Calculate the design pressure that according to
ASME B31G-1991
is the conditioned construction characteristic that should not in no way
exceeded.

`b31gdep(d, wth, smys, def)`

## Arguments

- d
nominal outside diameter of the pipe, [*inch*]. Type: `assert_double`

.

- wth
nominal wall thickness of the pipe, [*inch*]. Type: `assert_double`

.

- smys
specified minimum yield of stress (*SMYS*) as a
characteristics of steel strength, [*PSI*]. Type: `assert_double`

.

- def
appropriate (combined) design factor from
ASME B31.4,
ASME B31.8,
or ASME B31.11, [].
Type: `assert_double`

.

## Value

Design pressure of the pipe, [*PSI*]. Type: `assert_double`

.

## References

ASME B31G-1991.
Manual for determining the remaining strength of corroded pipelines. A
supplement to *ASTME B31* code for pressure piping.

## Examples

```
b31gdep(30, .438, 52e3, .72)
#> [1] 1093.748
# [1] 1093.748 # [PSI]
```