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#1
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Florida Fence Posts
Building a 6' tall horizontal fence with 4x4 PT posts and a combination of
horizontal 1x6 and 1x4 PT members (with 3/4" gap between boards). Florida building code calls for 4' spacing of posts and 24" depth with concrete footers. I would like to skip the concrete and use pea gravel to avoid future rotting. I also don't want the extra expense of transporting and pouring concrete (even if I pour it dry and let groundwater cure it). I already placed the order for 8' fence posts (buried 24" in gravel), but am wondering if I should buy 10' posts and bury 4' in gravel. I have an auger with extensions, so hole depth isn't an issue. Soil is very sandy in Florida and area where posts go is elevated, but bordering a rainwater drainage ditch. The ditch only fills after very heavy rains and will drain from sandy soil in about 1 day. My 2 questions a 1. For a 6' fence, 10' 4x4 or 8' 4x4? Pea gravel packed. 2. For 4x4 posts, should I use a 6" auger bit or 4" auger bit? Thanks http://www.homeownershub.com/img/6u |
#2
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Florida Fence Posts
On Wed, 06 Apr 2016 16:44:02 +0000, Doubts in S. Florida wrote:
Building a 6' tall horizontal fence with 4x4 PT posts and a combination of horizontal 1x6 and 1x4 PT members (with 3/4" gap between boards). Florida building code calls for 4' spacing of posts and 24" depth with concrete footers. I would like to skip the concrete and use pea gravel to avoid future rotting. I also don't want the extra expense of transporting and pouring concrete (even if I pour it dry and let groundwater cure it). I already placed the order for 8' fence posts (buried 24" in gravel), but am wondering if I should buy 10' posts and bury 4' in gravel. I have an auger with extensions, so hole depth isn't an issue. Soil is very sandy in Florida and area where posts go is elevated, but bordering a rainwater drainage ditch. The ditch only fills after very heavy rains and will drain from sandy soil in about 1 day. My 2 questions a 1. For a 6' fence, 10' 4x4 or 8' 4x4? Pea gravel packed. 2. For 4x4 posts, should I use a 6" auger bit or 4" auger bit? Thanks http://www.homeownershub.com/img/6u You said Florida building code calls for 4' spacing of posts and 24" depth with concrete footers -- not pea gravel. Why are you asking about pea gravel? As far as the auger diameter is concerned, the diameter of concrete footer that is required will determine the auger diameter. Do you have any other stupid questions? |
#3
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Florida Fence Posts
replying to Gordon Shumway, Doubts in S. Florida wrote:
None of the professional fence companies use concrete footers - some just pack in plain soil, gravel will provide drainage and pack itself with time and wind movement. It would be more helpful if you provided an opinion on 4' or 2' depth with pea gravel and hole diameter. -- posted from http://www.homeownershub.com/mainten...ts-883442-.htm |
#4
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Florida Fence Posts
Doubts in S. Florida wrote:
replying to Gordon Shumway, Doubts in S. Florida wrote: None of the professional fence companies use concrete footers - some just pack in plain soil, gravel will provide drainage and pack itself with time and wind movement. It would be more helpful if you provided an opinion on 4' or 2' depth with pea gravel and hole diameter. Why pea gravel? It would seem to me that it would allow way more motion in storms than crushed gravel or concrete? It would be like ball bearings when a storm trys to blow the fence out of the ground and through your neighbors house. Wouldn't you think that's why they require concrete footers? |
#5
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Florida Fence Posts
On 4/6/2016 12:44 PM, Doubts in S. Florida wrote:
Building a 6' tall horizontal fence with 4x4 PT posts and a combination of horizontal 1x6 and 1x4 PT members (with 3/4" gap between boards). Florida building code calls for 4' spacing of posts and 24" depth with concrete footers. I would like to skip the concrete and use pea gravel to avoid future rotting. I also don't want the extra expense of transporting and pouring concrete (even if I pour it dry and let groundwater cure it). I already placed the order for 8' fence posts (buried 24" in gravel), but am wondering if I should buy 10' posts and bury 4' in gravel. I have an auger with extensions, so hole depth isn't an issue. Soil is very sandy in Florida and area where posts go is elevated, but bordering a rainwater drainage ditch. The ditch only fills after very heavy rains and will drain from sandy soil in about 1 day. My 2 questions a 1. For a 6' fence, 10' 4x4 or 8' 4x4? Pea gravel packed. 2. For 4x4 posts, should I use a 6" auger bit or 4" auger bit? Thanks http://www.homeownershub.com/img/6u I was surprised that building code applies to fences but apparently it does: http://www.fortlauderdale.gov/home/showdocument?id=1668 The note about final inspection would imply to me that a building permit is required. This all being the case, you best adhere to the code. You may work around it but be caught later if someone buys the property and it is not up to code. |
