Residential Wood Dock Piling Code

 
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Old 05-08-2016, 08:42 PM   #1
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Residential Wood Dock Piling Code


I'm building a wooden 10' x 78' dock on fresh water with a neighbor, we are going to share it. I looked up the Florida building code, and dock piling codes aren't there. I then checked the ICC and found chapter 36 : Piers, Bulkheads and water ways.
This is the only thing I can find that states anything close to what depth of piling I need to have. I was assuming it was depth needed for dead and live loads of whats on top of the dock. In reading it, most of it is for uplift and depth to prevent it from floating away. Says 8' depth into soil minimum.
I am using the charts from the AWC prescriptive deck design for span charts on headers and joists but I was struggling to find something to back my choice and size of pilings for my drawing to present to the AHJ.
Anyone know of a chart that states depth and butt size of the wood pilings? DEP states we don't need a permit because it is residential and under 1000sq ft. Only permit we will need is from the building dept.
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Old 05-08-2016, 09:33 PM   #2
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Re: Residential Wood Dock Piling Code


Not an expert on driven pile but up here they sized based on a geotech report and installed to a certain bpf (blows per foot). I have never seen a chart that could be blindly spec'd from.

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Old 05-08-2016, 09:46 PM   #3
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Re: Residential Wood Dock Piling Code


Yeah its clear as mud around here. There's the old rule of thumb for 1/2 in and 1/2 out length. If the water is 5' deep and the dock will be 5' out of the water then it needs to be 10' deep into the mud. But where did that come from. There's got to be some technical data supporting that old saying somewhere. Looks like i'll make some calls tomorrow. I have never seen a geotech determine soil capacities for a dock around here. Not for residential that is. Only time I would see that would be if there was a home sitting on pilings, not just a simple dock.
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Old 05-08-2016, 09:50 PM   #4
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Re: Residential Wood Dock Piling Code


Up lift and lateral loads. I don't know that there is anything prescriptive, but you should be able to look at sizing for other docks n the area, plus ask the BI what he's looking for.
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Old 05-08-2016, 09:58 PM   #5
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Re: Residential Wood Dock Piling Code


Deep foundations are chapter 18 of the ibc.
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Old 05-08-2016, 10:02 PM   #6
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Re: Residential Wood Dock Piling Code


I'd talk to the inspector and see what he prefers.
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Old 05-09-2016, 12:52 PM   #7
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Re: Residential Wood Dock Piling Code


Talked to the inspector and he said when it's not clearly stated in the code book I'll have to consult and engineer and have it stated what size and depth and how the graders will be bolted to the framing. They said usually an 8" top and half in and half out. But still need an engineer. Well there goes $350. Haha


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Old 05-09-2016, 07:23 PM   #8
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Re: Residential Wood Dock Piling Code


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I'd talk to the inspector and see what he prefers.
Talk to a dock builder see what he has to say
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Old 05-09-2016, 10:05 PM   #9
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Re: Residential Wood Dock Piling Code


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Originally Posted by Builders Inc. View Post
Talked to the inspector and he said when it's not clearly stated in the code book I'll have to consult and engineer and have it stated what size and depth and how the graders will be bolted to the framing. They said usually an 8" top and half in and half out. But still need an engineer. Well there goes $350. Haha


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Holy crap!! $350.00 bucks for engineering on a dock?

We would be lucky to get engineering on just about anything for less than $3500.00 around here.

Anyway, if Florida is like Calif. then docks are not covered under CBC. I am pretty sure they would be built by an A contractor/engineering company and not a B license GC.

This doesn't help but hell, my post count goes up for whatever that is worth.

Andy.
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Old 05-09-2016, 11:04 PM   #10
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Re: Residential Wood Dock Piling Code


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Holy crap!! $350.00 bucks for engineering on a dock?
3 story deck and stairs plus a few internal structural changes to the building - $500.
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Old 05-11-2016, 07:31 AM   #11
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Re: Residential Wood Dock Piling Code


When you spend upwards of 10k a year with your engineer he cuts you a break for small stuff. Besides I can't pull permits for docks without a marine specialty license in Florida. But when it's a personal dock for my neighbor he'll just pull it. We're going to bind both parcels of land to ownership of the dock so we will have a larger dock that we can share. I've seen it before. It's formal name is a multi family dock. But if you saw how the land is shaped it makes sense to run it off a point of land that comes off his property.


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Old 05-11-2016, 12:05 PM   #12
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Re: Residential Wood Dock Piling Code


May want to send Jaws a pm. He has built a few
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Old 05-22-2016, 07:56 AM   #13
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Re: Residential Wood Dock Piling Code


So we started jetting them down last weekend and it went good. Had a hand full that we couldn't break through the clay hard pan. It shows up in spots between 5 to 8' below surface in about 4' deep water. I was talking to a college who said to just break through a pin hole size of the hard pan and attach a fitting In direct line to your emt 9' lance with an air fitting. Then while your jetting you hook an air hose to the fitting and squeeze a lever to pulsate short burst of air into the water in the lance. He said it will add 120psi to your water pressure and blow up chunks of the hard pan. Kind of a super lance. We're gonna try it today.


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Old 11-09-2017, 11:59 PM   #14
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Re: Residential Wood Dock Piling Code


[QUOTE=Builders Inc.;4724761] I can't pull permits for docks without a marine specialty license in Florida. /QUOTE]


Hello
It is my understanding that any crc,cbc,cgc etc could perform as a marine contractor(in fl).

How did that dock turn out? Any pics?
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Old 11-11-2017, 09:39 AM   #15
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Re: Residential Wood Dock Piling Code


Quote:
Originally Posted by Builders Inc. View Post
So we started jetting them down last weekend and it went good. Had a hand full that we couldn't break through the clay hard pan. It shows up in spots between 5 to 8' below surface in about 4' deep water. I was talking to a college who said to just break through a pin hole size of the hard pan and attach a fitting In direct line to your emt 9' lance with an air fitting. Then while your jetting you hook an air hose to the fitting and squeeze a lever to pulsate short burst of air into the water in the lance. He said it will add 120psi to your water pressure and blow up chunks of the hard pan. Kind of a super lance. We're gonna try it today.


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Would love to see a picture of your super lance you came up with.

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