![]() Reference should be made to applicable codes for the specific working ratio. A safety factor of 4:1 or 25% is generally accepted as a safe working load. Values shown are average ultimate values and are offered only as a guide and are not guaranteed. Technical Information: Ultimate Load Values in 2000 PSI Concrete Size When vibration or sudden impact is part of the load conditions, the spacing between anchors should be increased. When it comes to drilling holes for concrete anchors, the general rule of thumb is that the hole should be about 1/2 wider than the anchor itself. As a rule of thumb, the expansion anchor industry has established a minimum standard of ten (10) anchor diameters for spacing between anchors and five (5) anchor diameters from an unsupported edge. wall drywall thickness ncr block 240' 340 490 minimum embedment 1-1/2' 1-3/4' 2-1/2' load lbs. If the anchors are installed too close together, it can cause an interaction of the forces, thus reducing the holding power of the anchor. drill size 5/16' c.90 hollow 4,000 psi bric 225 250 anchor size wedge bit size ansi bit size 7/16' 9/16' 11/16' plywood dryw 40 lbs. The forces on a Wedge Anchor are transferred to the base material in which it is installed. You will need to drill a pilot hole when using any type of concrete anchor. This will provide some extra depth to accommodate a minor amount of concrete cuttings which may not be able to be cleaned out of the hole. Regular drill bits will dull too quickly. Table 3 Hilti KWIK Bolt 3 stainless steel design strength with concrete / pullout failure in uncracked concrete1,2,3,4,5 Nominal anchor diameter in. For temporary applications anchors may be driven into drilled holes. The depth of the hole in the base material should be at least the length of the anchor minus the thickness of the material being fastened. Anchor size is same as drill bit size for easy installation. Although you can drill through concrete with a carbide-tipped bit using a rotary drill only. ![]() 3/16', 1/4' and 5/16' Tapcon anchors require specially engineered Tapcon drill bits, which are designed with tighter tolerances than standard ANSI drill bits for maximum holding power. The Wedge anchor requires no maximum hole depth. 3/8' and 1/2' Tapcon anchors can use standard ANSI drill bits. The sum of these three items equals the minimum wedge anchor length. To determine the length of wedge anchor required, add the thickness of the material to be fastened, plus minimum embedment, plus the thickness of the nut and washer. Wedge anchors should be used only in solid concrete. Wedge anchors come in a variety of diameters, lengths, and thread length and are available in three materials: zinc plated carbon steel, hot-dipped galvanized, and stainless steel. Titen HD Screw Anchors for use in solid masonry and some hollow block applications. To ensure safe and proper wedge anchor installation, certain technical specifications must be considered.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |