ICC ESR-4006 for Kwik Cast KCS-WF/MD Headed Cast-In Specialty Inserts in Cracked and Uncracked Concrete

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ICC-ES Evaluation Report Reissued November 2021
ESR-4006 This report is subject to renewal November 2022.
DIVISION: 03 00 00—CONCRETE
Section: 03 15 19—Cast-in Concrete Anchors
Section: 03 16 00—Concrete Anchors
REPORT HOLDER:
HILTI, INC.
EVALUATION SUBJECT:
HILTI KWIK CAST KCS-WF HEADED CAST-IN
SPECIALTY INSERTS IN CRACKED AND UNCRACKED
CONCRETE
1.0 EVALUATION SCOPE
Compliance with the following codes:
 2021, 2018, 2015, and 2012 International Building Code
®
(IBC)

2021, 2018, 2015, and 2012 International Residentia
l
Code
®
(IRC)
F
or evaluation for compliance with codes adopted by the
Los Angeles Department of Building and Safety (LADBS),
see ESR-4006 LABC and LARC Supplement.
Property evaluated:
Structural
2.0 USES
The Hilti Kwik Cast KCS-WF Headed Cast-In Specialty
Insert is used to resist static, wind, and seismic (Seismic
Design Categories A through F) tension and shear loads
in cracked and uncracked normal-weight or lightweight
concrete having a specified compressive strength, f′
c
, of
2,500 psi to 10,000 psi (17.2 MPa to 68.9 MPa).
Reference to “inserts” in this report refers to the
proprietary specialty anchorage products (KCS-WF) used in
concrete; reference to “steel insert elements” refers to
threaded rods or bolts; reference to “anchors” or “insert
anchor system” in this report refers to the installed inserts in
concrete with threaded rods or bolts.
The insert anchor system is an alternative to cast-in
anchors described in Section 1901.3 of the 2021, 2018 and
2015 IBC, and Sections 1908 and 1909 of the 2012 IBC.
The insert anchor system may be used where an
engineered design is submitted in accordance with Section
R301.1.3 of the IRC.
3.0 DESCRIPTION
3.1 Kwik Cast KCS-WF:
Hilti Kwik Cast KCS-WF are steel internally threaded
headed cast-in specialty inserts which receive threaded
steel insert elements such as threaded rods and bolts in
1
/
4
-
inch,
3
/
8
-inch,
1
/
2
-inch,
5
/
8
-inch, and
3
/
4
-inch thread
diameters.
The KCS-WF inserts are manufactured from carbon steel
and have a minimum 5.1 μm (0.0002 inch)
zinc coating. The KCS-WF steel outer shell is covered in a
thin plastic housing up to the steel head bearing surface.
The KCS-WF is illustrated in Figure 1.
The KCS-WF insert is installed into the wood-form for a
concrete member using the attached nails prior to the
casting of the concrete. The inserted threaded rod or bolt
can be installed into the internally threaded section of the
KCS-WF after the wood-form is removed from the concrete.
The inserts are color coded as indicated in Tables 1 for
each diameter of threaded rod or other steel element that is
threaded into the insert. Figure 1 shows a diagram of the
installed KCS-WF in a concrete member.
3.2 Steel Insert Elements:
3.2.1 Threaded Steel Rods and Bolts: Threaded steel
rods (all-thread) or bolts must be threaded into the
KCS-WF. Table 3 includes design information for several
grades of common threaded rod or bolts for the applicable
diameters. Carbon steel threaded rods or bolts must be
furnished with a minimum 5.1 μm (0.0002 inch) zinc plating.
3.2.2 Ductility: In accordance with ACI 318 (-19 and -14)
2.3 or ACI 318-11 D.1, as applicable, in order for a steel
anchor element to be considered ductile, the tested
elongation must be at least 14 percent and the reduction of
area must be at least 30 percent. Steel elements with a
tested elongation of less than 14 percent or a reduction of
area less than 30 percent, or both, are considered brittle.
Values for common steel threaded rod insert elements are
provided in Table 3 of this report. The Hilti KCS-WF Headed
Cast-In Specialty Insert steel bodies are considered brittle
elements. Where values are nonconforming or unstated, the
steel element must be considered brittle.