#6
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Florida Fence Posts
On Wed, 06 Apr 2016 18:44:01 +0000, Doubts in S. Florida wrote:
replying to Gordon Shumway, Doubts in S. Florida wrote: None of the professional fence companies use concrete footers - some just pack in plain soil, gravel will provide drainage and pack itself with time and wind movement. It would be more helpful if you provided an opinion on 4' or 2' depth with pea gravel and hole diameter. Here we go with the stupid questions again. I'm going to take a wild guess on this one, but I think the answer to this question is in the building code. If you need anymore help just let me know. |
#7
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Florida Fence Posts
On Wednesday, April 6, 2016 at 12:44:06 PM UTC-4, Doubts in S. Florida wrote:
Building a 6' tall horizontal fence with 4x4 PT posts and a combination of horizontal 1x6 and 1x4 PT members (with 3/4" gap between boards). Florida building code calls for 4' spacing of posts and 24" depth with concrete footers. I would like to skip the concrete and use pea gravel to avoid future rotting. I also don't want the extra expense of transporting and pouring concrete (even if I pour it dry and let groundwater cure it). I already placed the order for 8' fence posts (buried 24" in gravel), but am wondering if I should buy 10' posts and bury 4' in gravel. I have an auger with extensions, so hole depth isn't an issue. Soil is very sandy in Florida and area where posts go is elevated, but bordering a rainwater drainage ditch. The ditch only fills after very heavy rains and will drain from sandy soil in about 1 day. My 2 questions a 1. For a 6' fence, 10' 4x4 or 8' 4x4? Pea gravel packed. 10' 4x4, concrete. Did someone say code? I thought so. 2' is minimum. If digging is so easy, why not go deeper? 2. For 4x4 posts, should I use a 6" auger bit or 4" auger bit? Sandy soil? I used a post hole digger. I have sandy soil and our code requires 4' holes. It was a piece of cake (other than the occasional root) to dig 4' holes for both my deck and my fence. Will a 4" auger leave you enough room for fill of *any* type? I can tell you for a fact that a post hole digger will and that it's pretty easy to "adjust" a hole in sandy soil with a post hole digger. Drop in the post, plumb it, pour in the concrete, add some water from a hose and be done. You are asking us to "approve" your desire to go against the code for your area. Why we do that? |
#8
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Florida Fence Posts
On Wed, 06 Apr 2016 16:44:02 +0000, Doubts in S. Florida
wrote: Building a 6' tall horizontal fence with 4x4 PT posts and a combination of horizontal 1x6 and 1x4 PT members (with 3/4" gap between boards). Florida building code calls for 4' spacing of posts and 24" depth with concrete footers. I would like to skip the concrete and use pea gravel to avoid future rotting. I also don't want the extra expense of transporting and pouring concrete (even if I pour it dry and let groundwater cure it). I already placed the order for 8' fence posts (buried 24" in gravel), but am wondering if I should buy 10' posts and bury 4' in gravel. I have an auger with extensions, so hole depth isn't an issue. Soil is very sandy in Florida and area where posts go is elevated, but bordering a rainwater drainage ditch. The ditch only fills after very heavy rains and will drain from sandy soil in about 1 day. My 2 questions a 1. For a 6' fence, 10' 4x4 or 8' 4x4? Pea gravel packed. 2. For 4x4 posts, should I use a 6" auger bit or 4" auger bit? Thanks http://www.homeownershub.com/img/6u You might get 10 years out of PT 4x4s but I doubt it. I used .4 ACQ posts and they were toast in about 7. http://gfretwell.com/ftp/Bad%20PT.jpg Best off if you have a marine contractor supply there who can get you ..6 or .8 CCA. Promise them you are working on a salt water dock and don't let your kids lick the posts. If you just set them in the sand and pack it in as you back fill you will snap the posts off before they come loose. This is not beach sand, it is just about every size from dust to concrete sand. That stuff will pack in pretty tight. An auger is really overkill but if you have it you might as well use it. I have an old style post hole digger and it takes about 2 minutes to punch a 4' hole in this sand. |
#9
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Florida Fence Posts
