| Welding & Fabrica Lawn and landscape business owners discuss welding, fabricating, and repairs of various equipment. |
01-17-2003, 12:34 PM
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LawnSite Member
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Join Date: Aug 2000
Location: Brighton, MI
Posts: 121
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Cement Screws
I am using Cement Screws to ancor a shed I built to the concrete slab below. Do I have to pre drill holes?
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01-17-2003, 02:47 PM
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LawnSite Senior Member
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Join Date: Dec 2002
Location: Omaha, Nebraska
Posts: 271
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You shouldn't have to pre-drill the holes as long as you got a heavy-duty drill to help out. IMO, I would have installed lag screws upside in the concrete while it was still wet and drill a hole in the bottom plate for it and just washer and nut it. But you can't really do that if it's an existing concrete pad.
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01-17-2003, 04:56 PM
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LawnSite Member
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Join Date: Jan 2003
Location: Central New York
Posts: 67
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I would use concrete anchors instead of screws,like 3/8 or so,drill a hole set it in use a washer and nut and as you tighten the nut,the anchor expands,much stronger than the screws and not to expensive.JMO,BTW,we always drilled a pilot hole just to make it easier put you don't have to.
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01-17-2003, 06:57 PM
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LawnSite Member
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Join Date: Mar 2002
Location: Minneapolis MN
Posts: 144
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If they are Tap-con screws (the blue ones) you need to pre drill. If you buy a box of them, it comes with a bit.
__________________
4-52" Toro Proline
1-60" 27 hp Z-master
9-F350's w/ plows
1-Case 1845C
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01-17-2003, 07:09 PM
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LawnSite Senior Member
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Join Date: Dec 2002
Location: u s a
Posts: 439
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Use a hammer drill, tapcons are stong but We use a threaded stud that you drive in the hole , you cant pull it out
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01-18-2003, 05:00 PM
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LawnSite Bronze Member
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Join Date: Aug 2001
Location: Central Illinois
Posts: 1,211
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ditto on the drill hole. either anchors will work!
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01-25-2003, 04:07 PM
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LawnSite Bronze Member
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Join Date: Jan 2001
Location: Grosse Pointe. MI
Posts: 1,130
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Just Weld it to the cement slab - whoops, sorry I thought this was the welding forum.
Just Kidding 
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01-27-2003, 12:43 AM
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LawnSite Bronze Member
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Join Date: Aug 2001
Location: Central Illinois
Posts: 1,211
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Ok there isn't a way to weld concrete, but did you know there is a cutting torch for concrete? It is one bad mo fo! It,s on a long pipe so the operator can stay back, way back.
Mark
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