For both vertical and horizontal vessels, internal appurtenances create loads that are directly applied to the vessel shell. These design concerns are best handled by…

In horizontal vessels, wind and earthquake loads primarily affect the design of saddles and supports. The design of the shell is normally controlled by other…

Certain “slender” vessels are susceptible to increased stresses as a result of the eccentricity of the vessel weight in the deflected position. Slender vessels are…

Vessels in high seismic zones are subjected to lateral forces during earthquakes that cause large stresses in the vessel wall. Section 100 of the Civil…

Wind loads produce two different effects on vessels. The primary effect is an equivalent static force from the maximum expected wind velocities, which causes lateral…

Nonpressure Parts of Vessel All structural steel not part of the actual pressure vessel should be designed in accordance with AISC Manual of Steel Construction.…

In-Service Conditions Circumferential stresses from internal pressure usually control the design of cylindrical pressure vessels. In horizontal vessels, wind or seismic loads rarely affect the…

In-Service Conditions Circumferential stresses from internal pressure usually control the design of cylindrical pressure vessels. However, in tall vertical vessels, five other factors may contribute…

Joint category defines the location of a joint in a vessel and does not define the type of joint. Categories of Joints 1. Longitudinal welds…

The choice of weld design depends on a number of factors including: • The conditions of welding. Accessibility has a definite influence on the type…