"Doubts in S. Florida" wrote in message ups.com... Building a 6' tall horizontal fence with 4x4 PT posts and a combination of horizontal 1x6 and 1x4 PT members (with 3/4" gap between boards). Florida building code calls for 4' spacing of posts and 24" depth with concrete footers. I would like to skip the concrete and use pea gravel to avoid future rotting. I also don't want the extra expense of transporting and pouring concrete (even if I pour it dry and let groundwater cure it). I already placed the order for 8' fence posts (buried 24" in gravel), but am wondering if I should buy 10' posts and bury 4' in gravel. I have an auger with extensions, so hole depth isn't an issue. Soil is very sandy in Florida and area where posts go is elevated, but bordering a rainwater drainage ditch. The ditch only fills after very heavy rains and will drain from sandy soil in about 1 day. My 2 questions a 1. For a 6' fence, 10' 4x4 or 8' 4x4? Pea gravel packed. 2. For 4x4 posts, should I use a 6" auger bit or 4" auger bit? Do the math, at 4 x 4 aka 3 3/8 x 3 3/8" will not fit a 4" hole, so go with bigger auger. My druthers would be 8" diameter x 4 feet deep. Even if the code only calls for 24" deep, a bad hurricane could easily push a fence over in sand, 4 feet deep in concrete will make it a lot sturdier, unless you like to keep rebuilding fences. One trick to avoid the wood from swelling when it is wet and cracking the concrete is to put some wire rings around the post in several locations and a few inches below the surface. Coat hanger wire will work as well, remember to twist the ends of the circle together. I have heavy hard pan clay and need to go 4 feet deep for fence posts because of frost, I only wish I had sandy soil to work with. It once took me 8 hours to sledge a 10 foot ground rod into the ground, and I was required to put two of them in, I was sore and tired after doing that. You have got it easy, don't lazy out. |
#10
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Florida Fence Posts
replying to Gordon Shumway, HermitageRenovation wrote:
You are most likely a highly qualified skilled tradesman. Your brutally harsh reply is either the result of you having a bad day and this question just hitting you wrong or you're hoping for a flame war. Isn't this a Homeowner forum? I guess the days of 'if you can't say something nice'' are dead. I am a central Florida homeowner, for reference. Last 3 fence jobs were all done by professionals. 2 were peagravel, one concrete footers. The concrete posts rotted within 7 years. -- posted from http://www.homeownershub.com/mainten...ts-883442-.htm |
#11
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Florida Fence Posts
replying to Doubts in S. Florida, HermitageRenovation wrote:
6" bit, plan on tamping it down HARD. My experience, worth what you paid for it. Maybe a professional will pipe up? -- posted from http://www.homeownershub.com/mainten...ts-883442-.htm |
#12
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Florida Fence Posts
On Wed, 06 Apr 2016 21:44:02 +0000, HermitageRenovation wrote:
replying to Gordon Shumway, HermitageRenovation wrote: You are most likely a highly qualified skilled tradesman. Your brutally harsh reply is either the result of you having a bad day and this question just hitting you wrong or you're hoping for a flame war. Isn't this a Homeowner forum? I guess the days of 'if you can't say something nice'' are dead. I am a central Florida homeowner, for reference. Last 3 fence jobs were all done by professionals. 2 were peagravel, one concrete footers. The concrete posts rotted within 7 years. So... |
#13
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Florida Fence Posts
replying to EXT, Doubts in S. Florida wrote:
Thanks for all the replies folks. Decided on a 6" auger bit, digging 4' down, using 10' PT 4x4 posts. Will pack with pea gravel below and on the sides. Possibly install a concrete collar at the top. In this case, I think 4' depth with pea gravel will be better than 2' concrete footer. And for all you code-junkies out there, I understand your point, but I've seen too many new/newer PERMITTED fences with 8' post spacing and most without concrete footers, how is this worse than those? The original fence posts are 4x4's, spaced 8' apart, and have lasted 30 years and at least 30 hurricanes/tropical storms without concrete. One 4x4 that lines a driveway is set in concrete and it has been replaced 3 times in as many years due to rotting. And seriously, who has ever inspected fence posts before buying? If a fence was built before the new codes - it would be grandfathered in (I know that is not the case here). Please explain how a rotten post with a concrete footer will be safer than a 4' deep compacted gravel hole? If anything, the rotten post will snap off, supplying shrapnel to hurricane-force winds. A loose post will just lean and decrease wind loading as it leans. -- posted from http://www.homeownershub.com/mainten...ts-883442-.htm |
#14
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Florida Fence Posts
On Thu, 07 Apr 2016 00:44:01 +0000, Doubts in S. Florida
