Tapcon screws

[JJWalecka]

Are Tapcon screws listed for over head support? I found some technical data, http://www.confast.com/products/technical-info/tapcon-concretescrew.aspx.

Feedback is welcome.

JJ

 

[Jim W in Tampa]

I love tapcons but not trusting them on a straight pull out. May at a 90 to hold a strap and would want them long and maybe 3 or 4

 

[RJohnsonMasterElectrician]

Ultimate pull out in 4000 psi concrete

Depth of embedment in solid material
1" 1-1/4" 1-1/2" 1-3/4"
Anchor size
3/16 650lb 870lb 1090lb 1460lb
1/4 800lb 1340lb 1820lb 2380lb


Ultimate shear in 4000psi concrete

Depth of embedment in solid material
1" 1-1/4" 1-1/2" 1-3/4"
anchor size
3/16 702lb 800lb 860lb 990lb
1/4 1360lb 1370lb 1380lb 1670lb



Ultimate pullout/shear in hollow block

anchor embedment ultimate pullout ulti.shear
anchor size
3/16 1" 340lb 730lb
1/4 1" 500lb 1000lb



*A saftey factor of 4:1 or 25% of ultimate pullout/shear value is generally accepted as a safe working load



Hope this helps, comes right from box of tapcons


sorry it didnt come out as I typed it hope you can understand

I would use them over head depend on what i was trying to hold up

 

[daleuger]

Drive pins, baby! They work like a champ.
Drill a 1/4" hole set them in place tap in hammer/kleins. You can almost do chin-ups off something hung with them.

 

[izak]

drive pins are GREAT

 

[nakulak]

I don't trust tapcons for anything but plastic signs. I was just looking at a service relocate yesterday on a strip mall that's maybe 3 yrs old, and all the CT cabinets are falling off the wall - tapcons in split face block.

 

[JJWalecka]

I prefer Nail in anchors for most light applications. http://www.confast.com/products/metal-hit-anchor.aspx.

Drop in anchors are a product to stand by also.
http://www.confast.com/products/drop-in-anchor.aspx

Thanks for the feedback

JJ

 

[daleuger]

I prefer Nail in anchors for most light applications. http://www.confast.com/products/metal-hit-anchor.aspx.

Drop in anchors are a product to stand by also.
http://www.confast.com/products/drop-in-anchor.aspx

Thanks for the feedback

JJ

That's exactly what I was talking about when I said drive pins.
Just didn't have a spiffy link.

 

[LarryFine]

Drop in anchors are a product to stand by also.
http://www.confast.com/products/drop-in-anchor.aspx

I like the use of an indoor/outdoor speaker bracket screwed to a floor for the demo.

 

[glene77is]

I prefer Nail in anchors for most light applications. http://www.confast.com/products/metal-hit-anchor.aspx.

Drop in anchors are a product to stand by also.
http://www.confast.com/products/drop-in-anchor.aspx

JJ,
Thanks. Good info. Links are good, too.

One thing strikes me about the Strike-In Anchors
as indicated in this quote from the manufacturer:
"The forces on a Drop-In Anchor are transferred to the material ..."
That is to say that the expanding forces are transferred to the mat'l.
This means, as they say, that the Strike-Ins should not be used in concrete blocks or bricks.
They should be used on
(1) SOLID base mat'l
(2) holes bored EXACTLY right size
(3) holes VERY clean!

On the other hand, the Concrete Screws use a semi-self threading method with less force transferred to the mat'l. These can tolerate more dust in the hole, etc., like a helper might do.

I prefer the Strike-INs.
Either way, I would not push the limits of their holding power.
I always use several where possible, and space-out the holes.
Thinking about it, Strike-INs used overhead will be fairly dust-free, just takes a good hand to drill straight.

IMO, the Strike-INs used overhead are the better way to go.

Thanks for the presentation. :smile: