P-line Identification

Structural Design User Guide

Structural Catalogue : Profiles : P-line Identification

Each P-line is identified by a two, three or four letter code (known as its PKEY) which identifies its relative position in the 2D profile

Note:

Each P-line is extruded in the design model to represent a line running along the length of a section.

Standard P-lines

All GTYPES have a common set of 14 standard P-lines.


PKEY	Description
LBOT	Left Bottom
CBOT	Centre Bottom
RBOT	Right Bottom
LMID	Left Middle
CMID	Centre Middle
RMID	Right Middle
LTOP	Left Top
CTOP	Centre Top
RTOP	Right Top
NA	Neutral Axis
BNA	Bottom Neutral Axis
LNA	Left Neutral Axis
RNA	Right Neutral Axis
TNA	Top Neutral Axis

9 of the P-lines are positioned at the corners and centrelines of a bounding box drawn around the profile.

The remaining 5 P-lines are positioned at the Neutral Axis (NA) and on the bounding box, where lines drawn through the NA in X and Y directions to intersect the bounding box.

For symmetrical profiles, some P-lines are coincident. For asymmetrical profiles, no P-lines are coincident.

Generic Type Specific P-lines

GTYPE specific P-lines ensure the trimming functionality is maintained.


PKEY	Description	GTYPE	Cconnect
NAL	Neutral Axis Left	PFI, PFT, TFI, TFT	ANY
NAR	Neutral Axis Right	PFI, PFT, TFI, TFT	ANY
IMID	Inside Middle	ANGL, PFC, TFC	ANY
IBOT	Inside Bottom	ANGL	ANY
AA	Circumference 0°	CTUB	ANY
BB	Circumference 15°	CTUB	unset
CC	Circumference 30°	CTUB	unset
DD	Circumference 45°	CTUB	unset
EE	Circumference 60°	CTUB	unset
FF	Circumference 75°	CTUB	unset
GG	Circumference 90°	CTUB	unset
HH	Circumference 105°	CTUB	unset
II	Circumference 120°	CTUB	unset
JJ	Circumference 135°	CTUB	unset
KK	Circumference 150°	CTUB	unset
LL	Circumference 165°	CTUB	unset
MM	Circumference 180°	CTUB	unset
NN	Circumference 195°	CTUB	unset
OO	Circumference 210°	CTUB	unset
PP	Circumference 225°	CTUB	unset
QQ	Circumference 240°	CTUB	unset
RR	Circumference 255°	CTUB	unset
SS	Circumference 270°	CTUB	unset
TT	Circumference 285°	CTUB	unset
UU	Circumference 300	CTUB	unset
VV	Circumference 315°	CTUB	unset
WW	Circumference 330°	CTUB	unset
XX	Circumference 345°	CTUB	unset
NAAA	NA 0°	CTUB	ANY
NACC	NA 30°	CTUB	ANY
NAEE	NA 60°	CTUB	ANY
NAGG	NA 90°	CTUB	ANY
NAII	NA 120°	CTUB	ANY
NAKK	NA 150°	CTUB	ANY
NAMM	NA 180°	CTUB	ANY
NAOO	NA 210°	CTUB	ANY
NAQQ	NA 240°	CTUB	ANY
NASS	NA 270°	CTUB	ANY
NAUU	NA 300°	CTUB	ANY
NAWW	NA 330°	CTUB	ANY
LTFL	Left Top Flange	PLTG, BOXG	ANY
RTFL	Right Top Flange	PLTG, BOXG	ANY
LBFL	Left Bottom Flange	PLTG, BOXG	ANY
RBFL	Right Bottom Flange	PLTG, BOXG	ANY
ITFL	Inside Top Flange Left	PFI, PLTG	unset
ITFR	Inside Top Flange Right	PFI, PFC, PLTG	unset
IBFR	Inside Bottom Flange Right	PFI, PFC, PLTG	unset
IBFL	Inside Bottom Flange Left	PFI, PLTG	unset
HTLA	Hole Top Left Gage A	PFI, PFT, TFI, TFT, TWT, TFWT, ZED, PLTG	BOLT
HTLB	Hole Top Left Gage B	PFI, PFT, PLTG	BOLT
HTLC	Hole Top Left Gage C	PFI, PFT, ANGL	BOLT
HTRA	Hole Top Right Gage A	PFI, PFC, PFT, TFI, TFC, TFT, TWT, TFWT,PLTG	BOLT
HTRB	Hole Top Right Gage B	PFI, PFT, PLTG	BOLT
HTRC	Hole Top Right Gage C	PFI, PFT	BOLT
HBLA	Hole Bottom Left Gage A	PFI, TFI, PLTG	BOLT
HBLB	Hole Bottom Left Gage B	PFI, ANGL, PLTG	BOLT
HBLC	Hole Bottom Left Gage C	PFI, PLTG	BOLT
HBRA	Hole Bottom Right Gage A	PFI, PFC, TFI, TFC, ANGL, ZED, PLTG	BOLT
HBRB	Hole Bottom Right Gage B	PFI, PLTG	BOLT
HBRC	Hole Bottom Right Gage C	PFI, PLTG	BOLT
IFAT	Inside Face Top	ANGL	unset
IFAB	Inside Face Bottom	ANGL	unset

Extra P-lines on bolt gage lines are available.

Relevant P-lines must have the Cconnect attribute set to ANY to maintain trimming functionality.