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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500236
03/25/19 02:09 AM
03/25/19 02:09 AM
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Joined: Dec 2006
Posts: 17,379
Coeur d' Alene, Idaho
James
"Minka"
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"Minka"
Joined: Dec 2006
Posts: 17,379
Coeur d' Alene, Idaho
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I don't know the answer, but don't forget to consider possible wind and snow loads.
Jim
Forum Infidel since 2001
"And that troll bs is something triggered snowflakes say when they dont like what someone posts." - Boco
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500237
03/25/19 02:21 AM
03/25/19 02:21 AM
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Joined: Jul 2017
Posts: 2,741
Ohio
Willy Firewood
trapper
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trapper
Joined: Jul 2017
Posts: 2,741
Ohio
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With 4x4s no farther than 8’ on center. Since there will be nothing securing them from shifting at the base, they should be in a concrete footer or fastened to a sonotube with an appropriate bracket.
FRAC LIVES MATTER
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500240
03/25/19 02:35 AM
03/25/19 02:35 AM
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Joined: Jun 2013
Posts: 1,313
Indiana
kyron4
OP
trapper
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OP
trapper
Joined: Jun 2013
Posts: 1,313
Indiana
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I was going to sink them 30" deep and back fill with concrete, but I just looked up sonotube and like that Idea better. Are then just as stable and solid as sinking it in concrete ?
Last edited by kyron4; 03/25/19 02:43 AM.
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500285
03/25/19 06:01 AM
03/25/19 06:01 AM
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Joined: Sep 2012
Posts: 1,980
New York
proratman
trapper
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trapper
Joined: Sep 2012
Posts: 1,980
New York
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I was going to sink them 30" deep and back fill with concrete, but I just looked up sonotube and like that Idea better. Are then just as stable and solid as sinking it in concrete ? Anytime that you bury any wood into concrete, it will rot out quickly. The concrete will act like a water proof sleeve and not allow any water that drains down inside to escape. Then the water will be absorbed into the wood.
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500300
03/25/19 06:29 AM
03/25/19 06:29 AM
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Joined: Dec 2006
Posts: 31,930
williamsburg ks
danny clifton
"Grumpy Old Man"
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"Grumpy Old Man"
Joined: Dec 2006
Posts: 31,930
williamsburg ks
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old shade tree way before ready made brackets etc was to dig a 10 inch post hole about two feet deep.. frame the top of the hole with 2x4's making a 16 inch square. drill all the holes and set all the forms leveling them to each other. pound 3 pieces of rebar into the dirt in the hole with the top of it just below the top of the form. A fourth piece of rebar extends above the form about 4 inchs and is centered. put some hog wire panel or other steel in the 2x4 frame. do the frames with sac crete mixed up in a wheel barrow. after a few days you can drill a hole in the end of your post and set it on the rebar.
Those who would give up essential liberty, to purchase a little temporary safety, deserve neither liberty nor safety. Benjamin Franklin (1706-1790)
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500304
03/25/19 06:31 AM
03/25/19 06:31 AM
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Joined: Dec 2006
Posts: 31,930
williamsburg ks
danny clifton
"Grumpy Old Man"
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"Grumpy Old Man"
Joined: Dec 2006
Posts: 31,930
williamsburg ks
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I think that people selling stuff have over complicated stuff and often you get inferior results. Trusses instead of rafters or joists for example
Those who would give up essential liberty, to purchase a little temporary safety, deserve neither liberty nor safety. Benjamin Franklin (1706-1790)
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Re: Post spacing for porch roof ?
[Re: tjm]
#6500307
03/25/19 06:37 AM
03/25/19 06:37 AM
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Joined: Feb 2013
Posts: 1,311
Northern Illinois
huntrap247
trapper
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trapper
Joined: Feb 2013
Posts: 1,311
Northern Illinois
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Doesn't mater what size the posts are the spacing is governed by beam size and roof load, roof slope plays a part in the loading of the beam.
Never place concrete next to wood.
