DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Plumbing Forum > Need help with creating support structure for steel tub




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 12-21-2011, 09:40 PM  
amodoko
Member
 
Join Date: Jun 2010
Posts: 36
Liked 1 Times on 1 Posts
Likes Given: 12

Default Need help with creating support structure for steel tub

Hey guys, I kind of have a unique question. I recently undertook installing a new tub in my home. It is a lot of work and have ran into some minor issues. I have one more issue to deal with now though...

I had called the manufacturer of the tub I am going to install to ask them weight specs. The user of this tub is 425 pounds and so I needed to ask the manufacturer if the foam pad under the tub was sufficient for support. They said the tub is only tested up to 300 lbs and is not recommended above that. I'm assuming all steel tubs are probably around the same weight load limit. Cast iron is currently out of the question due to its weight and difficulty getting it into the place, not to mention I already have done so much work on this steel tub and the bathroom according to its specs, so I do not want to return it the steel tub.

I really don't want to void the warranty and remove the pad just to lay a bed of mortar, but I do want extra support since the tub is not meant to hold a 425 pound man, it is meant for only 300 pounds or less. Do you think it would be okay if I did this: Cutting wood from 2x4s and shaping it to fit the base of the outer edge of the tub and creating a rectangular shaped structure to go around the foam pad on all sides (that way I can keep the pad). I would cut the wood so that there would be a gap between it and the tub, and in that gap I would pack it with some foam padding I bought from Lowes to allow the tub some "give" with weight and to soften the way the wood feels to the tub. I attached two pics to show you what I mean. The first one is of the tub's foam pad, the second one explains more of what I want to do.

I don't think steel really cracks, but I know it can bend, which is why I want to install additional reinforcement.

So what do you think? Is my plan for extra reinforcement using wood and foam padding good and safe? Is there anything wrong with my structural plan?



img_1011.jpg   pad-arrangement.jpg  
__________________
amodoko is offline  
 
Reply With Quote Quick reply to this message
Old 12-22-2011, 07:19 AM  
Redwood
Certified Lunatic
 
Redwood's Avatar
 
Join Date: Apr 2009
Location: Olde Tyme, Connecticut
Posts: 887
Default

Placing a 2 X 4 like you are planning may create a shear point where the steel will bend causing the porcelain enamel to crack, this will then cause rusting.

Really the fact is that the person using this tub is a weight where special considerations have to be made and it's time to face the fact...

A cast iron tub is not out of the question...
It may be required for this application!



__________________
Redwood is offline  
 
Reply With Quote Quick reply to this message
Old 12-22-2011, 02:15 PM  
amodoko
Member
 
Join Date: Jun 2010
Posts: 36
Liked 1 Times on 1 Posts
Likes Given: 12

Default

Okay, thanks Redwood, I appreciate it. I am considering doing the cast iron tub. But in this case, if I did do a cast iron tub, wouldn't I have to reinforce the floor below it? Since it will be weight of cast iron tub + weight of 425 pound man + weight of water in tub = over 1000 pounds. Just wondering. I'm assuming I will have to call in someone to check this.

__________________
amodoko is offline  
 
Reply With Quote Quick reply to this message
Old 12-22-2011, 03:47 PM  
nealtw
Contractor
 
Join Date: Nov 2010
Location: vancouver, b.c.
Posts: 9,773
Liked 803 Times on 716 Posts
Likes Given: 1366

Default

These tubs are not all the same, the trick is how much it weighs, you want the heaviest you can buy, probably not the one from the box stores.

__________________
nealtw is online now  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Concrete Front Porch Structure bheher Bricks, Masonry and Concrete 1 10-16-2011 11:43 AM
Concrete Front Porch Structure bheher Bricks, Masonry and Concrete 0 10-16-2011 09:10 AM
Roof structure questions for Cathedral ceilings (pics) BKB94 Framing and Foundation 1 07-30-2009 06:01 AM
Wood vrs Steel post beam support mschmit Framing and Foundation 2 12-31-2008 10:07 PM
replacing wood support beam with steel? elementx440 Framing and Foundation 1 02-16-2007 12:38 AM