Aisi E 1 Volume Ii Part Vii Anchor Bolt Chairs Better ((install)) ★

): Must be tall enough to distribute the load without overstressing the shell. Typical heights range from 6 to 33 inches depending on the bolt size and shell thickness. Top Plate Thickness (

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

(minimum eccentricity) to ensure heavy hex nuts can be tightened without interfering with the shell wall. aisi e 1 volume ii part vii anchor bolt chairs better

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

It prevents "prying" actions and reduces localized shell buckling by distributing the anchor bolt's eccentricity over a wider area of the shell. ): Must be tall enough to distribute the

The formulas are applicable to various structures, including flat-bottom tanks (API 650), conical shells, and tubular columns. Critical Design Considerations

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. Core Components of an AISI Anchor Chair (minimum

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.