Rule of thumb, a beam can span about one foot for every inch of depth. 2x12 doubled can span 12' normally. 2x4 doubled can span 4' etc. with just rafter load.
4x4 don't make good posts because if they are over 6' tall they will bend/bow under load. 6x6 is preferable and when looking at the end try to pick post timber that has the heart centered in the post- it will not warp/bow as bad (if at all ) as a post with heart on one side and sap on the other. Follow this advice.
Some people refuse to see the truth when you bludgeon them over the head with it.
Member FTA-17I NTA
NRA Patriot life member
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500451
03/25/19 08:49 AM
03/25/19 08:49 AM
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Joined: May 2012
Posts: 5,912
michigan,USA
seniortrap
trapper
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trapper
Joined: May 2012
Posts: 5,912
michigan,USA
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4x6 treated is as strong generally needed on 8 foot spans.
Vietnam--1967 46th. Const./Combat Engineers
"Chaotic action is preferable to orderly inaction."
"After the first shot, all plans go out the window!"
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Re: Post spacing for porch roof ?
[Re: tjm]
#6500463
03/25/19 09:02 AM
03/25/19 09:02 AM
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Joined: Jan 2008
Posts: 9,899
Alaska and Washington State
waggler
trapper
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trapper
Joined: Jan 2008
Posts: 9,899
Alaska and Washington State
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Doesn't mater what size the posts are the spacing is governed by beam size and roof load, roof slope plays a part in the loading of the beam.
Never place concrete next to wood.
Rule of thumb, a beam can span about one foot for every inch of depth. 2x12 doubled can span 12' normally. 2x4 doubled can span 4' etc. with just rafter load.
4x4 don't make good posts because if they are over 6' tall they will bend/bow under load. 6x6 is preferable and when looking at the end try to pick post timber that has the heart centered in the post- it will not warp/bow as bad (if at all ) as a post with heart on one side and sap on the other. Refer to this for starters. Then look at your local codes for snow and wind load etc. Of utmost importance is your header size and the load on the header. Post spacing is immaterial unless you know these other factors.
"My life is better than your vacation"
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Re: Post spacing for porch roof ?
[Re: kyron4]
#6500483
03/25/19 09:18 AM
03/25/19 09:18 AM
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Joined: Aug 2011
Posts: 47,957
james bay frontierOnt.
Boco
trapper
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trapper
Joined: Aug 2011
Posts: 47,957
james bay frontierOnt.
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If you put posts in the ground,slap the creosote to them,and fill hole with pea gravel for drainage.
Forget that fear of gravity-get a little savagery in your life.
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Re: Post spacing for porch roof ?
[Re: tjm]
#6500511
03/25/19 09:45 AM
03/25/19 09:45 AM
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Joined: Dec 2006
Posts: 22,039
SEPA
Lugnut
trapper
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trapper
Joined: Dec 2006
Posts: 22,039
SEPA
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Well, you said porch and that means you have floor to hold up the posts, but then you say dig & concrete ect. you might look for these at your lumber place- they'll hold up as much as your beam on solid soil. ![[Linked Image]](https://cdn.rona.ca/images/71005154_M.jpg) It is against code to use those in Pennsylvania.
Eh...wot?
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Re: Post spacing for porch roof ?
[Re: tjm]
#6500532
03/25/19 10:04 AM
03/25/19 10:04 AM
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Joined: Dec 2006
Posts: 22,039
SEPA
Lugnut
trapper
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trapper
Joined: Dec 2006
Posts: 22,039
SEPA
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No, the big box stores stock them here too. Not against code to sell, just to use.
Eh...wot?
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Re: Post spacing for porch roof ?
[Re: tjm]
#6500534
03/25/19 10:05 AM
03/25/19 10:05 AM
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Joined: Oct 2017
Posts: 7,422
perry co.Pa
wetdog
trapper
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trapper
Joined: Oct 2017
Posts: 7,422
perry co.Pa
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I'm guessing that if they are against code in Indiana, that Loews won't stock them, eh? They have them at Lowes here to. The average person does not know what the codes are. And Lowes recommends them for different projects.
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