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General

8of the NEMA TS2 Standard. A full complement of BIUs meeting Section 5.3.1.4

WV · 2023 Standard SpecificationsBook pages 964969View official source ↗

715.42.8 8.3 -Flash Transfer Relays: All flash transfer relays shall meet t he

requirements of Section 6.4 of the NEMA TS2 Standard. The coil of the flash transfer relay must be de -energized for flash operation. The full complement of relays shall be supplied with each cabinet to allow for maximum phase utilization for which the cabinet is designed.

715.42.8 8.4 -Malfunction Management Units (MMU): Each cabinet assembly shall

be supplied with one MMU as defined by the requirements of Section 4 of the NEMA TS2 Standard. Malfunction Management Units shall be a Type 16. The MMU s hall be Model MMU - 16 (EDI Model MMU -16) or approved equal.

715.42.8 8.5 -Bus Interface Units (BIU): All BIUs shall meet the requirements of

Section 8 of the NEMA TS2 Standard. A full complement of BIUs meeting Section 5.3.1.4 if the NEMA Publication No . TS2 -2003 shall be supplied per cabinet. Bus Interface Units shall be supplied with each cabinet to allow for maximum phase and function utilization for which the cabinet is designed. A minimum of 3 BIUs shall be provided for each cabinet. Each Bus Inte rface Unit shall include power on, transmit and valid data indicators - all indicators shall be LEDs. A Type 1 Interface shall be defined as defined by Section 5.3, the controller interface shall conform to the Standard Publication NO. TS2 -2003.

715.42 8.8.6 -Cabinet Power Supply: The Cabinet power supply shall meet the

requirements of Section 5.3.5 of the NEMA TS2 Standard. The Cabinet Power supply shall provide LED indicators for the line frequency, 12 VDC, 12 VAC, and 24 VDC outputs. The cabinet pow er supply shall provide (on the front panel) jack plugs for access to the +24 VDC for test purposes. Cabinet power supply shall be provide with each cabinet assembly per manufacturer’s specifications. And be wired directly to the Power Bus Assembly via a 12-pin Molex Robotic type connector Model# 54332 -1270 or exact equivalent.

715.42.8 9 -Testing: Each controller and cabinet assembly shall be tested as a complete

entity under signal load for a minimum of 48 hours. Each assembly shall be delivered with a signed document detailing the cabinet final tests performed. The cabinet shall be assembled and tested by the controller manufacturer or authorized local distributor to ensure proper component integration and operation.

715.42.8 10 -War ranty: The controller and Malfunction Management Unit shall be

warranted by the manufacturer against mechanical and electrical defects for a period of two years from date of shipment. The manufacturer's warranty shall be supplied in writing with each cabi net and controller. Second party extended warranties are not acceptable. The cabinet assembly and all other components shall be warranted for a period of one year from date of shipment. Any defects shall be corrected by the manufacturer at no cost to the owner.

715.42.9 Signal Supports: Signal supports shall be certified to be equal or exceed the

requirements of "Standard Specifications for Structural Supports for Highway Signs, 943 Luminaires and Traffic Signals", including revisions, of the American Association of State Highway and Transp ortation Officials (AASHTO).

715.42.9 1-Mast Arm Signal Supports (Type A1, A1L, A2, A2L, B1 and B1L):

715.42.9 1.1-General Description: Mast arm supports Types A1, A2 and B1 shall

consist of one two traffic signal mast arms (as designated on the Plan s), an upright pole with anchor base and any other accessories or hardware as required to make a complete installation. They shall be designed to suspend traffic signals from a structural assembly similar in appearance and construction to that shown on th e standard drawing which is part of the contract. Mast arm supports Types A1L, A2L and B1L shall be identical to Types A1, A2 and B1 described above, except for the upright pole which shall be lengthened and provided with one or more street lighting lumin aire arms as called for on the Plans. The upright pole length shall be governed by the mounting height specified for the luminaire and the rise provided in the luminaire arm. The luminaire arm, unless otherwise noted, shall be as similar as possible in st yle to that shown on the standard drawing and shall have the spread noted on the Plans. All upright poles and all mast arms shall be made of one continuous piece, cylindrical in cross section, and they shall be uniformly tapered from butt to tip approxima tely one (1) inch in diameter for each seven linear feet in length (0.14 in ch per foot). The shaft length and diameter of the upright pole and mast arm shall be as described on the Plans.

