" Shear Tab " & " Tab Clips and Copes " connection design locks

  • A single-plate shear connection for a flush framed joist can be designed for joist-to-column and joist-to-beam framing situations. To get a joist-to-beam connection, the top of steel of the joist and beam need to be the same (as shown in the illustration).
  • " Stiffener opposite " (in " Connection specifications ") provides a " Width of stiffener opposite " field (here, in this leaf) for joist-to-beam situations.
  • " Plate length " is measured parallel with the length of the supporting column or the depth of the supporting beam.
(joist, flush framed shear connection, to a beam or column)
(" Input connection type " = ' Flush framed shear ' or ' Auto standard ' or ' User defined ')
" Shear Tab "

" Tab Clips and Copes "
(cuts made to a shear plate)

The reference line for " Top of plate " in the above illustration runs along to top of the joist's top chord. In practice, that reference line may, instead, run along the bottom of the joist shoes. See " Top of plate ."

top 1: " Top... " when the joist's " Top of joist elevation " and its " Input elevation " are the same. top 2 applies when the elevations are different.

Related locks :

Stability Plate (to column web)

Knife Plate

User Defined Connections: Settings that are locked ( ) in a user defined connection file will automatically be locked on the Joist Edit window for which that file is the specified " User defined connection ." 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.

Joist Edit: To change a setting, first set it to locked ( ). Related settings that are unlocked ( ) may be updated, and the " Left/Right end limit state " calculations will be updated. Settings that are locked ( ) will not be changed by connection design , even if doing so might prevent a connection failure.

user defined | joist edit | top


Connection design locks :

Locks not dimensioned or called out on the drawing are marked ( not depicted ).

  Shear Tab

Shear plate

Top of plate ( top ): The positive (+) or negative (-) distance from the joist reference line to the top edge of the shear plate. In the above example , the reference line is at the top of steel, and this distance is positive.

  • The joist reference line is the top of the joist's top chord when the " Top of joist elevation " and the " Input elevation " are the same. A positive (+) distance moves the shear plate down from the top-of-steel reference line.
  • The joist reference line is the bottom of the joist's shoe when the joist's " Top of joist elevation " and the " Input elevation " are different. This is true even though the shoe is not modeled. A negative distance (-) moves the shear plate up from the bottom-of-shoe reference line.
  • Changing " Top of plate " moves the plate and holes. " Vertical to 1st hole " moves the holes.

Plate length ( length ): The distance between the top and bottom edges of the plate (see example ). If " Plate length " is unlocked ( ), changing the " Vertical hole spacing " or the number of " Rows " also changes the " Plate length ."

Plate width ( width ): The distance between the fixed edge of the shear plate and the vertical edge that is furthest from the framing edge. The fixed edge is the edge that welds to the supporting beam or column -- see example . If " Plate width " is unlocked ( ), changing the " Horizontal to 1st hole " or " Horizontal hole spacing " or the number of " Columns " also changes the " Plate width ."

Plate thickness ( not depicted ): The " Material thickness " of the shear plate.

Width of stiffener opposite ( not depicted ): The distance between the two vertical edges of the stiffener opposite. You can get a stiffener opposite to a shear plate connection for a joist-to-beam framing situation when " Stiffener opposite " is checked in " Connection specifications " for the joist (the supported member). The connection design lock " Width of stiffener opposite " is only available when a stiffener opposite has actually been designed. Note: The thickness and depth of the stiffener opposite are controlled by the " Plate thickness " and " Plate length " of the shear plate. Also, " Extend size to " needs to be set to something other than ' As required ' in order for a stiffener to be designed.

Bolts

Bolt diameter ( not depicted ): You can either type in any diameter (inches or mm), or you can select a bolt diameter from the combo box ( ). The diameters that are listed in the combo box come from Home > Project Settings > Job > Bolt Settings > the " Available bolt diameters " list. The bolt diameter entered here, together with the " Hole type ," set the diameter of holes the bolts go into.

Hole type ( not depicted ): Standard round or Short slot or Oversized or Long slot or User slot #1 or User slot #2 . The hole type selected here, together with the " Bolt diameter " entered above, set the hole diameter.

Rows: The number of rows of bolts. In the example above, this number is ' 2 '. If " Plate width " and " Tab depth " are unlocked ( ), changing the number of " Rows of bolts " also adjusts the " Plate length " and " Tab depth ."

Vertical to 1st hole ( vert to 1st ): The distance (perpendicular to the work line of the joist) from the top of the joist to the center of the nearest row of holes (see example ). Changing " Vertical to 1st hole " moves the holes, but does not move the " Top of plate ."

