A Case Study: Anchor Bolts Replacement for a Pressurized Tank
Publication: Structures Congress 2023
ABSTRACT
At a chemical facility in Channelview, Texas, a 35-year old ground supported pressurized carbon steel tank was at its end of life and was due for a replacement in-kind. Tank is 24 in. in diameter and 22 in. tall. It is supported on a 4 in. thick octagon mat foundation which is still in good shape and will be supporting the new tank for a myriad of reasons. Twenty-eight 2 in. dia. J-bolts were used to tie the original tank to the foundation, these original anchors were badly corroded and could not be reused for anchoring the new tank. It was decided to cut the existing anchors and use the same number of new post-installed adhesive anchors on the same bolt circle diameter, staggering the location of original anchors. In calculating the required depth for post installed anchors, bond-failure/concrete-breakout was occurring no matter the depth. A rather novel adhesive implementation and installation was devised. Use of a set of smaller size rods post-installed around each anchor bolt transferred the load and mitigated the bond failure/concrete breakout. In this paper we discuss the problem and elaborate on the solution in detail.
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REFERENCES
ACI (American Concrete Institute). (2019) Building Code Requirements for Structural Concrete, Standard ACI-318-19. Third printing. ACI, Farmington Hills, MI.
ACI (American Concrete Institute). (2020) Qualification of Post-Installed Adhesive Anchors in Concrete, Standard ACI 355.4-19). First printing. ACI, Farmington Hills, MI.
HILTI. (2019) Product Technical Guide, Volume 2: Anchor Fastening, Edition 22. HILTI Design Guide, Twenty-second printing, Plano, TX.
PIP (Process Industry Practices) (2018) Application of ASCE Anchorage Design for Petrochemical Facilities. PIP STE05121, Fifth printing, Austin, TX.
Information & Authors
Information
Published In
Structures Congress 2023
Pages: 378 - 384
History
Published online: May 1, 2023
ASCE Technical Topics:
- Adhesives
- Anchors
- Bolts
- Bonding
- Case studies
- Construction engineering
- Construction methods
- Engineering fundamentals
- Engineering materials (by type)
- Equipment and machinery
- Fastening
- Foundations
- Geotechnical engineering
- Machine foundations
- Mat foundations
- Materials engineering
- Materials processing
- Methodology (by type)
- Research methods (by type)
- Storage tanks
- Tanks (by type)
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