Waching daily Jul 3 2018

G'day and welcome back to Buildsum and in this video

I'm gonna have a quick look at a thing called Effective Cover and then i'm going to talk more about how we

Convert or how we work out how many lineal metres of a product we would actually need to cover a square metre

Now quite often when we work out

Estimating or working out estimates on materials it work things like walls and falls out in square metres

But some of the products are actually going to use like floorboards, which you can see here

a couple types of weather boards and

Even decking they come or you buy them from the hardware store in lineal meters. So we need to know how to work out

How many lineal metres of product would cover a square metre of

wall

Ok. So the first thing that we need to understand is effective cover, so we'll go back to our floor board

And say you brought a 70mm by 19 or 20mm floor board

Okay, so you can see it's 70mm from the outside of the tongue to the outside of the groove here

However, that would only when we put our next board in

That board this one here is only actually covering 65mm

So it has what we call an Effective Cover of

65mm and obviously different width boards are going to have different effective covers and

similar with our different types of weatherboard

So here's a weatherboard, which is 200mm over all but in this case, it only has an effective cover of 190mm

because when we but this board in

it's going to overlap that much and

There are other types. So that's a you know, a milled type with a board if you go to the flat boards

so this one's

230mm long

When we do our lap and in other videos, I've shown you how to work out the lap

but in this case when we do the lap we have

200mm left which is our effective cover

and

So they are all good because those ones were actually deducting or taking a bit off the actual length of the board

But also think about decking so this board our decking board is 70 mm

But when we put it in, we normally leave a gap, you know on average around 10mm

so this 70mm board actually has an Effective Cover of

80mm when we got to work it out so that lets us work out the gap as well

So that's effective cover its the actual

width or the actual distance that the board is covering on the wall, not necessarily the actual width of the board

So we need to know that so we can work out how many boards

there are in a square metre so

Let's have a look at a square metre. So this has metre long metre wide and

we had so

To work out our metres per square metre

We basically take one, which is the metre and we divide it by the effective cover

So for our first scenario our flooring boards

one metre

divided by 65mm or

0.065

metres sorry gives us

15.380, so that's 15 boards

going up that wall and

Each one of those boards if we made each one of those boards and meter long

That would give us 15 .380m

of

floor board to cover that square metre of

floor

So similarly with their our weatherboards

our first weatherboard was a hundred and

190mm wide effective cover

so one metre divided by 190mm is just 5.263 and

You can see there. I've got one, two, three, four five and there's our .263

so that's 5.263m of

weatherboard

per square metre of wall

our other weatherboard

Clapboard so that was 200 had an effective cover of 200mm

So one metre divided by 200 gave us five and then he can see one two, three, four, five and our decking

Was 80mm effective cover 80mm because of the gap between our 70mm board

So one metre divided by 80 gave us 12 and a half

boards

All of meter long, so it gives us 12.5m of decking board

square metre of wall

So, there you go, I hope that gives you a little bit of an understanding of effective cover and how to work out

How many metres of

Board we would need to cover a square metre of wall

which will then help you to work out the total amount of our

Material that you would need for your for your job your floor or your wall

G'day, I'm back

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For more infomation >> Effective Cover and converting Square Metres to Metres - Duration: 6:05.

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