SC001AM10 SHOP-WELDED, FIELD-BOLTED CLIP ANGLE SHEAR CONNECTION

This connection detail refers to the shop-welded, field bolted clip angle beam connections designed to AISC 360 2010 specifications. The popularity of this connection is due to its ease of fabrication and erection. The connection can be welded in the fabrication shop and bolted to the supporting member at site. The supporting member can be either a beam web, column flange or column web.

sc001am10 support types

Shear connections are assumed to transfer no moment across the connections. This rotational flexibility is assumed to be provided by the relative flexibility of the clip angle outstanding legs.

Validation record

The design checks performed by the program are verified against a series of manually performed calculations to verify the output. The complete validation document for this connection can be downloaded here.

Fit-up checks

The following checks for fit-up of the connection are performed by the program.

  • Checks the minimum bolt spacing requirement as per AISC360.
  • Checks the horizontal and vertical bolt edge dist on clip angle in accordance with AISC360.
  • Checks the horizontal bolt edge dist on column flange in accordance with AISC360.
  • Checks bolt nut clash with column fillet area.
  • Checks bolt nut clash with clip angle fillet area.
  • Checks clearance for weld at top of clip angle.
  • Checks clearance for weld at bottom of clip angle.
  • Checks minimum top cope depth.
  • Checks minimum bottom cope depth.
  • Checks minimum cope length.

Design checks

The following design checks are performed by the program.

  • Checks for bolt shear
  • Checks for bolt tension
  • Checks for bolt bearing at clip
  • Checks for bolt bearing at support
  • Checks for weld shear
  • Checks for web rupture at weld
  • Checks for clip angle prying
  • Checks for clip angle shear yielding
  • Checks for clip angle shear rupture
  • Checks for clip angle block shear
  • Checks for column flange prying
  • Checks for column web yielding
  • Checks for column web crippling
  • Checks for column web flexure yielding
  • Checks for flexure strength of coped section
  • Checks for compression strength of coped section
  • Checks for shear strength of coped section

Assumptions in design

The following assumptions are made while performing the design of the connection.

  • For bolt bearing checks, it is assumed that deformation at service load is a design considerations When there is a backing beam present, conservatively only half the bearing strength is considered. If both flanges are coped top and bottom cope shall be of equal length.
  • For cope checks it is conservatively assumed that moments due to shear force and transfer force are additive.
  • For cope checks top flange is assumed to be in compression.
  • For column web local yielding check, it is conservatively assumed that the beam is near the edge of the column.

Input parameters

The cin input file for this connection requires the following parameters to run.

ParameterAcceptable valueExample
CONNECTION_CODESC001AM10CONNECTION_CODE SC001AM10
CONNECTION_IDAny alpha-numeric set of characters used to identify the connection.CONNECTION_ID SHEAR03
METHODASD|LRFDMETHOD ASD
UNITSNEWTON_MM|KIP_INUNITS NEWTON_MM
MODULUS_OF_ELASTICITYA positive numberMODULUS_OF_ELASTICITY 200000
POISSON_RATIOA positive number between 0 and 0.5POISSON_RATIO 0.3
STEEL_GRADE_OF_ANGLEA36|A992STEEL_GRADE_OF_ANGLE A36
STEEL_GRADE_OF_BEAMA36|A992STEEL_GRADE_OF_BEAM A36
STEEL_GRADE_OF_SUPPORTA36|A992STEEL_GRADE_OF_SUPPORT A992
WELD_ELECTRODEE70WELD_ELECTRODE E70
BOLT_GRADEA325|A490BOLT_GRADE A325
TRANSFER_FORCEAny numeric valueTRANSFER_FORCE 15000
SHEAR_FORCEAny numeric valueSHEAR_FORCE 90000
BOLT_DIAMETERIf unit is set to NEWTON_MM:
M16|M20|M22|M24|M27|M30|M36.
If unit is set to KIP_IN:
1/2|5/8|3/4|7/8|1|1_1/8|1_1/4|1_3/8|1_1/2.		BOLT_DIAMETER M22
BOLT_TYPEBEARING|FRICTIONBOLT_TYPE FRICTION
THREAD_INCLUDED_IN_SHEARYES|NO
Required for only bearing type bolts.		THREAD_INCLUDED_IN_SHEAR YES
FAYING_SURFACECLASS_A|CLASS_B
Required only for friction type bolts.		FAYING_SURFACE CLASS_A
NUMBER_OF_BOLTS_PER_ROWInteger greater than or equal to 2NUMBER_OF_BOLTS_PER_ROW 4
BOLT_GAGEA positive numberBOLT_GAGE 140
BOLT_SPACINGA positive numberBOLT_SPACING 60
THICKNESS_OF_WELDA positive numberTHICKNESS_OF_WELD 8
BEAM_SECTIONA valid AISC W sectionBEAM_SECTION W410X67
CONNECTION_SETBACKA positive numberCONNECTION_SETBACK 12
COPE_LENGTHA positive numberCOPE_LENGTH 100
TOP_COPE_DEPTHA positive numberTOP_COPE_DEPTH 35
BOTTOM_COPE_DEPTHA positive numberBOTTOM_COPE_DEPTH 35
SUPPORT_SECTIONA valid AISC W sectionSUPPORT_SECTION W410X67
SUPPORT_TYPEBEAM|COLUMN_FLANGE|COLUMN_WEBSUPPORT_TYPE BEAM
BACKING_BEAMYES|NOBACKING_BEAM YES
CLIP_ANGLEA valid AISC angle sectionCLIP_ANGLE L102X102X9.5
OUTSTANDING_LEGLONG_LEG|SHORT_LEGOUTSTANDING_LEG LONG_LEG
CLIP_ANGLE_LENGTHA positive numberCLIP_ANGLE_LENGTH 240
CLIP_ANGLE_TOPA positive numberCLIP_ANGLE_TOP 40