F1 and F2 are the limiting performance capacities of the forces in the parallel and perpendicular directions of a building component. Which one is which direction appears in a guide in each TER or corresponding test reports. There’s also an interaction between the 2 forces that cannot be exceeded which is also explained on the …
I see values for F1 and F2 on Evaluation Reports. What are they? Read More »
Why are spacing, edge distance, and embedment important for concrete anchors? Anchors transfer loads into concrete, making them vital for safe design. Their strength depends not only on the anchor itself but on how it interacts with the concrete. Three factors are key: spacing, edge distance, and embedment depth. If these are not respected, the …
Why are spacing, edge distance, and embedment important for concrete anchors? Read More »
Here is a list of fastener markings for various grades of anchors. Information is reprinted courtesy of American Fastener FASTENER GRADE MARK (SCROLL DOWN TO SEE A CHART OF MARKINGS ON THE FASTENER TO IDENTIFY THEM) Identification Grade Mark Specification Fastener Description Material Nominal Size Range (in.) Mechanical Properties Proof Load(psi) Yield StrengthMin (psi) …
ASTM, SEI, ISO Fastener Material Properties and Specifications Read More »
Tek® screws have become an essential tool in construction and manufacturing, valued for their self-drilling capabilities that simplify a variety of projects. These screws eliminate the need for pre-drilling, saving time and effort while ensuring strong, reliable connections. Ideal for applications like metal roofing and steel framing, Tek® screws deliver durable, high-performance results, making them …
TEK Sheet Metal Screws (SMS) – About – Sizes – Gauges Read More »
Per the 2015 National Design Specification for Wood Construction (NDS 2015), section 12.1.4.6, the minimum length of lag screw penetration Pmin not including the length of the tapered tip, E, of the lag screw into the main member of single shear connections and the side members of double shear connections shall be 4D where D …
What’s the minimum penetration for lag screws into wood? Read More »
Minimum Edge Distance Requirements for Bolts & Screws in Metal (Steel & Aluminum) Proper edge distance is critical to avoid tear-out, maintain bearing strength, and ensure fastener installation tolerances in metal members. Insufficient edge distance can lead to deformation or cracking near the edge of the metal, especially when larger fasteners or tight spacing are …
Minimum Edge Distance Requirements for Bolts & Screws in Metal (Steel & Aluminum) Read More »
