Sections R1.1 through R1.4 offer general input on the loads that are present in riser systems of a wide range of design types. All of these documents include a schematic layout of the riser itself as well as "Empty" and "Filled" load charts.
Support points are illustrated with arrows. Expansion joints are breaks.
The "Empty" charts refer to forces in the installed pipe when properly adjusted and empty. The "Filled" charts refer to approximate forces in the same pipe with no additional adjustment when filled. Minor variations in these forces due to expansion or contraction while having to be addressed in practice, are ot illustrated here.
To ensure compatibility between the charts, all are based on 12" standard weight pipe. (I used the 12" pipe because the weight of the steel in the pipe is approximately the same as the weight of the water in the pipe). The intent of these charts is to illustrate the approximate distribution of forces in a riser for any pipe size and hence the force values do not include units. The charts are however consistent between one another such that a value of +1 on one chart can be assumed to be 1/3 of the +3 value on a different chart. The sign convention is the "+" loads are tensile and "-" loads are compressive.
Notes on the bottom refer to application recommendations and cautions.
