Strength of grain posts.

[Farmerdunk]

Our straw shed has upright posts of 305mmx165mm. Would these be strong enough to take concrete panels, say upto 3 metres? And then tin down. It currently has just the roof and no sides. To make it more weatherproof and maybe a wet shed at harvest.

 

[RWG Contracts]

Our straw shed has upright posts of 305mmx165mm. Would these be strong enough to take concrete panels, say upto 3 metres? And then tin down. It currently has just the roof and no sides. To make it more weatherproof and maybe a wet shed at harvest.

What size shed? Width and height

 

[Farmerdunk]

100ft 5x20ft bays, by 55ft wide. 25ft to
Purlins

 

[RWG Contracts]

Think I’d rather shutter the walls rather than panels

 

[Farmerdunk]

Ok. For what reason? Or would it be possible to use grain wall tin, say up to 10ft? Thanks

 

[grainboy]

Look at a comparative building, and assess steel size,
55 ft at 10ft depth is quite a load,
concrete panels transmit, load through posts, shuttered walls will absorb load, through the structure,
Answer to question, I would say no,

 

[grainboy]

I could show you a large store,
That was loaded to the gunnel’s,
Next morning the side posts had been pushed out a metre,

 

[Steevo]

I have a 75ft long by 50ft wide store with exactly those size steels, in 40kg/m. Panels are 2.4m high. Tipped by trailers and pushed up with a 3m pusher.

All steels are tied into the floor slab with hairpins which I think would help a lot.

Gable end steels are same dimensions but heavier gauge.

 

[Grass And Grain]

Sounds like risking it. How about putting another upright in halfway along each concrete panel.

 

[RWG Contracts]

Ok. For what reason? Or would it be possible to use grain wall tin, say up to 10ft? Thanks

you can put a footing in for the shutter wall and tie the bars into the floor slab. This way the wall is effectively freestanding and not relying on the shed holding the weight. With panels the steel is doing all the work

 

[RWG Contracts]

Sounds like risking it. How about putting another upright in halfway along each concrete panel.

 

[grainboy]

I’m taking down a grain wall next job, there would be some intermediate posts available,

 

[AlCapone]

Everything I was going to say has already been said

 

[HatsOff]

Get an engineer to do a check. The few hundred pounds on that is a lot cheaper than a failure.

 

[Doing it for the kids]

Did this last year.

Converted a straw shed to grainstore, now 4m tall but must be level filled.

Many chats later I instructed an engineer who after using half a rain forest of paper in calculations advised central steels between each leg and lots of tying in to floor.

Nearly binned him and went free style as they always factor in so much risk but choose not to when I compared steel sizes of that with another new GS we just erected. If it does go wrong we would be in a right pickle and not be insured.

It was a right faff but worth it now. Pm if you want his details, he may be able to nearly hit print and edit a few things for you!

 

[Lakesdigger]

Get an engineer to do a check. The few hundred pounds on that is a lot cheaper than a failure.

It'll be a no then as even if the steels were man enough they can't guarantee the concrete on the bottom of them.

 

[RWG Contracts]

It'll be a no then as even if the steels were man enough they can't guarantee the concrete on the bottom of them.

You could soon do some trial holes around the footings to see what they’re like

 

[HatsOff]

It'll be a no then as even if the steels were man enough they can't guarantee the concrete on the bottom of them.

Depends what is visible. They probably would recommend some additional concrete, possibly anchoring in some reinforcement round the back of the columns.

If the columns disappear under the slab then trial holes might be needed

Photographs from construction are very useful.

But if it needs reinforcing then it is what it is.

 

[quattro]

Our straw shed has upright posts of 305mmx165mm. Would these be strong enough to take concrete panels, say upto 3 metres? And then tin down. It currently has just the roof and no sides. To make it more weatherproof and maybe a wet shed at harvest.

I’ve a 120 x50 x 22 with 305x? I will look, and I’ve shuttered 8ft wall and put extra purlins 12in for side sheets and then put 8ft marine ply vertically above shuttered wall
(outside sheets come down to just under 8feet)
so probably 15.5 feet after allowing for overlap
and it’s heaped as high in middle as possible until it’s to the top of the side walls
not had a problem in 23 years (hope I’m not tempting fate)

 

[Doing it for the kids]

I’ve a 120 x50 x 22 with 305x? I will look, and I’ve shuttered 8ft wall and put extra purlins 12in for side sheets and then put 8ft marine ply vertically above shuttered wall
(outside sheets come down to just under 8feet)
so probably 15.5 feet after allowing for overlap
and it’s heaped as high in middle as possible until it’s to the top of the side walls
not had a problem in 23 years (hope I’m not tempting fate)

On the face of it that’s punchy.

Better made buildings and concrete 23 yrs back though!?