Pole Barn - Why not use center post?

[gabeancounter]

Bearcreek,
I look forward to seeing the truss design. From my research into trusses I think a 28' clear span truss with 1' overhang will take advantage of 16' lumber with only one joint on the bottom chord and no joints on the top chord.

Bobrip,
I am certainly leaning towards the trusses. Would really like to try and build them myself. I could see three rows being productive. I am sure I will be glad that everyone has advised me of going that direction.


Has anybody used the standard pressure treated 2x6's laminated for post? Adding the asphalt enough protection?

 

[gabeancounter]

I am sure everyone has seen these truss designs by Midwest. I don't understand why it is saying both 4/12 and 5/12 use a 16' top chord?
Any problems with this design using 2x4x16's? 24" on center?

 

[Green_in_Michigan]

Your talking about 10' bays ... are you planning the rafters 10 O.C. ? Use a double plate and you could go with 2x8 rafters 5' O.C. and use 2x4 purlins

2x8 rafters to span 30 feet?

 

[Green_in_Michigan]

Save anything building trusses yourself?

Don't even consider it, you are not qualified to build a truss.

 

[gabeancounter]

Don't even consider it, you are not qualified to build a truss.

lol...why is that?

2x8 rafters to span 30 feet?
No. I was talking about running from outside post to center post -15'. Thanks

 

[blueriver]

2x8 rafters to span 30 feet?

The building is 30' ... so basicly, without exact calculating ... a run of 15' ... so I see no need to go over a 2x8 ...

 

[blueriver]

Don't even consider it, you are not qualified to build a truss.

Well building a truss is not that difficult ... in fact I think even you could do it ... follow a drawing .. available online ... use the first one for a pattern and build the rest.

 

[blueriver]

4/12 pitch the top chord is 15'10" or use a 16' 2x8 and BANG your done !!

 

[blueriver]

I'm sorry ... you will have to calculate the webbing and layout the plywood gussetts ...

 

[blueriver]

4/12 pitch the top chord is 15'10" or use a 16' 2x8 and BANG your done !!

I am sure everyone has seen these truss designs by Midwest. I don't understand why it is saying both 4/12 and 5/12 use a 16' top chord?
Any problems with this design using 2x4x16's? 24" on center?

4/12 takes 15'10" and a 5/12 takes 16'3 ... they may be holding the 5/12 in on the bottom web ... on each side, I doubt it ...but they maybe doing it to save from going to 18' lumber