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VladTepes
25th October 2005, 09:45 AM
Has anyone got a table / comparison . method of calculating the weight of alloy chequer plate ?

eg what would the weight of 1 square metre (1m x 1m) of chequer plate in various thicknesses - 2.5mm, 3mm, 5mm, 7mm etc.

I ask as I am thinking of using it for a floor in a camper trailer (to replace plywood (waterproofing is the issue here) IF I can get equivalent strength for less or equal weight and also for the floor of a Ute tray.

Additionally, perhaps a way of calculating what thickness of chequer plate is required to carry a certain load (eg what to use for a Ute tray, what to use for a sleeping platform, etc).

Thanks.

one_iota
25th October 2005, 10:09 AM
Vlad

Here is a link to the first part of the request:

http://www.australwright.com.au/Products/S...Tread_Plate.pdf (http://www.australwright.com.au/Products/Specifications/Aluminium/Aluminium_Tread_Plate.pdf)

DEFENDERZOOK
25th October 2005, 10:11 AM
<span style="color:blue">the strength is achieved by bends and creases....



what i can offer in the way of info is that aluminium is about half the strength of steel and around one third the weight.....

therefore....if you use aluminium twice the thickness you will have the same strength and only two thirds the weight...</span>

VladTepes
25th October 2005, 11:47 AM
Thanks OI - good link.

If only I knew hopw much the plywood sheet in the back of the trailer weighed, and what strength of alloy I would need to replace it.


(It's a bit wet in the trailer today - perhaps that will be fixed by a bit of canvas sealant.

kaistuff
25th October 2005, 12:10 PM
Originally posted by VladTepes
Thanks OI - good link.

If only I knew hopw much the plywood sheet in the back of the trailer weighed, and what strength of alloy I would need to replace it.


(It's a bit wet in the trailer today - perhaps that will be fixed by a bit of canvas sealant.


Have a look at boral

http://www.boral.com.au/brochures/orders/d...%20Sheets&scr=1 (http://www.boral.com.au/brochures/orders/default.asp'site=&company=Plywood&AUD=&nodes=IC:Plywood&toggleItem=brochures&menuitem=plywood&category=116&c_name=Hancock%20Plywood%20Technical%20Specificati on%20Sheets&scr=1)


may help

VladTepes
25th October 2005, 12:25 PM
nah, cant find any mention of weight on there.

one_iota
25th October 2005, 01:00 PM
Vlad

Structural plywood has an approximate density of 630kg/m3

A sheet of 15mm ply 1.2 x 2.4 weighs in the order of 27 kg.

You could always use marine ply if weather resistance is required?

abaddonxi
25th October 2005, 01:06 PM
Have you considered painting the plywood with a waterproofing paint - there are a whole bunch of products for bathroom and roof waterproofing. Many of them are water based, you buy small amount of two colours to make sure it is really waterproof, then lay carpet or such over the top.

Aluminium is noisy, and scratches stuff, and scratches easily itself.

And if it is the base of the trailer, just think of all the stone noise.

Cheers

Simon.

abaddonxi
25th October 2005, 01:08 PM
And as soon as you get it in it starts to shed dusty stuff, black all over your hands and your bags and the rest of it.

Unless you buy anodised.

Now that looks sweet.

But then the anodising scratches off and you're back to the black dust.

You can tell I'm a big fan of chequerplate, eh?


Cheers

Smion

VladTepes
25th October 2005, 01:44 PM
when you say use 2 colours of paint on the plywood i presume you mean one coat over the other and see if it bleeds through when wet ?

abaddonxi
25th October 2005, 02:17 PM
Yeah, that's the trick.

Of course I can't remember the name of the stuff now. It goes on really thick and ugly, but from the pack details, you can literally use it to keep water in. One of the designs is for relining old water tanks.

I've been thinking it might also be good for making a water tank to keep on the floor. You'd be able to make the tank out of plywood with this paint lining it. You could make a lid - sealable with a cured silicon seal, the whole thing would be cleanable and much more flexible than those stainless or aluminium tanks. Hate the idea of a sealed water tank that you can't get into and scrub out.

Cheers

Simon.

abaddonxi
25th October 2005, 02:24 PM
Ah, just to clarify the paint thing. The idea is that you paint on a white coat, then a black coat so that you ensure full coverage. This is only for full waterproofing membranes or tank linings where you need to have a certain guaranteed depth of paint/membrane so that there is no chance of leaks.

In your case, there isn't going to be a huge worry if there are a couple of pinholes.

Cheers

Simon.

RoverOne
26th October 2005, 02:16 AM
Originally posted by abaddonxi
Yeah, that's the trick.

Hate the idea of a sealed water tank that you can't get into and scrub out.

Cheers

Simon.

You can't get much cleaner water than gal water tank water that never sees the light of day. Algae only grows in light and never a problem in most tanks.

Alloy tanks over time react to some minerals & scale from this chemical reaction but should not be a health hazard only a taste hazard, like poor quality plastic containers, real good stuff has no taste.

Periodic use of CLC cleaner should with regular flushing keep things spot on inside tanks. Plastic should be dark in colour not clear or white for long periods.

Cheers
Bryce

DEFENDERZOOK
26th October 2005, 06:01 AM
<span style="color:blue">what is clc cleaner....?</span>

VladTepes
26th October 2005, 10:27 AM
calcium, lime and ? cleaner.

abaddonxi
26th October 2005, 01:11 PM
Could be wrong but I think he means clr which is calcium, lime, rust cleaner.

Cheers

Simon.

VladTepes
26th October 2005, 01:23 PM
i concur. as it happens i just saw some in my cupbaord style_emoticons/<#EMO_DIR#>/laugh.gif

DEFENDERZOOK
26th October 2005, 08:51 PM
<span style="color:blue">hey vlad....whats it taste like.....?</span>

one_iota
26th October 2005, 08:56 PM
[quote=DEFENDERZOOK]<span style="color:blue">hey vlad....whats it taste like.....?</span>

Thai tooth paste?

VladTepes
27th October 2005, 10:54 AM
[quote=DEFENDERZOOK]<span style="color:blue">hey vlad....whats it taste like.....?</span>

WTF :?: :?