Aisi E 1, Volume Ii, Part Vii Anchor Bolt Chairs
AISI E 1, Volume II, Part VII Anchor Bolt Chairs: The Ultimate Guide for Sheathing Supports
If you are working on a project that involves installing anchor bolts at supports for a shell, such as a tank, a silo, or a column, you might want to know about AISI E 1, Volume II, Part VII Anchor Bolt Chairs. This is a standard that provides guidelines and recommendations for the design and installation of anchor bolt chairs, which are structures that distribute the load from the anchor bolts to the shell. In this article, we will show you what AISI E 1, Volume II, Part VII Anchor Bolt Chairs is, why it is important, and how to use it.
aisi e 1, volume ii, part vii anchor bolt chairs
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What is AISI E 1, Volume II, Part VII Anchor Bolt Chairs?
AISI E 1, Volume II, Part VII Anchor Bolt Chairs is a part of the American Iron and Steel Institute (AISI) Engineering Design Manual for Sheathing Supports. It was published in 1992 and covers the design and installation of anchor bolt chairs for sheathing supports. Anchor bolt chairs are rigid structures that consist of a top plate, vertical plates, and welds that connect them to the shell. They are used when anchor bolts must be installed at supports for a shell to prevent secondary bending in the shell and to provide adequate clearance for the nuts and washers. See Fig. 1 for an example of an anchor bolt chair.
AISI E 1, Volume II, Part VII Anchor Bolt Chairs provides formulas and tables for calculating the dimensions and stresses of the top plate, vertical plates, welds, and shell at the location of the anchor bolt chairs. It also provides recommendations for choosing the bolt circle diameter, the number and size of anchor bolts, the material and thickness of the plates and welds, and the height of the chair. It applies to shells made of carbon steel or alloy steel with different shapes and thicknesses.
Why is AISI E 1, Volume II, Part VII Anchor Bolt Chairs Important?
AISI E 1, Volume II, Part VII Anchor Bolt Chairs is important because it helps ensure the safety and reliability of sheathing supports that use anchor bolts. Anchor bolts are used to secure the base or bottom plate of a shell to a concrete foundation or another structure. They are subjected to various loads such as wind, seismic, thermal expansion, internal pressure, external pressure, and dead weight. These loads can cause bending moments in the shell at the location of the anchor bolts. If these bending moments are not properly distributed by the anchor bolt chairs, they can cause excessive stresses in the shell that can lead to cracking or buckling. Therefore, using AISI E 1, Volume II, Part VII Anchor Bolt Chairs can help prevent these failures and ensure the structural integrity of sheathing supports.
How to Use AISI E 1, Volume II, Part VII Anchor Bolt Chairs?
If you want to use AISI E 1, Volume II, Part VII Anchor Bolt Chairs for your project, here are some steps that you can follow:
Determine the design load (P) on each anchor bolt. This is the maximum allowable anchor bolt load or 1.5 times the actual bolt load, whichever is less. You can calculate the actual bolt load by using methods such as finite element analysis or empirical formulas based on the geometry and loading conditions of your structure.
Choose a bolt circle diameter (D) that just barely clears the bottom plate without notching it for flat-bottom shells. For other shells, follow the minimum clearances shown in Fig. 2. You also need to check for interference with the base or bottom plate.
Choose a number (n) and size (d) of anchor bolts that can resist the design load (P) without exceeding their allowable stress or capacity. You can use tables or formulas from codes such as ASME BPVC Section VIII Division 2 or AISC Specification for Structural Steel Buildings . You also need to consider factors such as corrosion resistance, availability, cost, and installation ease.
Choose a material and thickness (c) for the top plate that can resist bending and shear stresses caused by the eccentricity (e) of the anchor bolts with respect to the shell. You can use formulas from AISI E 1, Volume II, Part VII Anchor Bolt Chairs or other sources such as Roark's Formulas for Stress and Strain. You also need to consider factors such as weldability and compatibility with the shell material.
Choose a material and thickness (j) for the vertical plates that can resist bending stresses caused by the vertical load (Wv) from the top plate. You can use formulas from AISI E 1
Some additional sentences to complete this paragraph are:
- You can use formulas from AISI E 1
- , Volume II , Part VII Anchor Bolt Chairs [ ^1 ^ ] or other sources such as Roark's Formulas for Stress and Strain . You also need to consider factors such as stability , buckling , slenderness , and connection details .
- Choose a material and size (w) for the welds that can resist shear stresses caused by the horizontal load (WH) from the top plate . You can use formulas from AISI E 1 , Volume II , Part VII Anchor Bolt Chairs [ ^1 ^ ] or other sources such as AWS D1 . 1 / D1 . 1M : Structural Welding Code - Steel . You also need to consider factors such as weld quality , inspection , testing , and fatigue .
- Choose a height (h) for the chair that can distribute the load from the anchor bolt to the shell without overstressing it . You can use formulas from AISI E 1 , Volume II , Part VII Anchor Bolt Chairs [ ^1 ^ ] or other sources such as Timoshenko's Theory of Elastic Stability . You also need to consider factors such as clearance , accessibility , maintenance , and aesthetics .
Conclusion
AISI E 1, Volume II, Part VII Anchor Bolt Chairs is a standard that provides guidelines and recommendations for the design and installation of anchor bolt chairs for sheathing supports. Anchor bolt chairs are structures that distribute the load from the anchor bolts to the shell and prevent secondary bending in the shell. They consist of a top plate, vertical plates, and welds that connect them to the shell. AISI E 1, Volume II, Part VII Anchor Bolt Chairs helps ensure the safety and reliability of sheathing supports that use anchor bolts by providing formulas and tables for calculating the dimensions and stresses of the components of the anchor bolt chairs. It also provides recommendations for choosing the bolt circle diameter, the number and size of anchor bolts, the material and thickness of the plates and welds, and the height of the chair. It applies to shells made of carbon steel or alloy steel with different shapes and thicknesses. d282676c82
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