Large Single Span Building

[AlfM]

How wide can ag buildings go in a single span? At what point do the steel sizes and costs start to scale up massively?

 

[Forever Fendt]

How wide are you thinking,We have done spans up to 140ft but it depends what you are using it for and the height required ,Up to around 90ft does not have a big impact on price as longer rafters do not need extending trailers for delivery and this adds on a fair bit to cost

 

[AlfM]

How wide are you thinking,We have done spans up to 140ft but it depends what you are using it for and the height required ,Up to around 90ft does not have a big impact on price as longer rafters do not need extending trailers for delivery and this adds on a fair bit to cost

Thanks. Got a muck lagoon they’ll want us to put a roof over one day and just wondering whether it’ll be possible. So long as the stanchions can go on banks they’ll be no need for much height at all but your 140 ft would be a minimum! Ideally a bit more would be good. What size rafters did you use for that? Good point on delivery problems!

 

[Forever Fendt]

Thanks. Got a muck lagoon they’ll want us to put a roof over one day and just wondering whether it’ll be possible. So long as the stanchions can go on banks they’ll be no need for much height at all but your 140 ft would be a minimum! Ideally a bit more would be good. What size rafters did you use for that?

610 x 229 x125 30mm end plates haunches 4.4m long

 

[MD @Minshall Buildings]

If it helps the EA EPR6.09 sector guidance note Appendix 9 states that "All existing slurry storage MUST be covered by 2020"...…..not sure how they will police this, but that seems to be the current position by EA?

 

[Forever Fendt]

If it helps the EA EPR6.09 sector guidance note Appendix 9 states that "All existing slurry storage MUST be covered by 2020"...…..not sure how they will police this, but that seems to be the current position by EA?

Probably build it in to cross compliance and penalise subsidy

 

[AlfM]

If it helps the EA EPR6.09 sector guidance note Appendix 9 states that "All existing slurry storage MUST be covered by 2020"...…..not sure how they will police this, but that seems to be the current position by EA?

What are your thoughts on how wide a span is practical?

 

[MD @Minshall Buildings]

Depends on a few factors, location, design, loadings etc. We did National dairy centre at university of Nottingham which was approx.160ft. Perhaps a site visit next time we over your way may help?

 

[Badshot]

All slurry stores must be covered !!
I've seen some massive lagoons over the years, can't see how it'd be possible on some of them
Who dreams up these bloody rules, is a couple foot of direct rainfall a year really going to make any difference?

 

[Steevo]

All slurry stores must be covered !!
I've seen some massive lagoons over the years, can't see how it'd be possible on some of them
Who dreams up these bloody rules, is a couple foot of direct rainfall a year really going to make any difference?

Everyone's out to make their job more complicated and more important to justify their existance. As per my other post earlier.....it's no wonder farmers' mental health is suffering.

 

[Mur Huwcun]

610 x 229 x125 30mm end plates haunches 4.4m long

Waw, just by a quick calculation that’s around 3 tonne per rafter!!! Haunches from same beam? That’s going to be half a tonne for two haunches!! Seen plenty industrial buildings using similar to 610 UBs but not such a span as they mostly go multi ridge!

 

[Forever Fendt]

Waw, just by a quick calculation that’s around 3 tonne per rafter!!! Haunches from same beam? That’s going to be half a tonne for two haunches!! Seen plenty industrial buildings using similar to 610 UBs but not such a span as they mostly go multi ridge!

If i can figure out how to take a phone picture of a photo i will put one on here

 

[dannewhouse]

you can join rafters if transport is a massive issue, problem is its additional cost of making and designing the joint.

im sure someone not long ago had a project where they wanted to cover 100ft in width they had 3 ideas,
2 50ft spans with valley gutter
100ft clear span
100ft propped span (ie stations in the centre of the peak)

im sure the person said clear span came out cheapest then 2 50fts then propped, I think there was around 4k difference in 100ft to 2x 50ft but cant remember?

real good idea making all slurry stores covered, could divert the downpipes straight into lagoon, that should be about right to wet it up for umbilical wont it?

 

[Forever Fendt]

Not the actual rafter but these were 70 ft but a lighter 610 section with 838 posts

 

[Forever Fendt]

you can join rafters if transport is a massive issue, problem is its additional cost of making and designing the joint.

im sure someone not long ago had a project where they wanted to cover 100ft in width they had 3 ideas,
2 50ft spans with valley gutter
100ft clear span
100ft propped span (ie stations in the centre of the peak)

im sure the person said clear span came out cheapest then 2 50fts then propped, I think there was around 4k difference in 100ft to 2x 50ft but cant remember?

real good idea making all slurry stores covered, could divert the downpipes straight into lagoon, that should be about right to wet it up for umbilical wont it?

Sending steel north from here as far as Newcastle is cheap on extending trailers as they will have run sections down this way ,Newcastle costs us £340 , Cambridge was £900, Splicing the rafters needs avoiding if you can and a mill order for specific lengths takes about 10 weeks but you can have the length you want with no waste up to 22m

 

[Steevo]

you can join rafters if transport is a massive issue, problem is its additional cost of making and designing the joint.

im sure someone not long ago had a project where they wanted to cover 100ft in width they had 3 ideas,
2 50ft spans with valley gutter
100ft clear span
100ft propped span (ie stations in the centre of the peak)

im sure the person said clear span came out cheapest then 2 50fts then propped, I think there was around 4k difference in 100ft to 2x 50ft but cant remember?

real good idea making all slurry stores covered, could divert the downpipes straight into lagoon, that should be about right to wet it up for umbilical wont it?

Done something here recently....though I wasn't the person you were referring to.

100' clear span wins hands down for design, simplicity and ease of use.

Nice idea about diverting the downspouts - seems logical to use the inbuilt soakaway...!

 

[dannewhouse]

Sending steel north from here as far as Newcastle is cheap on extending trailers as they will have run sections down this way ,Newcastle costs us £340 , Cambridge was £900, Splicing the rafters needs avoiding if you can and a mill order for specific lengths takes about 10 weeks but you can have the length you want with no waste up to 22m

agree about avoiding splicing, but it is possible, £1000 transport is £100 per rafter on 10 rafters so probably still cheaper than a splice anyway. + so much better without splice.

downpipe idea is about the logic of EA, most people I know have downpipes in for umbilical except last winter!

 

[AlfM]

Sending steel north from here as far as Newcastle is cheap on extending trailers as they will have run sections down this way ,Newcastle costs us £340 , Cambridge was £900, Splicing the rafters needs avoiding if you can and a mill order for specific lengths takes about 10 weeks but you can have the length you want with no waste up to 22m

Must need some decent site access for rafters 22 m long? Not sure what we'd ever do then as I'd guess we'd need minimum 45 m clear span unless the stanchions went further down the slope of the banks in the sh1t and then had some cantilevers/lean to off the main. As it is with the 45 m it would be stanchions on the slope of the bank so need a fair lump of concrete but that is above the line of the muck. Perhaps large lumps of concrete, wire ropes and flexible covers might be the answer. What's your best guess at a 45 m x 45 m clear span building cost?!?

 

[dannewhouse]

£60k for the kit???

 

[Pieces_of_Eight]

How many cubes of rainwater could be collected?

How much would a foot of snow weigh?