| a | = | size of test specimen |
| b | = | size of test specimen |
| d | = | diameter of round tensile test specimen |
| df | = | distance from the plane of the fatigue pre-crack
to the fusion line |
| e | = | plastic deformation |
| hT | = | test pressure height |
| hop1 | = | vertical distance from the load point to the
position of maximum filling height |
| hs3 | = | vertical distance from the load point to the
top of the tank |
| hp0 | = | height corresponding to valve opening pressure
when exceeding the general value |
| hop2 | = | vertical distance from the load point to the
position of maximum filling height. For tanks adjacent to the sea
that are situated below the extreme operational draught (TE), hop2 is
not normally to be taken as being less than TE |
| hD2 | = | pressure head due to flow through pipes |
| le | = | equivalent parameter for conical shells |
| lmin | = | breadth of test assembly plates |
| lr | = | length of template or rod |
| r | = | nominal radius of the shell |
| ra | = | actual distance from the centre of the sphere
to the shell wall |
| re | = | equivalent parameter for conical shells |
| ra | = | actual distance from the cylinder axis to the
shell wall |
| s | = | distance between stiffeners or girders |
| t | = | thickness |
| t1 | = | wall thickness of the greater tube (can) |
| t2 | = | wall thickness of the smaller tube (brace) |
| A | = | diameter used in wrap around bending test |
| C | = | diameter of roller in bend test |
| D | = | outside diameter |
| D1 | = | outside diameter of the greater tube (can) |
| D2 | = | outside diameter of the smaller tube (brace) |
| KV | = | impact energy requirement |
| Lo | = | length of test area in test specimens |
| Lmin | = | length of test assembly plates |
| N | = | number of |
| R | = | radius |
| Rc | = | forming radius |
| T | = | thickness of plate in bend test |
| W | = | width of weld |
![[Table of Contents]](/dwicons/b_toc.gif)
![[-]](/dwicons/i_colpse.gif)