SCB, SSB, SCBH & SCBV SWAY BRACE ANCHORS
SRC ROD STIFFENER CLAMP, SCBA ASSEMBLY, CCB CLEVIS CROSS BRACE
SAB & SAS ANCHOR BOLTS

Through the use of aircraft cable with swivel anchors, piping, ductwork and suspended equipment can be safely prevented from swinging out of control during earthquakes or when exposed to wind.

Cable braces are designed so when they are installed with sufficient slack they do not interfere with neoprene or spring isolator function but effectively control movement, preventing equipment detachment and excessive damage.

                  Mason Type SCB Data Sheet

Ratings are from test data and calculations used to obtain California OSHPD Preapproval Number R-0202.  Testing was supervised and certified by an independent engineer registered in the state of California.

Ratings are based on attachment to steel.

Ratings will be controlled by attachment methods to concrete.

                 Mason Type SSB Data Sheet

Swivel ended anchors simplify installations as braces do not have to be cut to exact length.  The anchor will swivel to provide solid anchorage when bolting.

Ratings are from test data and calculations used to obtain California OSHPD Preapproval Number R-0202.  Testing was supervised and certified by an independent engineer registered in the state of California.

Ratings are based on attachment to steel.

Ratings will be controlled by attachment methods to concrete.

                Mason Type SCBH Data Sheet

Cables can only be used in tension so a hook does not slide off.  A hooked end provides for quick attachment to hanger rods without removing clevis bolts or trapeze rods.

Ratings are from test data and calculations used to obtain California OSHPD Preapproval Number R-0202.  Testing was supervised and certified by an independent engineer registered in the state of California.

Ratings are based on attachment to steel.

SCBH assemblies will fit rod sizes as tabulated.

Preferred installation angle is 45 degrees.  Maximum variation +15 degrees.

                    Mason Type SCBV Data Sheet

The SCBV can be used with either an SCB or SCBH on the other end.  Clamping to beam flanges eliminates drilling or welding and generally presents a cost savings.

Ratings are from test data and calculations used to obtain California OSHPD Preapproval Number R-0202.  Testing was supervised and certified by an independent engineer registered in the state of California.

Ratings are based on attachment to steel.

SCBH assemblies will fit rod sizes as tabulated.

Preferred installation angle is 45 degrees.  Maximum variation +15 degrees.

NOTE:  Not to be used as a vertical hanger for equipment, ductwork or piping.  To be used as a seismic restraint only.

Controlling sway is frequently not enough to insure safety.  Rod stiffeners such as angle attached with seismic rod clamps (RSC) prevent suspended rods from buckling from vertical movements.  Mason isolation hangers which have vertical limit stops should be used to minimize travel and reduce damage due to excessive acceleration.   These vertical limit stops are standard on all Mason precompressed (PC-prefixed) isolation hangers.

                                 Mason Type SRC Data Sheet

SAB & SAS

Anchorage of equipment in seismic zones is an important part of system restraint.  When anchoring to concrete there are a variety of methods available.   Our in depth research has revealed the best attachments for seismic zones are made with the wedge type expansion anchors.  They provide the highest design load for the smallest hole size.  Since they are load assisted, they provide excellent resistance to vibration and shock loads.  Their slip potential is actually a positive feature in seismic applications giving early warning of potential failure whereas other anchors just fail catastrophically.

Mason offers two types of wedge anchors.  Our SAB seismic anchor bolt is a female wedge utilizing a cap screw to fasten to equipment.  This design is for use with restrained mounts where periodic removal and inspection of the mounts may be required.  The benefit is that they do not require lifting of mounts or equipment over a stud.

Mason's SAS seismic anchor stud is the same wedge design as the SAB anchor but with a stud instead of bolt, for attachment.  We offer this form for suspension applications such as with our SCB, seismic cable brace system, for use on piping and suspended equipment.

                             Mason Type SAB Data Sheet

*These tension values are applicable when the anchors are installed with special inspection as set forth in Section 306 of the UBC code.

Shear and Tension values are for anchors installed in stone aggregate concrete having 3000 PSI minimum compressive strength at the time of installation.

Values are for anchors installed with a minimum spacing of 12 diameters on center and with a minimum edge distance of six diameters.  Spacing may be reduced to six diameters provided the values are reduced 50 percent.  Edge distance may be reduced to three diameters provided the values for shear are reduced 50% and the values for tension are reduced 30%.  Linear interpolation may be used for intermediate spacings and edge margins.

Ratings may not be increased to accommodate periodic loads such as those from wind or seismic forces.

                                       Mason Type SAS Data Sheet

*Testing is being completed for 3000 psi.

*These tension values are applicable when the anchors are installed with special inspection as set forth in Section 306 of the UBC code.

Values are for anchors installed with a minimum spacing of 12 diameters on center and with a minimum edge distance of six diameters.  Spacing may be reduced to six diameters provided the values are reduced 50 percent.  Linear interpolation may be used for intermediate spacings and edge margins.

Ratings may not be increased to accommodate periodic loads such as those from wind or seismic forces.