M. To add an American steel joist section
To add an American steel joist section and, optionally, have it sized by span and load, use the following procedure.
STAAD.Pro includes the
facilities for specifying steel joists and joist girders. The basis for this
implementation is the information contained in the 1994 publication of the
American Steel Joist Institute called
"Fortieth edition standard specifications, load tables
and weight tables for steel joist and joist girders."
Member properties can be assigned by specifying a joist designation contained
in tables supplied with the program, including the following joists and joist
girder types:
- Open web steel joists – K series and KCS joists
- Longspan steel joists – LH series
- Deep Longspan steel joists – DLH series
- Joist Girders – G series
-
Either:
select the tool in the Beam Profiles group on the Specifications ribbon tab
or
select the Properties page and then click Legacy on the Properties - Whole Structure dialog
Tip: Selecting the country from the Database tool drop-down list first results in a faster dialog load time.The Legacy Profile Databases dialog opens. - Select the Steel tab and then the American Steel Joist entry on the left-hand side.
- Select the series of joists you want to use.
- (Optional)
To have the program select a least-weight option of joist for you,
do the following:
- Type the search criteria (differs by joist series) in the Find suitable joist section fields.
- Click Find Section.
-
Either:
To… Do the following… add the section to the model for later assignment click Add. add the section to the model and assign to the current member selection click Asign. - Click Close.
Example Input
An example of a structure with joist:
STAAD SPACE EXAMPLE FOR JOIST GIRDER
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 10 0
3 30 10 0; 4 30 0 0
MEMBER INCIDENCES
1 1 2; 2 2 3; 3 3 4;
MEMBER PROPERTY AMERICAN
1 3 TABLE ST W21x50
MEMBER PROPERTY SJIJOIST
2 TABLE ST 22K6
CONSTANTS
E STEEL ALL
DENSITY STEEL ALL
POISSON STEEL ALL
SUPPORTS
1 4 FIXED
UNIT POUND FEET
LOAD 1
SELFWEIGHT Y -1
LOAD 2
MEMBER LOAD
2 UNI GY -250
LOAD COMB 3
1 1 2 1
PERF ANALY PRINT STAT CHECK
PRINT SUPP REAC
FINISH