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Poll: Can I use 2x4 PT for joists on an 8x8x3 deck that will hold a stackable washer dryer?
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Can I use 2x4 PT for joists on an 8x8x3 deck that will hold a stackable washer dryer?

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Old 05-27-2016, 06:14 PM   #16
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Re: Does this Contractor's plan sound legit?


My main concern is safety. Their is this little switch deep inside my brain, when I see something being done that is unsafe the switch flips. No amount of explaining to me, or being told to shut up will not even register with me.
People want to explain how things will work 20 years into the future. I legally persuade my own dad over unsafe railings on his porch of a rental property. A little six year old hurt herself fairly badly. In the end my dad gave the family the house and 22 months of paid property taxes.

Codes are their for a reason, if you want to skirt the code because you know for sure that deck will not collapse and hurt someone then go for it. If you want my help to not cut off a finger or the very cheapest way to build this deck I will help.

Every month my wife calls me into her office and points out every financial mistake I made for the month. She would have a field day on this deck. And I am having fun helping you, this is as soft as I get.
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Old 05-27-2016, 06:35 PM   #17
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Re: Does this Contractor's plan sound legit?


Quote:
Originally Posted by mj12 View Post
There are many charts that list how far with what type of wood. For me it is just common sense. No on the 4x4 posts and no on the 2x4 deck joists. Not sure what will be done for 100 dollars. I would do the layout on a napkin for a hundred dollars.
The guy is a handy person, he claims to be a contractor for 33 years. I didn't get a card with license # to verify. He did have tons of pictures of him and a crew on jobs that looked really professional. He was kind enough to sketch up a plan an he even calculated how much material I would need. $100 to screw together 6 2x4s(or 2x6s), a sheet of plywood, and sinking 4 posts in quikrete didn't sound like a bad deal. The ground is already level. The deck isn't attached to anything, and doesn't require a permit. From what I read online, 2x4 should be ok at 12in on center joist spacing since the size of the deck, the height, and the load aren't that great. I understand codes being mandated for safety, but if you know your craft you should be able to make practical judgements. I don't mind buy 2x6, and i'm sure he wouldn't object to installing them. $300 ($200 supplies max, $100 labor) didn't seem like that bad of an investment to be able to use my stack washer and store some junk. Looking at this objectively Sir, do you see anything wrong with this plan in terms of cost, safety, do ability etc.?? I would have expected more people to ask about beams, and lag bolts, and joist hangars and such, geez. If it lasts 2 years i'm happy. I made a dog house from osb over a year ago on top of a pallet. It hasn't been painted and its holding up just fine.
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Old 05-27-2016, 07:18 PM   #18
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Re: Does this Contractor's plan sound legit?


How much to get power to it?
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Old 05-27-2016, 10:19 PM   #19
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Re: Does this Contractor's plan sound legit?


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Originally Posted by tinyhousediy View Post
I live in Mojave Desert. In California. It would take years for us to get that much rain...... I did search, that's how I ended up at HD. The guy initially was offering suggestions because the sales guy was useless. And its not a deck for aesthetic purposes, its just going to house a stackable washer dryer, and maybe some tubs of junk, and if I'm lucky enough,, a hot water heater. Its only 3 feet off th ground too.
just wanted to add some insight to your situation. a 40 gal water heater holds about 334lbs worth of water not including the actual water heater, a stackable washer and dryer weighs anywhere between 150lbs to 300lbs plus i will use specs from a common one it weighs 214lbs and holds another 62lbs worth of water so you have 334lbs for the water heater and 276lbs for the washer/dryer unit.

so the dimensions of the washer/dryer i was looking at had a base of 4.5 sq feet so 276lbs/4.5 = 61.33...psf,

for the water heater it weighs 127lbs and has a diameter of 19 in. so add the weight of the water you have 461lbs. and the water heater has a base of 1.97 square feet. so that is 234psf.

you dont need to even add the random junk at this point because you are way beyond prescriptive span tables of a deck or floor which have minimum of 2x6 for the smallest span.

as far as the minimum code allows for 2x4 you are looking at 10psf dead load and 20psf live load for a 8 foot span on 19.2 inch centers, depending on wood species.

I believe the international code has a special section for water heater stands for this very reason.

p.s. I am not an engineer and this post is for entertainment purposes only
p.p.s: hopefully daniel will stop by and school me on physics.
p.p.p.s. I was bored sorry.
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Old 05-27-2016, 11:09 PM   #20
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Re: Does this Contractor's plan sound legit?


Make sure the contractor is both insured and bonded. Do not use one that isn't under any circumstances.


