Moving cold water tank in loft

[chriskent]

Hi, i currently have a cold water tank in the centre of my loft above the landing walls that i would like to move to the side as its in the way. I understand the concept of having supporting walls to support the heavy load of the tank but need on advice on an idea i have. The tank currently sits on 20mm plywood which then sits on 2 x thick wooden beams, these 2 beams then sit on top of 2 x hanging beams. This is obviously the best place in terms of support, not so much for accessibility. My question is this, is it ok to put the water tank on 20mm plywood which sits on the 2 x thick wooden beams which then sits across multiple joists above 1 supporting wall? Will the joists hold the weight of a 50 gallon tank? I have attached some crudely made illustrations to show where i would like to put it.


Existing Setup



New Setup

Many thanks, Chris.

 

[lame plumber]

first drawing looks more safe than second in my opinion, all depends on joist thickness and supprts as to whether you get a cold shower overnight one day.

 

[PlumbBobBob]

i would double up the strengthening timbers so you have a double crossed frame to put the ply on, if you get my meaning.

 

[helpsy]

I think regs state 350mm between supports and 150mm from edge of board to tank.

 

[chriskent]

Thanks for the replies so far guys,

lame, i do agree that the existing setup looks more secure, was just hoping to make some more room

steveb, do you mean 2 timbers next to each other, one set on each side?

Helpsy, thanks for this, will make sure that i measure up correctly.

I will also do some measuring of the joists tonight and upload them here for more advise.

Again, thanks so far, Chris.

 

[PlumbBobBob]

chris, no i mean two timbers across the beams and then two the other way on top to help spread the weight

 

[chriskent]

Ah, i see, so like 3 tiers - joists / 1st timber level at 90 degree / 2nd timber level at 180 degree.

 

[Bhoydavid]

Seems like a hot of hassle just to move a tank. Why do you need it moved? What's it so badly in the way of?

Have you you thought about a breach?