What is an undercut concrete anchor?
Undercut anchor designed for high strength With the use of the undercutting tool, the conical shape of the anchor fits into the conical cut of the hole, developing the tensile capacity of the bolt without slip or concrete failure.
What is minimum edge distance for anchor bolts in concrete?
From a practical point of view, the clear distance for anchor bolts or anchor bolt sleeves to the edge of the concrete shall be a minimum of 100 mm. This clear distance is intended to prevent corrosion and to make sure that the anchor bolts are not in contact with the rebar cage.
What is a mini anchor?
The Mini Dropin is a carbon steel machine bolt anchor for use in shallow embedment applications. In addition to solid concrete and precast hollow core plank, it can be used in post-tensioned concrete slabs and concrete pours over steel deck.
What is a 3/8 drop-in anchor rated for?
Technical Specifications for Drop-In Anchors
| Size | Minimum Embedment | Pull-Out (lbs.) |
|---|---|---|
| 1/4” | 1” | 939 |
| 3/8” | 1-9/16” | 1560 |
| 1/2” | 2” | 3105 |
| 5/8” | 2-1/2” | 3323 |
What is expansion anchor?
Expansion anchors are fasteners designed for use in masonry base material that provides holding power through expansion. There are two kinds of expansion anchors; pre-expanded and unexpanded. The pre-expanded expansion anchor is inserted in a predrilled hole compress and then exerts force to create the holding power.
How close can a concrete anchor be to the edge?
5 anchor diameters
Rule: Mechanical type anchors should not be set a minimum of 5 anchor diameters from an unsupported edge. Explanation: If set too close to an unsupported edge, the outward pressure of the concrete anchor will decrease the holding value of the anchor or make it non-existent.
How close to the edge of concrete Can I drill?
4 in.
Don’t Drill too Close to Edges To avoid these disasters, don’t drill any closer than 4 in. from the edge. If there’s no other option, turn off the hammering action on the drill. Also, avoid wedge-type anchors.
What size of concrete bit do you use for 3/8 drop-in anchor?
1/2″
Installing a 3/8″ Drop-In Anchor Zinc Plated Drill a 1/2″ hole into the concrete using a carbide-tipped bit that meets ANSI Standards B212. 15. The depth of the hole can be deeper or equal to the minimum embedment depth of 1-9/16″ which is equal to the length of the anchor .
What are expansion anchors?
What are wedge anchors?
“Wedge anchor” is a generic term for a type of anchor used to fasten a variety of materials to concrete. Some companies have different brand names for their wedge anchors such as Kwik Bolt, Power Stud, and Thunderstud.
What is the difference between wedge and expansion anchors?
The wedge anchor can only be used in solid concrete. Wedge anchors are designed not to be used in other masonry materials such as brick or hollow block. The expansion clip on the wedge anchor is placed on the anchor body in a manner and location that makes the expansion tolerance location critical.
Is an expansion anchor the same as a wedge anchor?
Wedge Anchor – This anchor utilizes an expansion clip at the working end and provides excellent consistent holding values of any type of expansion anchor in solid concrete. It is manufactured in 9 different diameters and in many lengths to meet most concrete fastening requirements.
How long of a concrete anchor do I need?
As a rule of thumb, the space for the nut and washer is equal to the diameter of the wedge anchor being used. For example, if a 2×4 is being fastened to concrete with a 1/2” wedge anchor then the minimum length of wedge anchor would be 1-1/2”(2×4) + 2-1/4”(minimum embedment) + 1/2”(space for nut and washer) = 4-1/4”.