Venting for cattle

[biggmw]

Afternoon all

Was listening to a talk the other day regards ventilation for cattle sheds.

All made a lot of sense regards how cattle will perform etc.... and bedding usage... which is ever more pertinent this year.

So.... as you do..... came home and started studying our sheds. .....

One shed will need to have ridge off and some type of open top fitted to meet criteria...... another the same......walls I can sort out......

Now the problem ones....

Two lean to sheds...

No1 leans on back of workshop.... feedrail under overhang at outside edge.... so I have actually created an air catch at workshop wall......

Any ideas regards opening vents along this roof.... bearing in mind they would be half way up the roofline

No2 the same senario but the rear wall has spaceboards at the top.... into another shed.... so should be OK if I allow the top shed enough open ridge to compenate the cattle in both sheds?

All this rambling and cudding over is based on 0.1m sq outlets per animal(adult).

Should say sheds don't feel stuffy or hot as a rule.....

 

[dannewhouse]

smoke bomb test them before any costly alterations?

for lean to No 1 create a drop between sheets? basically lift the higher sheets and stick a battern in (might be very hard to do to existing though) or create "gap sheets" by basically cutting the lap off every joint so there is say a 20mm gap between each set of sheets?

no 2 possibly be ok as long as main shed ridge gap is ok they do a thing called an eaves gap where basically your cladding stops say 1ft below your eaves purlin

I read something about sizing inlets and outlets for airflow which was 5cm ridge opening for every 3m of shed width and inlet area should equal 4x outlet ie gaps in Yorkshire boarding at back should = 2xridge gap and front should = 2x ridge gap.

 

[Pan mixer]

I have a similar shed, expensive adviser told me to take a 3 foot sheet (the top one in the lean-to) right out, install a gutter under higher roof.

Not done it yet.

 

[jed]

Put an angle grinder down ours years ago best days work I ever did.
Two slits down each sheet.
But be careful up there.

 

[biggmw]

smoke bomb test them before any costly alterations?

for lean to No 1 create a drop between sheets? basically lift the higher sheets and stick a battern in (might be very hard to do to existing though) or create "gap sheets" by basically cutting the lap off every joint so there is say a 20mm gap between each set of sheets?

no 2 possibly be ok as long as main shed ridge gap is ok they do a thing called an eaves gap where basically your cladding stops say 1ft below your eaves purlin

I read something about sizing inlets and outlets for airflow which was 5cm ridge opening for every 3m of shed width and inlet area should equal 4x outlet ie gaps in Yorkshire boarding at back should = 2xridge gap and front should = 2x ridge gap.

That's what we are thinking. Bit of planning how to do it mind.

I have a similar shed, expensive adviser told me to take a 3 foot sheet (the top one in the lean-to) right out, install a gutter under higher roof.

Not done it yet.

Not really wanting to open up as the back of the shed is bedded area. Need some thought.

Put an angle grinder down ours years ago best days work I ever did.
Two slits down each sheet.
But be careful up there.

Slit along the sheets? Top to bottom?

No problem up there as we put the sheds up....... when airflow wasn't really at the foreront of our thinking!!

 

[jed]

Not quite top to bottom about 4 ft long a big 6 sheet.
Later sheds we put the sheets on upside down this will leave a gap about5 to 10 mm between sheets