New Woodshop/Shed

« back to Exterior Home Improvement forum

Topic by UncleSnail posted 04-28-2010 01:54 AM 8169 views 0 times favorited 12 replies Add to Favorites Watch
View UncleSnail's profile


2 posts in 4189 days

04-28-2010 01:54 AM

Topic tags/keywords: question workshop

I am about to start building a new shed…a 16×20 foot woodshop. I am having trouble deciding what type of floor to put down….wood or cement? I am vascillating between the two but am leaning toward cement. I have some heavy tools. My table saw weighs around 400 pounds. Anyway….’would appreciate any and all suggestions. Thanks. Uncle Snail

View Dan Lyke's profile

Dan Lyke

331 posts in 4943 days

04-28-2010 08:02 PM

I’m in the planning stages of a similar project. I’ve had a number of people tell me to go with a wood floor, because it’s more resilient and easier to stand on, but I’m leaning towards slab because with a 18”+ crawlspace and the joists for the floor the building starts to get pretty tall pretty fast.

Have you found some of the joist calculators online? 16’ is a pretty hefty span. The 400lbs is a “dead load”, that is it isn’t going to cause flex in the floor once it’s in place (and if you design for a 40 lbs per square foot “live load” and the tablesaw takes up a little more than 3’x3’ you’re there anyway), but even so you’ll probably end up with a support running down the middle of the floor.

-- Dan Lyke, Petaluma California, http://www.flutterby.net/

View JSZ's profile


1 post in 4187 days

04-29-2010 05:35 AM

Having worked on both concrete and wooden floors, I can tell you there is nothing to decide: if you can make it work, a wood floor is the only way to go. When I built my shop I used a post-and-beam structure to support my floor. But even if a concrete slab is part of your project, I would but a wooden floor on sleepers above the concrete. This is particularly true if you ever plan to use hand tools. Drop a chisel – or worse, a nice hand plane – on concrete and see what happens. A wooden floor is MUCH more forgiving.

Good luck!!

View UncleSnail's profile


2 posts in 4189 days

05-03-2010 04:24 AM

thanks for the ideas and comments…..I never considered dropping a tool on a concrete floor…and I drop things frequently. Thanks for the tip. Dan….not sure why a “dead load” will not cause floor sag. Your comments suggest I should go with a wood floor. Thanks again. Uncle Snail

View Dan Lyke's profile

Dan Lyke

331 posts in 4943 days

05-03-2010 04:32 PM

So the whole “live load” vs “dead load” calculations aren’t about sag, actually, they’re about the effects of dynamic sagging. Every joist sags a little bit, the point with live loads and dead loads is that if you’re walking around (a live load) on top of a plaster covered ceiling, the sag and release is going to cause cracking in that ceiling.

The bottom of the trusses in that attic space with limited access may easily be able to support 40lbs/sq.foot, but they’ve been engineered for 10lbs/sq.ft. because nobody foresees someone holding a party up there, and lots of people moving around flexing that relatively brittle ceiling underneath them.

In your shop floor, you’re worried about sag (you don’t want to drop the aforementioned chisels hand have them all roll to the center of the room), but that’s mostly a dead-load issue, because that floor, especially if it’s just going to be a plywood sheathing surface, can take a lot of flex and warp without showing signs of cracking.

-- Dan Lyke, Petaluma California, http://www.flutterby.net/

View mrfixitri's profile


1 post in 4183 days

05-04-2010 12:50 AM

Hey Uncle – I just finished building a two-story hobby workshop for myself. Roughly the same dimensions as you’re going for. I too have some very heavy ww equipment and I used floor trusses for the support on both floors. I left the floor unfinished, using Advantix 3/4” subfloor. It’s easy on the back and like others have said, forgiving if (or when) you drop your tools. It’s also ‘warmer’ than cold concrete. You can see pix of it at http://www.c1679.com Go to the page “Recent Outside Photos.’ The “barn” pix start 2 photos down from the top. Hope this helps.

View Sailor's profile


19 posts in 4189 days

05-04-2010 05:40 PM

I would vote for the crawlspace if I had the choice. Adding to some of the positive reasons above, it would be very nice to run some electrical wiring under the floor and have plugs in the floor for tools that are in the center of the workshop. No more chords running accross the floor.

I second the floor trusses, they are very stable you can order them just how you want them. If you plan on having a heavy piece of equipment sitting in a certain spot in your shop (table saw for example) you could tell the engineer and he would have no problem beefing up a few floor trusses so that you would have no worries with sagging.

My family owns and runs a roof and floor truss manufacturing company, which is actually where I am typing this from. I may be a bit biased but there are definate advantages to truss systems. Have fun with your new shop whatever route you choose!

View alexawatkins's profile


1 post in 2233 days

09-05-2015 03:59 AM

Try wood, aside from natural way, it can be repaired easily than of concrete. I have done it so I know, and I was just inspired by http://eatmywords.com/portfolio/before-and-after/.

-- Works for Alexandra Watkins Nmaing Firm - see her at http://www.stumbleupon.com/stumbler/AlexandraWatkin

View Bradford123's profile


3 posts in 1703 days

02-15-2017 12:30 PM

good Waiting Download WhatsApp for PC now as well as let WhatsApp for iPhone your hands are complete connect media data to your nice.

View Clarkson's profile


1 post in 1652 days

04-07-2017 04:56 AM

Now, you’ll be able to keep Foodsaver Gamesaver Deluxe vs. Cabela‚Äôs Preservac Premium Food Vacuum Sealer Review those leftovers from Best Vacuum Sealer 2017 last night for longer. VACUUMSEALERS84.OVER-BLOG.COM If you’ve obtained an active kitchen The Best Food Vacuum Sealer Reviews area and you’ve constantly obtained food you have to store, CRENOVA AUTOMATIC VS-1 VACUUM SEALER REVIEW this could be the purchase for you.

View dangolree's profile


20 posts in 992 days

01-27-2019 07:26 AM

This website is best for home furnishing. All the much needed information is here in this site. Recommended.
online games for all

View ianmugoya18's profile


16 posts in 840 days

11-21-2019 11:58 AM

View rahul221sharmaa's profile


11 posts in 875 days

12-20-2019 07:52 AM

You must be signed in to reply.

DISCLAIMER: All views and comments posted by members are not necessarily those of HomeRefurbers.com or of those working on the site.

Latest Projects | Latest Blog Entries | Latest Forum Topics

LumberJocks.com :: woodworking showcase