ADDING EXTRA BAY ONTO EXISTING BUILDING

[skidless]

I am thinking of adding an extra bay onto an existing building , the current building is 45 x 30 in 15ft bays was wondering
if it is possible to add a 20ft bay instead of another 15ft , any advice is welcome.

 

[upnortheast]

Don`t see why not, as long as you size the steel & purlins correctly

 

[Mur Huwcun]

As said it all depends really on the existing gable end frame dimensions. Going 6m bay on 7*4 RSJs would be pushing it!!!!

 

[mo!]

We had a new shed built last year with 20 foot bays at the ends and 15 foot in the middle.

 

[vantage]

New shed steelwork delivered today, 1st bay 20’, then 12 number 15’ bays.

 

[tomlad]

Is one , 15 ,20 more cost effective than tuther.
In regards to my mythical building thats bin on plans for a WHILE , if the finished was basically 45 x 20 ish if another similar size was more efficient then that would be fine. Or is this a piece of string questions.

 

[Paul E]

Most things are possible...... but probably be better off putting 2 x 15' on and having MORE ROOM!!!

 

[jamesy]

Is one , 15 ,20 more cost effective than tuther.
In regards to my mythical building thats bin on plans for a WHILE , if the finished was basically 45 x 20 ish if another similar size was more efficient then that would be fine. Or is this a piece of string questions.

A friend priced up a shed using 15’ bays & 20’ bays. The bigger timbers required for 20’ bays actually made the 15’ bay shed cheaper.

 

[Mur Huwcun]

A friend priced up a shed using 15’ bays & 20’ bays. The bigger timbers required for 20’ bays actually made the 15’ bay shed cheaper.

Plus the rafters and stanchions usually need to be heavier aswell. Only real benefit of 20foot is ease of access on a machinery type shed etc, you can back two tractors/machines into each bay

 

[tomlad]

I can understand what ur both saying cheers

 

[mo!]

20ft will be faster to put up, and zed purlins will be similar price on 20ft surely.

 

[v8willy]

Plus the rafters and stanchions usually need to be heavier aswell. Only real benefit of 20foot is ease of access on a machinery type shed etc, you can back two tractors/machines into each bay

Can also put a bridge across 2 15's to give a 30' opening, have a 5 bay here with 2 bridges.

 

[Mur Huwcun]

Can also put a bridge across 2 15's to give a 30' opening, have a 5 bay here with 2 bridges.

Yes they look ideal, no idea how much you need to up the spec on stanchions though!!!

 

[mo!]

Yes they look ideal, no idea how much you need to up the spec on stanchions though!!!

It won't be much more as you are saving on a post in the middle.