Live Load on Marine Dock
Live Load on Marine Dock
(OP)
Based on ASCE 50, the recommended live load on marine dock is 100 psf else use local code. The marine dock is for small crafts (max boat size is 42 feet). To the best of my knowledge, FBC does not have any provision for marine docks.
Based on your experience, what do you use for live load on fixed marine docks?
Based on your experience, what do you use for live load on fixed marine docks?
Regards,
Lutfi






RE: Live Load on Marine Dock
RE: Live Load on Marine Dock
Does anyone see a hole in this approach?
Regards,
Lutfi
RE: Live Load on Marine Dock
RE: Live Load on Marine Dock
RE: Live Load on Marine Dock
If you allow people, "each consuming 4 sf each (2'x2') will result in," you will have a large hole in your dock, if not in your approach.
Is the dock 8 or 10' wide? You might want to consider a square area if it can be 10x10. Watch concentrated loads (your 400#) on joists or stringers. Many marinas have foot lockers at each slip, filled with what? You may want to consider a fair sized maintenance vehicle out their, a 42' boat has a pretty good sized engine which might need work or replacement.
RE: Live Load on Marine Dock
1. Possibility of LOTS of folks running onto the dock, with equipment, in an emergency....more like an assembly type loading.
2. Possibility of exterior long term degredation of the materials, being near water, thus - a higher live load gives me a dock with more capacity should some of that capacity be diminished.
3. Boat impact over time - that may not affect the repetative joists, etc. but might affect beam to pier connections, etc. A higher LL again provides a more substantial structure and connections.
RE: Live Load on Marine Dock
1. The term dock that I used in not the proper term. It is a pier (a main pier and finger piers).
2. There will be not heavy traffic on the piers such as equipment or machinery.
3. I am debating the 100 psf for economic reasons. I believe that I owe it to my client to give them optimal, efficient, code compliant and cost effective design while I can go to sleep at night.
4. LoL at dhengr at my use of "consuming". That is a good one. PT wood does is not filling at all. I should have used "occupy an area". The foot locker areas will be designed for 125 psf because I am treating them as storage. The pier is 8 foot wide and the piles are spaced at 10 on center. That is why I sued the 8'X10'. I am being told that engine work will not be done on the pier.
5. JEA, as always, you are great to brain storm with. You raise good points that were and will be considered.
6. I am not able to find anything loading requirement in Florida. If anyone knows of one, I would appreciate it them letting me know. The facility is located on DoD property which uses the UFCs and the IBC. UFC 3-152 has live load requirement of 40 psf and 100 psf depending in access to the public.
Great responses and forum. Thanks to all.
Regards,
Lutfi
RE: Live Load on Marine Dock
Since this pier is on DoD property, you might want to look to the Navy literature, maybe NavDocks or something like that. They have some really good design specs. and guide on dock/pier design, generally thinking a lot bigger than you are, but they may have something on your size pier too. The boat force magnitudes may change, but the design principles will not change. I wouldn't ignore the possibility of light emergency vehicles (fire or health issues, etc.), when they see the fire, they aren't going to call for your permission before they go. Put concrete filled pipes at the entrance if you mean to prevent this.
RE: Live Load on Marine Dock
Unified Facilities Criteria UFC 4-150-06 12 December 2001 cites and supplement existing government and commercial standards for design and construction of harbor and coastal facilities. http://www.wbdg.org/ccb/DOD/UFC/ufc_4_150_06.pdf
UFC 4-152-01 handbook provides basic design guidance for pier and wharf construction. http://www.wbdg.org/ccb/DOD/UFC/ufc_4_152_01.pdf
RE: Live Load on Marine Dock
BUT for the USAF - I would definitely use 100 psf. IF they can afford a $600 toilet seat - I would think that a couple of toilet seats will easily cover the costs....
RE: Live Load on Marine Dock
RE: Live Load on Marine Dock