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Old 05-27-2016, 11:50 PM   #21
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Re: Does this Contractor's plan sound legit?


I don't see how anything like this could be done for $300. Needs power, water, roofing, siding, etc. Just doesn't add up. Or are you actually putting your washer and dryer outside?!
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Old 05-29-2016, 04:05 PM   #22
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Re: Does this Contractor's plan sound legit?


Welcome to the forums!

I don't think many people understand the strength of a 2x4 framed deck; span= 6' Total weight load= 510# Per square foot load (#2 Doug/Fir fb 1500, 12" on center) = 85#.

OTOH, 2x6 joists at same species, span and fiber bending rating are 2100# total and 210# per sq.ft. Sounds like an open deck, if built to code; http://www.awc.org/Publications/DCA/DCA6/DCA6-09.pdf

Gary
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Old 07-02-2016, 12:19 PM   #23
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Re: Does this Contractor's plan sound legit?


Quote:
Originally Posted by Mingledtrash View Post
just wanted to add some insight to your situation. a 40 gal water heater holds about 334lbs worth of water not including the actual water heater, a stackable washer and dryer weighs anywhere between 150lbs to 300lbs plus i will use specs from a common one it weighs 214lbs and holds another 62lbs worth of water so you have 334lbs for the water heater and 276lbs for the washer/dryer unit.

so the dimensions of the washer/dryer i was looking at had a base of 4.5 sq feet so 276lbs/4.5 = 61.33...psf,

for the water heater it weighs 127lbs and has a diameter of 19 in. so add the weight of the water you have 461lbs. and the water heater has a base of 1.97 square feet. so that is 234psf.

you dont need to even add the random junk at this point because you are way beyond prescriptive span tables of a deck or floor which have minimum of 2x6 for the smallest span.

as far as the minimum code allows for 2x4 you are looking at 10psf dead load and 20psf live load for a 8 foot span on 19.2 inch centers, depending on wood species.

I believe the international code has a special section for water heater stands for this very reason.

p.s. I am not an engineer and this post is for entertainment purposes only
p.p.s: hopefully daniel will stop by and school me on physics.
p.p.p.s. I was bored sorry.
Thank you. Appreciate your answer was supported by facts. Would it matter that the part of the deck supporting the washer is also supported by a metal tongue of a trailer (its a one piece metal c channel frame I think?) you rock. now on to find a wood span table...... any rec's for a deck I can build for just the washer??? I really appreciate your insight.
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Old 07-02-2016, 12:40 PM   #24
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Re: Does this Contractor's plan sound legit?




This is where I want to put the washer. So everyone with random questions about how I plan to use it can get back focused on the discussion at hand.
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Old 07-02-2016, 12:55 PM   #25
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Re: Does this Contractor's plan sound legit?


Quote:
Originally Posted by Gary in WA View Post
Welcome to the forums!

I don't think many people understand the strength of a 2x4 framed deck; span= 6' Total weight load= 510# Per square foot load (#2 Doug/Fir fb 1500, 12" on center) = 85#.

OTOH, 2x6 joists at same species, span and fiber bending rating are 2100# total and 210# per sq.ft. Sounds like an open deck, if built to code; http://www.awc.org/Publications/DCA/DCA6/DCA6-09.pdf

Gary
Thanks you Gary! I definitely don't understand the strength of it lol. Mingledtrash said that it wont support the weight of the washer when filled, you say it will???? I'm not sure the kind of wood, but its PT wood, a red brown color from Home depot..... and again, I just want to set the 4x4 in quikrete, frame it with 2x6 just to be sure lol, and sheath it with a sheet of osb. nothing fancy. i'll enclose and roof it later. Here's a link to a pic of where I want to build this, I already posted a video of how: http://bit.ly/29BNxNq Thanks again!!!
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Old 07-02-2016, 02:48 PM   #26
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Re: Does this Contractor's plan sound legit?


Quote:
Originally Posted by tinyhousediy View Post
Thanks you Gary! I definitely don't understand the strength of it lol. Mingledtrash said that it wont support the weight of the washer when filled, you say it will???? I'm not sure the kind of wood, but its PT wood, a red brown color from Home depot..... and again, I just want to set the 4x4 in quikrete, frame it with 2x6 just to be sure lol, and sheath it with a sheet of osb. nothing fancy. i'll enclose and roof it later. Here's a link to a pic of where I want to build this, I already posted a video of how: http://bit.ly/29BNxNq Thanks again!!!
If it's not enclosed immediately, you'll be better of using PT deck boards or even PT plywood. OSB will fall apart in no time.
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