wrote: replying to EXT, Doubts in S. Florida wrote: Thanks for all the replies folks. Decided on a 6" auger bit, digging 4' down, using 10' PT 4x4 posts. Will pack with pea gravel below and on the sides. Possibly install a concrete collar at the top. In this case, I think 4' depth with pea gravel will be better than 2' concrete footer. And for all you code-junkies out there, I understand your point, but I've seen too many new/newer PERMITTED fences with 8' post spacing and most without concrete footers, how is this worse than those? The original fence posts are 4x4's, spaced 8' apart, and have lasted 30 years and at least 30 hurricanes/tropical storms without concrete. One 4x4 that lines a driveway is set in concrete and it has been replaced 3 times in as many years due to rotting. And seriously, who has ever inspected fence posts before buying? If a fence was built before the new codes - it would be grandfathered in (I know that is not the case here). Please explain how a rotten post with a concrete footer will be safer than a 4' deep compacted gravel hole? If anything, the rotten post will snap off, supplying shrapnel to hurricane-force winds. A loose post will just lean and decrease wind loading as it leans. I didn't follow this thread - sorry - but .. you might have lost a few of us when you first mentioned 8 ft fence posts for a 6 ft fence 2 ft deep. Dunno ... seems so wrong - as to negate discussion. John T |
#15
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Florida Fence Posts
On Wed, 06 Apr 2016 16:59:53 -0500, Gordon Shumway
wrote: On Wed, 06 Apr 2016 21:44:02 +0000, HermitageRenovation wrote: replying to Gordon Shumway, HermitageRenovation wrote: You are most likely a highly qualified skilled tradesman. Your brutally harsh reply is either the result of you having a bad day and this question just hitting you wrong or you're hoping for a flame war. Isn't this a Homeowner forum? I guess the days of 'if you can't say something nice'' are dead. I am a central Florida homeowner, for reference. Last 3 fence jobs were all done by professionals. 2 were peagravel, one concrete footers. The concrete posts rotted within 7 years. So... Put in the concrete "footer" required and then pack the hole with Pea Gravel? |
#16
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Florida Fence Posts
On Thu, 07 Apr 2016 00:44:01 +0000, Doubts in S. Florida
wrote: replying to EXT, Doubts in S. Florida wrote: Thanks for all the replies folks. Decided on a 6" auger bit, digging 4' down, using 10' PT 4x4 posts. Will pack with pea gravel below and on the sides. Possibly install a concrete collar at the top. In this case, I think 4' depth with pea gravel will be better than 2' concrete footer. And for all you code-junkies out there, I understand your point, but I've seen too many new/newer PERMITTED fences with 8' post spacing and most without concrete footers, how is this worse than those? The original fence posts are 4x4's, spaced 8' apart, and have lasted 30 years and at least 30 hurricanes/tropical storms without concrete. One 4x4 that lines a driveway is set in concrete and it has been replaced 3 times in as many years due to rotting. And seriously, who has ever inspected fence posts before buying? If a fence was built before the new codes - it would be grandfathered in (I know that is not the case here). Please explain how a rotten post with a concrete footer will be safer than a 4' deep compacted gravel hole? If anything, the rotten post will snap off, supplying shrapnel to hurricane-force winds. A loose post will just lean and decrease wind loading as it leans. I agree with the analysis. I have been here well over 30 years and seen a lot of stuff that survived and stuff that failed. Wood in concrete fails faster, right at the top. If you just pack 2 or 3 feet in the dirt, you are better off than concrete. This ACQ stuff will still fail, even packed with dirt. It is pure junk. I won't use anything less than .6 CCA with ground contact and I prefer 2.5 CCA pilings. |
#17
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Florida Fence Posts
On Thu, 07 Apr 2016 00:44:01 +0000, Doubts in S. Florida
wrote: The original fence posts are 4x4's, spaced 8' apart, and have lasted 30 years and at least 30 hurricanes/tropical storms without concrete Oh really? What town in South Florida that has had a hurricane every year for 30 years. Inquiring minds want to know... |
#18
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Florida Fence Posts
On Wed, 06 Apr 2016 18:57:14 -0700, Oren wrote:
On Thu, 07 Apr 2016 00:44:01 +0000, Doubts in S. Florida m wrote: The original fence posts are 4x4's, spaced 8' apart, and have lasted 30 years and at least 30 hurricanes/tropical storms without concrete Oh really? What town in South Florida that has had a hurricane every year for 30 years. Inquiring minds want to know... Hurricane, no, tropical storm, just about all of them. |
#19
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Florida Fence Posts
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#21
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Florida Fence Posts
replying to Gordon Shumway, StevenKimbell wrote:
Do you have any other stupid questions? Uncalled for and unprofessional. -- for full context, visit https://www.homeownershub.com/mainte...ts-883442-.htm |
#22
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Florida Fence Posts
On 4/2/2018 3:44 PM, StevenKimbell wrote:
replying to Gordon Shumway, StevenKimbell wrote: Do you have any other stupid questions? Uncalled for and unprofessional. Are you the new moderator? |
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