: Two parallel plates welded perpendicular to the shell and the top plate. They transfer the vertical uplift force into the shell via shear forces.
: A minimum of 1/2 inch is required between the bottom of the chair and the concrete foundation for leveling and grouting. Eccentricity (
In the complex engineering of stacked vessel construction and elevated tank design, the transfer of loads from the superstructure to the foundation is the single most critical point of structural integrity. While the vessel shell and the foundation itself are often rigorously analyzed, the connection point—the anchor bolt chair—is frequently treated as an afterthought. aisi e 1 volume ii part vii anchor bolt chairs better
Many superior chairs use threaded components that allow for precise height adjustments by simply twisting the chair, rather than using temporary, unreliable shims.
Following the minimum requirements of the code guarantees safety, but designing a better anchor bolt chair requires balancing structural efficiency with manufacturing economy. : Two parallel plates welded perpendicular to the
in diameter), the base plate is usually designed to resist bending directly, allowing for the elimination of chairs.
When anchor bolts are secured with high-quality chairs, the tolerance for misalignment is significantly reduced. This is crucial for , where pre-drilled base plates must fit exactly over the bolts. 2. Concrete Flow Optimization Eccentricity ( In the complex engineering of stacked
AISI E1 Volume II, Part VII Compliance: The Role of Better Chairs
The standard provides precise empirical definitions for every component of the anchor chair assembly. AISI E-2 Anchor Bolt Chair | PDF - Scribd