---
kind: "section"
citation: "46 C.F.R. § 154.429"
title: "46"
number: "154.429"
heading: "Calculations."
url: "https://uscodex.org/cfr/46/154.429"
---

# §154.429. Calculations.


The tank design load calculations for a membrane tank must include the following:

- (a) Plastic deformation and fatigue life resulting from static and dynamic loads in the membrane and the supporting insulation.
- (b) The response of the membrane and its supporting insulation to vessel motion and acceleration under the worst weather conditions. Calculations from a similar vessel may be submitted to meet this paragraph.
- (c) **The combined strains from static, dynamic, and thermal loads.**

## Notes

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.