Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 478

Table 20 — Design strength for steel failure of KCC-MD Short Plate and Long Plate inserts 1 , 2 , 3 , 4 , 5
Insert Type
Design information Symbol Units
SP 3 / 8 ”
SP 1 / 2 ”
LP 3 / 8 ”
LP 1 / 2 ”
Nominal rod diameter ( in .) - in . 3 / 8 1 / 2 3 / 8 1 / 2
Anchor O . D .
d a
( mm )
( 17 )
( 22 )
( 17 )
( 22 )
in .
0.67
0.87
0.67
0.87
Effective embedment
h ef
( mm )
( 51 )
( 64 )
( 51 )
( 64 )
in .
2.00
2.50
2.00
2.50
Min . specified ult . Strength , f ut lb ( kN )
f ut
( kN )
( 18.0 )
( 24.1 )
( 18.0 )
( 24.1 )
lb
4,040
5,410
4,040
5,410
Anchor category - - Cast-In
Concrete material resistance factor ϕ c - 0.65
Resistance modification factor for tension and shear , concrete failure modes , Condition B
Steel embed . material resistance factor for reinforcement
Resistance modification factor for tension , steel failure modes
Resistance modification factor for shear , steel failure modes
R
-
1.00
ϕ s
-
0.85
R
-
0.70
R
-
0.65
Factored steel strength of insert in tension ,
ϕ Nsa , insert
( kN )
( 10.7 )
( 14.3 )
( 10.7 )
( 14.3 )
lb
2,405
3,220
2,405
3,220
Factored seismic steel strength of insert in tension
ϕ Nsa , insert , eq
( kN )
( 11 )
( 14 )
( 11 )
( 14.3 )
lb
2,405
3,220
2,405
3,220
Installations in upper flute of metal deck ( i . e . W-deck and B-deck ) according to Figures 5A
Factored steel strength of insert in shear
ϕ Vsa , insert
( kN )
( 12 )
( 14 )
( 12 )
( 14 )
lb
2,590
3,075
2,590
3,075
Factored seismic steel strength of insert in shear
ϕ Vsa , insert , eq
( kN )
( 12 )
( 22 )
( 12 )
( 22 )
lb
2,590
4,875
2,590
4,875
Installations in lower flute of metal deck ( i . e . W-deck ) according to Figures 5B
Factored steel strength of insert in shear
ϕ Vsa , insert
( kN )
( 8 )
( 10 )
( 12 )
( 14 )
lb
1,900
2,310
2,735
3,075
Factored seismic steel strength of insert in shear
ϕ Vsa , insert , eq
( kN )
( 8 )
( 10 )
( 12 )
( 14 )
lb
1,900
2,310
2,735
3,075
Installations in lower flute of metal deck ( i . e . B-deck ) according to Figures 5C
Factored steel strength of insert in shear
ϕ Vsa , insert
( kN )
( 8 )
( 10 )
( 12 )
( 14 )
lb
1,745
2,190
2,660
3,075
Factored seismic steel strength of insert in shear
ϕ Vsa , insert , eq
( kN )
( 8 )
( 10 )
( 12 )
( 14 )
lb
1,745
2,190
2,660
3,075
Installations in lower flute of metal deck ( i . e . W-deck ) according to Figures 5D
Factored steel strength of insert in shear
ϕ Vsa , insert
( kN )
( 4 )
( 11 )
lb
950
2,455
N / A
Factored seismic steel strength of insert in shear
ϕ Vsa , insert , eq
( kN )
( 4 )
( 9 )
lb
950
1,965
1 Design information in this table is taken from ICC-ES ESR-4145 , Table 4 , and converted for use with CSA A23.3 ( R2014 ) Annex D . 2 The carbon steel KCC-MD is considered a brittle steel element as defined by CSA A23.3 ( R2014 ) Annex D section D . 2 . 3 Tension values are for the inserts only . The capacity of the threaded rods must be also determined from Table 27 . The design strength of concrete must be obtained from tables 21-
27 . Compare the tension values of threaded rod , inserts , and concrete . The lesser of the values is to be used for the design . 4 Shear values are for the inserts only . The capacity of the threaded rods must be also determined from Table 27 . The calculation of concrete shear strength is not required . Compare the shear values of threaded rod and inserts . The lesser of the values is to be used for the design strength of the anchor in shear . 5 Only threaded rod ASTM A193 Grade B7 , ASTM A325 , or ASTM F1554 Grade 105 is permitted to be used for the applications resisting shear , seismic shear , or seismic tension loads .
474 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.17 KCC-WF AND KCC-MD CAST-IN ANCHOR Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458