Aisi E 1 Volume Ii Part Vii Anchor Bolt Chairs Better Online

An anchor bolt chair is a fabricated assembly welded to the base of a shell or column. According to the , a standard chair consists of:

These chairs are considered "better" than alternative fastening methods because they effectively minimize secondary bending stresses in the shell by distributing loads through a rigid, box-like assembly. Core Components of an AISI Anchor Chair

While anchor chairs are excellent for discrete bolt locations, they should not be placed further than 10 feet apart. If the required bolt spacing is less than 2 feet 6 inches, the suggests a continuous top ring may be more efficient than individual chairs. aisi e 1 volume ii part vii anchor bolt chairs better

Supports the nut and washer, transmitting the bolt tension into the vertical plates.

For high-seismic applications where tanks have thin shells, anchor bolt chairs designed to AISI E-1 specifications are the preferred choice for ensuring long-term structural integrity and maintenance accessibility. An anchor bolt chair is a fabricated assembly

Two parallel or tapered plates that transfer the load from the top plate to the shell.

In the engineering of industrial storage tanks, pressure vessels, and tall columns, the transition of high tensile loads from anchor bolts into thin-walled shells is a critical structural challenge. (Steel Plate Engineering Data) provides the industry-standard methodology for designing anchor bolt chairs. If the required bolt spacing is less than

): Calculated by treating the plate as a beam with partially fixed ends.

An optional plate used for stability or to increase the bearing area on the foundation. Why the AISI E-1 Method is Superior

It prevents "prying" actions and reduces localized shell buckling by distributing the anchor bolt's eccentricity over a wider area of the shell.