Transmission Framing

Shield Wire Tie Angles

Download PDF

BROOKS has a wide variety of tie angle assemblies to meet any H-Frame requirement. All angles are furnished standard with U Bolts, Forged Chain Links, and Bonding Bolts factory assembled, unless noted otherwise. Steel angle confirms to ASTM A-36 specifications and is hot dipped galvanized to ASTM A-153 standards. 

Please contact BROOKS' Engineering Department to discuss application and to find the correct tie angle to meet your needs.

Crossarm Assemblies

Download PDF

Tangent Crossarm Assemblies utilize many crossarm sizes and hardware components. Please contact BROOKS with your specific design requirements.

Many of our standard single and double crossarms can now be found in PLS.  For engineering details and use within PLS, please visit http://www.powline.com/files/pls_pole.html to download Brooks Manufacturing's Crossarm Library.  Any questions regarding the software, visit http://www.powline.com/products/pls_pole.html.

Face Mounted Braces

Download PDF

BROOKS face mounted braces are typically furnished in pairs. Individual left or right hand units may be ordered as indicated by the examples below. Face Mounted Braces are equally suited for installation under or above the crossarm for both single pole and H-frame applications. When positioned below the crossarm, the orientation of left and right hand assembly appears normal. In the inverted application, the orientation related to right and left hand is reversed.

For engineering details and use within PLS, please visit http://www.powline.com/files/pls_pole.html to download Brooks Manufacturing's Brace Library.  Any questions regarding the software, visit http://www.powline.com/products/pls_pole.html.

Knee and Vee Braces

Download PDF

The following examples illustrate typical installations for Knee and Vee Brace applications. Knee Bracing is generally used with single arm construction, having one end attached to the side of the pole, and the other end to the top or bottom face of the single crossarm. The end fitting mounting plates on Knee Braces are perpendicular or approximately perpendicular to each other. 

Vee Bracing, by comparison, is generally used with double arm construction, with one end attached to the side of the pole, and the other end to the side of a spacer fitting. Because of the variance in slope of the brace mounting plane on the spacer fitting body, care must be taken when selecting the end fitting angle for the spacer fitting end. 

Knee and Vee Braces may be ordered by the catalog number developed from codes in the tables below, or by the brace type and series along with complete descriptive data. A catalog number indicates "each" units.

For engineering details and use within PLS, please visit http://www.powline.com/files/pls_pole.html to download Brooks Manufacturing's Brace Library.  Any questions regarding the software, visit http://www.powline.com/products/pls_pole.html.

Tension Braces

Download PDF

BROOKS Tension Braces are typically used to support the outside phase positions on H-Frames carrying the heavy loads associated with bundled conductors on long vertical spans. These braces use pinned-end clevis type fittings which can efficiently transfer the high tensile loads into adjacent structure components without developing connection fatigue problems which can occur with other semi-fixed connections.

BROOKS Tension Braces may be combined with compatible sized turnbuckles to develop an adjustable length brace. BROOKS can supply the turnbuckles along with your Tension Brace order. Tension Braces may be ordered by the catalog number developed from the Ordering Codes shown below, or by Brace Series along with complete descriptive data. A catalog number indicates "each" units.

For engineering details and use within PLS, please visit http://www.powline.com/files/pls_pole.html to download Brooks Manufacturing's Brace Library.  Any questions regarding the software, visit http://www.powline.com/products/pls_pole.html.

Combination Tension Vee Braces

Download PDF

BROOKS combination Tension Vee Braces combine end fitting features of Tension Braces and Knee or Vee Braces. Combination braces are used for applications where it is advantageous for one end of the brace to connect to a tee while the other end attaches to the side of a spacer fitting, or to other similar structure components.

Combination braces may be combined with compatible sized turnbuckles available from BROOKS, for critical length adjustment. Combination braces may be ordered by the catalog number developed from the codes shown in the table below, or by the brace Series along with descriptive data. The catalog number indicates "each" units.

For engineering details and use within PLS, please visit http://www.powline.com/files/pls_pole.html to download Brooks Manufacturing's Brace Library.  Any questions regarding the software, visit http://www.powline.com/products/pls_pole.html.

X-Braces

Download PDF

BROOKS' tradition of producing dependable engineered products is vividly evident in our diverse line of wood X-Braces. Our solid engineering commitment and decades of wood structure design and testing provide the experience and knowledge necessary to select the proper bracing to meet both your strength and budget requirements.

Typical X-Braced H-Frame Structure

A set of wood X-Braces is the most economical method of fully developing the transverse capacity of an H-Frame structure. Wood members provide the required tensile and compressive strength without sacrificing the "BIL" levels associated with wood construction. The wide range of X-Brace styles provides the transmission designer an optimum match for the given pole spacing and pole class required for the specific job through 345kV construction. BROOKS Engineering Department will work with you on applications of these standard X-Braces or a custom designed X-Brace to meet your individual needs.

Our ready access to both solid sawn and reliable conventional glued laminated coast region Douglas fir, combined with our flexibility in hardware designs, allows easy selection of BROOKS bracing to match your existing system standards. 

X-Braces should be ordered by specifying center-to-center pole spacings. All X-Brace members are shipped factory assembled with static proof Fittings locked securely in place. Unless specified otherwise, all necessary mounting hardware required to install the assembly is included. Typical length mounting bolts have been pre-selected as noted by each style and will be shipped with the braces unless specified differently on the order. Refer to the Ordering Codes shown at the bottom of this page, which explain other variations of ordering available for special applications or component combinations.

BROOKS has many other proven designs in addition to those illustrated. We welcome the opportunity to review your structure requirements or system standards to recommend the best X-Braces for your applications.

For engineering details and use within PLS, please visit http://www.powline.com/files/pls_pole.html to download Brooks Manufacturing's Brace Library.  Any questions regarding the software, visit http://www.powline.com/products/pls_pole.html.

X-Brace Center Clamps

Download PDF

Center Clamps are furnished as sets of 2 straps and 2 shoulder rods, shipped complete with Nuts and Locknuts.

Center Clamps function equally well when installed in either the vertical or horizontal plane. However, by mounting the Center Clamp straps in a horizontal plane, risk of damaging fallen conductor at the center phase is reduced.

Structure Applications & Designs

BROOKS Manufacturing Co. is much more than a manufacturer of quality distribution crossarms and braces.  For over 40 year BROOKS has been designing and manufacturing transmission products for applications including individual components, structure framing kits or complete structures through 345kV construction.  The cornerstone of BROOKS product designs is proper application of sound engineering principles, verified by full scale testing, and backed by many years of successful field installations.  BROOKS engineers will match your existing framing designs or work with you on custom designed applications to meet your specific requirements.

Download the PDF below for more information.

Download PDF
Shield Wire Tie Angles
Shield Wire Tie Angles
Crossarm Assemblies
Crossarm Assemblies
Face Mounted Braces
Face Mounted Braces
Knee and Vee Braces
Knee and Vee Braces
Tension Braces
Tension Braces
Combination Tension Vee Braces
Combination Tension Vee Braces
X-Braces
X-Braces
X-Brace Center Clamps
X-Brace Center Clamps
Structure Applications & Designs
Structure Applications & Designs