Use and Care Manual

44
Copyright © 2020 MiTek Industries, Inc. All Rights Reserved
Concrete & Masonry
Concrete & Masonry
MiTek
®
Product Catalog
DUC Ductile Undercut Anchors
DUCs are mechanical anchors expanded into holes that have been
undercut at the bottom using an undercutting drill bit. This creates a
true bearing type anchor that performs like a cast-in-place headed
anchor. Load is transferred into the concrete through bearing, not
friction like traditional expansion anchors. Excellent performance in
seismic and dynamic loading conditions. Meets ACI 318-14 Chapter 17
(2018 IBC) requirements as a code anchor, including seismic loading,
tension zone, and cracked concrete provisions.
Rod Materials: ASTM A36 (L Series), A193 Grade B7 (H Series),
or AISI 316 Stainless Studs
Anchor Body Materials: ASTM A 513 Type 5, or AISI 316 Stainless
Codes: IBC, FL, LA
DUC
Undercut Anchor
UCB Undercut
Drill Bit
DUC38-275L
DUC38-275LT
DUC38-400H
DUC38-400HT
DUC12-400L
DUC12-400LT
DUC12-500H
DUC12-500HT
DUC12-675H
DUC12-675HT
DUC58-450L
DUC58-450LT
DUC58-750H
DUC58-750HT
DUC58-900H
DUC58-900HT
DUC34-500L
DUC34-500LT
DUC34-1000H
DUC34-1000HT
1) Allowable tensile and shear capacities are for anchors installed at standard edge distance and spacing in
uncracked concrete in accordance with the
2018
IBC and referenced ACI documents.
2) See ICC-ES ESR-1970 for additional information.
Allowable
Shear
Capacity (Lbs.)
Drilled Hole
Depth of
Stop Bit (in)
Expansion
Coupling
Dia. d
c
(in)
Allowable
Tensile
Capacity (Lbs.)
Code
Ref.
IBC,
FL,
LA
7
5/8
3/4
1
1-1/8
5
8
9-1/2
5-7/8
10-7/8
3-1/8
4-3/8
4-1/4
5-1/4
8-5/8
13-5/8
7-3/4
10-3/4
9
5
10
4-1/2
7-1/2
2245
4910 4855
4170 4110
MiTek USP
Stock No.
2280
6-3/4
7
5-1/2
3/8
1/2
5/8
3/4
2-3/4
4
4
58
9-3/4 6-3/4
9685
20830 20875
8855
6290 6560
14110
7365
8990
13530
14315
Rod
Dia.
d
b
(in)
Anchor
Length
l
b
(in)
Effective
Embedment
h
ef
(in)
12-1/4
7365
lb
hef
dc
db
Tension and shear capacities for DUC Anchors in f
1
c
>
2,500 psi concrete