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Bottom Gusset One Member Perp " connection design locks
| A bottom gusset plate for a wide flange horizontal brace can weld to a beam's bottom flange. This example shows a brace that is perpendicular to the beam. |
" Bottom Gusset One Member Perp "
Connection Guide: Click here for related screen shots.
User Defined Connections: Settings that are locked (
) in a user defined connection file will automatically be locked on a member edit window for which that file is the " Input connection type ." You can, if you so choose, manually lock additional settings on the member edit window, and your changes will be retained, through multiple processes, so long as you do not change to a different connection then switch back to the original user defined connection.
Horizontal Brace Edit: To change a setting, first set it to locked (
) may be updated, and the "
user defined | horizontal brace edit | top
Connection design locks :
| Locks not dimensioned or called out on the drawing are marked ( not depicted ). |
Bottom Gusset One Member Perp
Weld size: The weld size used to shop weld the framing edge of the bottom gusset plate to the bottom flange of the beam. See the example .
Thickness ( not depicted ): The " Material thickness " of the bottom gusset plate.
Width: The distance from the framing edge of the bottom gusset plate to the edge of the gusset plate that is opposite and parallel to the framing edge (see example ). Plate width is measured parallel with the work line of the horizontal brace and perpendicular to the work line of the beam.
Length: The length of the framing edge of the bottom gusset plate (the edge that welds to the beam's bottom flange -- see example ). Plate length is measured parallel with the work line of the beam.
Refx: A positive (+) or negative (-) distance (parallel with the work line of the supporting beam) from the work point of the horizontal brace to the corner of the framing edge of the bottom gusset plate (see example ).
A " Refx " of ' 0 ' aligns the corner of the bottom gusset plate with the brace's work point. Entering a negative (-) distance moves the gusset plate one direction parallel with the work line of the beam. Entering a positive (+) distance moves the gusset plate in the opposite direction parallel with the work line of the beam. The default setting is 1/2 the plate length since this type of gusset plate (disregarding the holes) is symmetrical around the work line of the horizontal brace.
Refy: A positive (+) or negative (-) distance (perpendicular to the work line of the supporting beam) from the work point of the horizontal brace to the framing edge of the bottom gusset plate (the edge that is welded in the example shown).
A " Refy " of ' 0 ' aligns the framing edge of the bottom gusset plate with the work point. Entering a positive (+) distance moves the gusset plate away from the work point toward the opposite end of the horizontal brace. Entering a negative (-) distance moves the gusset plate in the direction that this end of the horizontal brace points toward.
For the example shown, in which the gusset welds to the beam web, the default " Refy " is half the web thickness. For a gusset that fastens with a NS and/or FS clip angle ("
Refz ( not depicted ):
Slope ( not depicted ): The positive or negative number of degrees between the framing edge of the bottom gusset plate (which welds to the supporting beam) and the work line of the horizontal brace.
Negative degrees indicate a clockwise rotation. Positive degrees indicate a counterclockwise rotation. Since, in this case, the brace frames perpendicular to the beam, the slope should be 90.
Cut depth: The distance (perpendicular to the work line of the beam) from either corner of the framing edge of the bottom gusset plate to where the plate begins to taper (see example ).
Cut depth is measured parallel with the width of the gusset plate.
Cut length: One half of the length of the edge of the bottom gusset plate that is parallel to and opposite to the framing edge of the bottom gusset plate (see example ).
Cut length is parallel with the work line of the beam. Since the bottom gusset plate is symmetrical on either side of the brace work line, this distance is from the brace work line; consequently, the distance entered should be 1/2 the actual cut length.
Fill plate thickness ( not depicted ): The " Material thickness " of the fill plate.
For a non-sloping horizontal brace, the thickness of the fill plate should be equal to the difference in elevation between the bottom flange of the wide flange horizontal brace and the the top face of the bottom gusset plate. The top face of the bottom gusset plate should be at the same elevation as the bottom flange of the supporting beam.
Fill plate width: The distance between the two edges of the fill plate that are parallel to the work line of the wide flange horizontal brace. This distance is perpendicular to the work line of the brace (see example ).
Fill plate length: The distance between the two edges of the fill plate that are perpendicular to the work line of the wide flange horizontal brace. This distance is parallel with the work line of the brace (see example ).
Fill plate refx: The distance from the work point for this end of the wide flange horizontal brace to the nearest edge of the fill plate (see example ).
Increasing this distance slides the fill plate back toward the opposite end of the horizontal brace. The plate will remain at the same elevation (in the same plane if this is a sloping horizontal brace).
Fill plate refy: The distance from the work line of the horizontal brace to the length edge of the fill plate (see example ).