span tables I can find
here's all my different types sizes of timber and the appropriate span at the Joist spacing, so
You can see there
My 240 x 45 I could actually span
5.3
so I could make my deck a little bit bigger at
very little expense
or if I wanted to stay with my 5 meters, I could get back to a
400 spacing so I might save myself a joist
That's the MGP 10 report and they've got down further. I'll see the MGP 12
Ok so if i wanted to go MGP 12 I could go to 5.6 or I could open up my spacing to
480mm and I could get a 5.1 wide deck
So there you go. That's how we use
span tables and simple design in Hyne Design 7.5
for our deck joists
remember High-end T3 Green is backed by an up to 25 year Guarantee and
Here are a few tips and requirements to ensure the deck joists last as long as possible