D6.A.8 Built-in French Steel Section Library
The following information is provided for use when the built-in steel tables are to be referenced for member property specification. These properties are stored in a database file. If called for, the properties are also used for member design. Since the shear areas are built into these tables, shear deformation is always considered for these members.
An example of the member property specification in an input file is provided at the end of this section.
A complete listing of the sections available in the built-in steel section library may be obtained by using the tools of the graphical user interface.
Following are the descriptions of different types of sections.
D6.A.8.1 IPE Shapes
These shapes are designated in the following way.
10 15 TA ST IPE140 20 TO 30 TA ST IPEA120 33 36 TO 46 BY 2 TA ST IPER180
D6.A.8.2 HE shapes
HE shapes are specified as follows.
3 5 TA ST HEA120A 7 10 TA ST HEM140 13 14 TA ST HEB100
D6.A.8.3 IPN Shapes
The designation for the IPN shapes is similar to that for the IPE shapes.
25 TO 35 TA ST IPN200 23 56 TA ST IPN380
D6.A.8.4 T Shapes
Tee sections are not input by their actual designations, but instead by referring to the I beam shapes from which they are cut. For example,
1 5 TA T IPE140 2 8 TA T HEM120
D6.A.8.5 U Channels
Shown below is the syntax for assigning 4 different names of channel sections.
1 TO 5 TA ST UAP100 6 TO 10 TA ST UPN220 11 TO 15 TA ST UPN240A 16 TO 20 TA ST UAP250A
D6.A.8.6 Double U Channels
Back to back double channels, with or without a spacing between them, are available. The letter D in front of the section name will specify a double channel.
11 TA D UAP150 17 TA D UAP250A SP 0.5
In the above set of commands, member 11 is a back-to-back double channel UAP150 with no spacing in between. Member 17 is a double channel UAP250A with a spacing of 0.5 length units between the channels.
Two types of specification may be used to describe an angle. The standard angle section is specified as follows:
16 20 TA ST L30X30X2.7
The above section signifies an angle with legs of length 30mm and a leg thickness of 2.7mm. This specification may be used when the local Z axis corresponds to the z-z axis specified in Chapter 2. If the local Y axis corresponds to the z-z axis, type specification "RA" (reverse angle) should be used instead of ST.
17 21 TA RA L25X25X4 22 24 TA RA L100X100X6.5
Note that if the leg thickness is a round number such as 4.0, only the number 4 appears in the section name, the decimal part is not part of the section name.
D6.A.8.8 Double Angles
Short leg back-to-back or long leg back-to-back double angles can be specified by means of input of the words SD or LD, respectively, in front of the angle size. In case of an equal angle, either SD or LD will serve the purpose.
33 35 TA SD L30X20X4 SP 0.6 37 39 TA LD L80X40X6 43 TO 47 TA LD L80X80X6.5 SP 0.75
D6.A.8.9 Tubes (Rectangular or Square Hollow Sections)
Section names of tubes, just like angles, consist of the depth, width and wall thickness as shown below.
64 78 TA ST TUB50252.7 66 73 TA ST TUB2001008.0
Members 64 and 78 are tubes with a depth of 50mm, width of 25mm and a wall thickness of 2.7mm. Members 66 and 73 are tubes with a depth of 200mm, width of 100mm and a wall thickness of 8.0mm. Unlike angles, the ".0" in the thickness is part of the section name.
Tubes can also be input by their dimensions instead of by their table designations. For example,
6 TA ST TUBE DT 8.0 WT 6.0 TH 0.5
is a tube that has a depth of 8 length units, width of 6 length units, and a wall thickness of 0.5 length units. Only code checking, no member selection, will be performed for TUBE sections specified in this way.
D6.A.8.10 Pipes (Circular Hollow Sections)
To designate circular hollow sections, use PIP followed by numerical value of the diameter and thickness of the section in mm omitting the decimal portion of the value provided for the diameter. The following example illustrates the designation.
8 TO 28 TA ST PIP422.6 3 64 78 TA ST PIP21912.5
Members 8 to 28 are pipes 42.4mm in dia, having a wall thickness of 2.6mm. Members 3, 64 and 78 are pipes 219.1mm in dia, having a wall thickness of 12.5mm.
Circular hollow sections may also be provided by specifying the outside and inside diameters of the section. For example,
1 TO 9 TA ST PIPE OD 25.0 ID 20.0
specifies a pipe with outside dia. of 25 length units and inside dia. of 20 length units. Only code checking, no member selection will be performed if this type of specification is used.
Sample file containing French shapes:
STAAD SPACE UNIT METER KN JOINT COORD 1 0 0 0 15 140 0 0 MEMB INCI 1 1 2 14 UNIT CM MEMBER PROPERTIES FRENCH * IPE SHAPES 1 TA ST IPEA120 * IPN SHAPES 2 TA ST IPN380 *HE SHAPES 3 TA ST HEA200 * T SHAPES 4 TA T HEM120 * U CHANNELS 5 TA ST UAP100 * DOUBLE U CHANNELS 6 TA D UAP150 SP 0.5 * ANGLES 7 TA ST L30X30X2.7 * REVERSE ANGLES 8 TA RA L25X25X4 * DOUBLE ANGLES - SHORT LEGS BACK * TO BACK 9 TA SD L30X20X4 SP 0.25 * DOUBLE ANGLES - LONG LEGS BACK * TO BACK 10 TA LD L80X40X6 SP 0.75 * TUBES (RECTANGULAR OR SQUARE * HOLLOW SECTIONS) 11 TA ST TUB50252.7 * TUBES (RECTANGULAR OR SQUARE * HOLLOW SECTIONS) 12 TA ST TUBE DT 8.0 WT 6.0 TH 0.5 * PIPES (CIRCULAR HOLLOW SECTIONS) 13 TA ST PIP422.6 * PIPES (CIRCULAR HOLLOW SECTIONS) 14 TA ST PIPE OD 25.0 ID 20.0 PRINT MEMB PROP FINISH