Vertical hole spacing ( vert spc ): The distance (center to center) between any two adjacent rows of bolts (see example ). If " Plate length " and " Tab depth " are unlocked ( ), changing the " Vertical hole spacing " also changes the " Plate length " and " Tab depth ".

Vertical edge distance ( ved ): The distance from the top edge of the shear plate to the center of the nearest hole.

Columns: The number of columns of bolts. In the example above, this number is ' 2 '. If " Plate length " is unlocked ( ), changing the number of " Columns " also changes the " Plate width ."

Horizontal to holes ( hrz ): The distance (parallel with the work line of the joist) from the joist work point to the center of the nearest column of holes (see example ). If " Plate width " is unlocked ( ), changing the " Horizontal to holes " also changes the " Plate width ."

Horizontal hole spacing ( hsp ): The distance (center to center) between any two adjacent columns of bolts (see example ). If " Plate width " is unlocked ( ), changing the " Horizontal hole spacing " also changes the " Plate width ."

Horizontal edge distance ( hed ): The distance from the length edge at the "free end" of the shear plate to the center of the nearest hole.

Welds

Note: The primary and secondary welds specified here will also apply to the stiffener opposite (if you have one).

VIDEO Welds at skewed single-plate shear connections are applied per Table 10-14C on pages 10-176 and 10-177 of the AISC 14th Edition . (Recorded in SDS2 Detailing , v2016.)

NS primary weld type: None or Double fillet or Single bevel groove or Groove w/ backing bar . This is the weld type for the near side of the shear plate.

name  
 fillet General welding of material.
 bevel groove General full penetration welding of material.

NS primary weld size ( weld ): The primary weld size used to shop weld the shear plate to supporting member. This is the weld for the near side of the shear plate. See the example and see the video. The video shows that NS and FS weld sizes may, by default, be different under skewed conditions.

FS primary weld type: Same as " NS primary weld type ," except that this is the weld on the far side of the shear plate.

FS primary weld size ( weld ): Same as " NS primary weld size ," except that this is the weld on the far side of the shear plate.

Secondary weld type: None or Double fillet or Single bevel groove or Groove w/ backing bar .

name  
 fillet General welding of material.
 bevel groove General full penetration welding of material.

Secondary weld size ( weld ): The secondary weld size used to shop weld the shear plate to the supporting member.

End connection failure message: Invalid weld configuration .

user defined | joist edit | top


  Tab Clips and Copes

Plate fixed end

(the fixed end is the end of the shear plate that welds to the supporting beam or column)

Top cut depth ( tc depth ): The depth of the shear plate's top, fixed-end clip cut. This distance is measured parallel with the " Plate length " of the shear plate from the top edge of the shear plate to the bottom of the fixed-end top clip cut (see example ).

Top cut length ( tc length ): The length of the shear plate's top, fixed-end clip cut. This distance is measured parallel with the " Plate width " of the shear plate from the fixed-end edge of the shear plate to the corner of the fixed-end clip cut at the top edge of the shear plate (see example ).

Bottom cut depth ( bc depth ): The depth of the shear plate's bottom, fixed-end clip cut. This distance is measured parallel with the " Plate length " of the shear plate from the bottom edge of the shear plate to the top of the fixed end's bottom clip cut (see example ).

Bottom cut length ( bc length ): The length of the shear plate's bottom, fixed-end clip cut. This distance is measured parallel with the " Plate width " of the shear plate from the fixed-end edge of the shear plate to the corner of the clip cut at the bottom edge of the shear plate (see example ).

Plate free end

(the free end is the end of the shear plate that is opposite to the fixed end)

Top cut depth ( tc depth ): The depth of the shear plate's top, free-end cope cut. This distance is measured parallel with the " Plate length " of the shear plate of the shear plate from the top edge of the shear plate to the bottom of the top, free-end cope cut (see example ).

Top cut length ( tc len ): The length of the shear plate's top, free-end cope cut. This distance is measured parallel with the " Plate width " of the shear plate from the free-end edge of the shear plate to the corner of the free-end cope cut at the top edge of the shear plate (see example ).

Bottom cut depth ( bc depth ): The depth of the shear plate's bottom, free-end cope cut. This distance is measured parallel with the of the shear plate from the bottom edge of the shear plate to the top of the free end's bottom cope cut (see example ).

Bottom cut length ( len ): The length of the shear plate's bottom, free-end cope cut. This distance is measured parallel with the " Plate width " of the shear plate from the free-end edge of the shear plate to the corner of the cope cut at the bottom edge of the shear plate (see example ).

Tab depth: The distance between the corners of the free-end edge of the shear plate (see example ). This distance is measured parallel with the " Plate length " of the shear plate

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