8/12/2019 48-Usmc Sae Mechanical Coupler Splice System
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LEGACY REPORT
Business/Regional Office#5360 Workman Mill Road, Whittier,
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ICC Evaluation Service, Inc.
www.icc-es.org
Legacy report on the 1994 Uniform Building Code
ER-5216Issued November 1, 1995
Copyright 2005 Page 1 of 5
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express or implied, as to
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DIVISION: 03CONCRETESection: 03210Reinforcing Steel
US/MC-SAE MECHANICAL COUPLER SPLICE SYSTEM
RICHMOND SCREW ANCHOR COMPANY1202 AVENUE T
GRAND PRAIRIE, TEXAS 75050
1.0 SUBJECT
US/MC-SAE Mechanical Coupler Splice System.
2.0 DESCRIPTION
2.1 General:
The US/MC-SAE Mechanical Coupler Splice Systemmechanically
splices steel reinforcing bars (rebar) used inreinforced concrete
construction. The system butt splicesrebars of equal or different
diameters. The couplers complyas tension and compression mechanical
connections inaccordance with Section 1912.14.3 of the code.
Location oftension splices must comply with Section 1912.14
and1912.15 of the code. Four types of couplers are
recognized:Standard Splice, Transition Splice, Position Coupler
Spliceand Welding Coupler Splice.
2.2 Materials:
2.2.1 Couplers:Couplers are manufactured from materialmeeting
ASTM A 108 material specifications and exceedingASTM A 615 Grade 60
strength requirements.
2.2.2 Rebar:Deformed reinforcing steel conforms to ASTMA 615,
Grade 60 specifications. Rebar sizes permitted to bespliced with
the coupler system are Nos. 7, 8, 9, 10 and 14.
2.3 Installation:
2.3.1 Standard Coupler Splice:The system consists of twodowel-in
rebars with standard threads and a US/MC coupler.The coupler is
fully threaded onto one rebar. The second baris butted to the end
of the first bar and the coupler is thenreverse threaded onto the
second bar. The bars are torquedclockwise to a snug tight
condition. See Figure 1 for details.
2.3.2 Position Coupler Splice:The system consists of twodowel-in
rebars with extended length threads, a US/MCcoupler, and two US/MC
lock nuts. A lock nut and coupler isfully threaded onto one bar.
The second lock nut is threadedonto the second bar to the position
where the coupler will buttthe lock nut in its final position. The
second bar is butted tothe end of the first bar and the coupler and
first lock nut isreverse threaded onto the second bar to the
couplers final
position. The bars are rotated to the final position and the
locknuts are torqued clockwise against the coupler to a snug
tightcondition. See Figure 2 for details.
2.3.3 Transition Coupler Splice:The system consists oftwo
different diameter dowel-in rebars with standard lengththreads and
a US/MC welding coupler. The coupler is fullythreaded onto the
smaller rebar. The larger bar is butted tothe end of the small bar
and the coupler is reverse threadedonto the larger bar. The bars
are torqued clockwise togetherto a snug tight fit. See Figure 3 for
details.
2.3.4 Welding Coupler Splice:The system consists of a
dowel-in rebar with standard length threads and a US/MCwelding
coupler. The coupler is positioned against the surfaceto be
attached and welded with approved welds specified bythe engineer of
record. The dowel-in rebar is fully threadedinto the coupler and
torqued snug tight. See Figure 4 fordetails.
2.4 Special Inspection:
Coupler installation requires special inspection in
accordancewith Section 1701 of the code. The special inspector
verifiesthat the coupler is identified and installed as described
in thisreport. Verification must include rebar embedment and
thebolt tightening pattern.
2.5 Identification:
Each coupler is stamped wit the rebar size. Each bundle,pallet
or skid of couplers has a shipping tag bearing thecompany name of
Richmond Screw Anchor Company,product designation and size,
production lot number andinstallation instructions.
3.0 EVIDENCE SUBMITTED
Reports of static tensile and compressive load tests
andinstallation instructions.
4.0 FINDINGS
That the US/MC-SAE Mechanical Coupler Splice System
described in this report complies with the 1994 Uniform
Building Code, subject to the following conditions:
4.1 The splice locations shall comply with the code andshall be
detailed on plans approved by the building
official.
4.2 When a fire-resistive time period is required, the
concrete cover specified in Table 7-A of the code is
measured to the outside of the coupler where thebars are acting
in tension. In no case, however,
shall concrete cover be less than 3/4inch.
