Corrugated Galvanized Steel Roofing Sheets on concrete sectional garage... help needed... SIDEWIDER

[a1]

I am looking at buying corrugated Galvanised Steel? Roofing Sheets, ideally with Anti-Condensation backing, for my concrete sectional garage.

Some of you may remember it here:

http://www.talk.electricianforum.co.uk/general-chat-area/11189-concrete-sectional-garage-help-identifying-manufacturer-model.html

I just wanted to check on thickness recommendations, overhang length, etc, anything that you know of really.

There appears to be a lot of 0.50mm thick sheets around. But I am looking for some that are cut to size in the Neath, Port talbot or Swansea areas, to save on or get low cost delivery costs.

I know Hancock & Brown, Swansea - sell tham (not cut to size) and they also sell them in Roma Roofing Supplies in Hirwaun (I have purchased from these in the past and they would be my very last resort - if that).

I also need the ridge capping too. What are the degrees on these garages (made possibly in the 1970's?) 22.5

 

[Sidewinder]

Get the wall height & the ridge height & we can calc the angles

 

[a1]

It's sitting on an uneven base mate.

Levelled it as best we can though.

But I wll have a look as soon as mate.

 

[a1]

Approximate sizes are:

Wall height: 2130mm

Ridge Height: 2580mm

Mate.

 

[Sidewinder]

OK,

Forgot will need the distance between the walls below the ridge too!

Sorry, lot on my mind!!!

 

[steptoe]

your angle will be on the 3.4.5 rule admin,

its simple math.

didnt you learn anything at school?

:slap

 

[a1]

What's school, Steps?

I did take the measurement of the garge width mate - but I have lost it. I will do it again Tomorrow.

I took the measurements from the front (inc posts) - and the sides (panel to panel).

I'll also get a piece of 6mm Ply and trace around the Metal rafter that is in there. I will do a continuation of this once I get something to work from (the rafter doesn't come to a point, if you know what I mean?) then we will see how close you are. But looking at it with my trusty eys - I would say it is 45

 

[Apache]

Admin - take a look at Coroline bitumen sheets. Easy to cut and work with. Easy to fix. Less condensation. Quiet when it rains.

Not sure why you'd want steel sheets. That said they are easy to cut with a grinder or an 'Evolution' circ saw.

 

[a1]

I need strong corrugated sheets, Patch...

1. To hold my 17.5 stone of pure muscle.

2. I don't trust the kids from the next estate.

Those coroline ones are expensive. over

 

[Sidewinder]

How far apart are those walls then Admin?

 

[a1]

Haven't done it yet Sidey. Will do it soon.

 

[a1]

The width (at widest part - posts) is 2925mm.

So we have:-

Sides: 2130mm

top of front apex: 2580

Width: 2925

Approx.

 

[Sidewinder]

Angle between horizontal line across top of walls up to the roof slope approx 17 deg.

Angle at apex from roof slope one side to roof slope the other inside approx 145 deg.

Accuracy depending on info provided!

 

[a1]

I worked it out as roughly 20

 

[Sidewinder]

Well,

I worked on a 450 ridge ht from top of awall 2580-2130=450 yeh

Width across walls 2925

Ridge central so ridge point is mid point between walls, this is 1462.5 from a wall

This gives a rt angle triangle of vertical side 450, horizontal side 1462.5

Which ever angle you want you don't have the hyp so you need to use tan.

Actually tan^-1 as you have the sides

For angle between h line across tops of walls inside roof up to roof slope you have

tan^-1 (450/1462.5) = about 17 deg

For half the angle of the apex remembering you have dropped a v line down from apex to intersect with h line across tops of walls

tan^-1 (1462.5/450) = about 73 deg

Thus apex included angle is twice this at 145/146 deg

I have rounded all to the whole degree so there is a bit of rounding error.

If you check the angles in half the roof you have 17+90+73=180

In the whole roof you have 17+17+73+73=180

So it seems OK

What's the problem?

 

[a1]

What's the problem?

Can't find a good supplier.