715.42.9 1.2-Mast Arm: All mast arms shall include a removable e nd cap, grommeted

wire outlets, signal hanger assemblies of the type and quantity shown on the Plans, and a flange plate welded to the butt end to provide a rigid connection to the upright pole. The rigid connection to the upright pole shall be constructe d so that it develops and transfers the full strength of the mast arm to the upright pole. The flange plate shall have four holes for the flange bolts which shall match the four tapped holes in the mounting plate on the upright pole. The entire assembly shall be constructed so that all wiring can be concealed internally. It shall be as similar, as possible in appearance and construction detail to that shown on the standard drawing. The use of guy rods of any type, or trussed -type arms, will not be permit ted (except when noted for luminaire arms on the Plans). Mast arms shall be connected to the upright pole at a height necessary to provide 17°foot-0°inch clearance under the signals. The mast arm and upright pole shall be constructed so that the mast arm at any point along its length (measured from the flange plate connection), will fall within a tolerance of 0 to 5 percent (0-5%%) of that length, above the true horizontal position, after loading as called for on the Plans. The fabricator must certify to the above and maintain results of computations or tests to document the certification for each type of mast -arm pole supplied. On Types B1 and B1L this requirement will only apply to the outboard end of the mast arm. Any deviations from this requirement due to sizes or loads listed on the Plans shall be brought to the Division's attention for appropriate corrective action prior to fabrication.

715.42.9 1.3-Upright Pole: Each pole shall consist of an upright shaft with a steel

anchor base, a removable pole top, a J -hook wire support welded inside near the top, a handhole with reinforced frame and cover, anchor bolts and nuts, one flange plate assembly to match that welde d to the butt end of each mast arm, and any other accessories or 944 hardware as required to make a complete installation. Flange plates shall have a deburred wiring hole and four tapped holes for flange bolts. The handhole assembly shall be welded into the shaff near the base. The handhole reinforcing frame shall have a tapped hole to accommodate a grounding lug and contain a keeper chain. The keeper chain shall be secured by pop rivets or stainless steel screws. The cover shall be secured to the frame by at least two stainless steel screws. Each pole shall have a one -piece anchor base welded to the butt end. This base shall be designed to secure the pole assembly to a concrete foundation by means of four standard anchor bolts, each fitted with removable anchor bolt covers. All construction details shall be as similar as possible to that shown on the standard drawing.

715.42.9 1.4-Materials Incorporated into the Support: The structures described

above shall be fabricated from steel. The only exceptions permitted will be where the Contractor may prefer to use a cast aluminum pole top or aluminum anchor bolt covers, or both, on a galvanized steel pole. All steel tubes fo r arms and poles shall be fabricated from ASTM A595, Grade A or A1011, Grade 55, Class 2 or A572, Grade 55. Miscellaneous steel materials required for fabrication of other structural components shall be of a weldable quality and shall be covered physicall y and chemically by an applicable ASTM Specification. This includes welding rod, plate and bar stock (for flanges, signal hangers, etc.) and casting for anchor bases. Anchor bolts shall be fabricated from steel meeting the requirements of ASTM F1554, Grade 55. Each bolt shall be provided with two regular nuts or heavy hex nuts that shall be hot dipped galvanized. Hex nuts shall be regular hex meeting ASTM A563 Grade A for ¼” to 1½” sizes and shall be heavy hex for sizes 1½” to 4”. All mast -arm signal s upports shall be provided with a one -piece, anchor -type base. The base shall be fabricated from material meeting ASTM A27, Grade 65 -35, or ASTM A36 of sufficient cross section to fully develop the ultimate strength of the pole. The base shall be fastened to the pole by means of a welded connection and shall develop the full strength of the pole. The base shall be provided with four holes of sufficient size to accommodate the proper size anchor bolts that are capable of resisting at yield strength stress, the bending moment of the shaft at its yield strength stress. Four removable anchor bolts covers shall be provided. All steel components shall be galvanized after fabrication in accordance with ASTM A123 or A153. Galvanized coatings damaged for any rea son shall be repaired by the application of a zinc -rich paint, conforming with subsection 711.21 of the Specifications. The places to be painted shall be thoroughly cleaned before the paint is applied. All nuts, bolts or screws used to connect any alumin um components shall be passivated stainless steel meeting the requirements of AISI 300 series, commercial grade. All nuts, bolts (except anchor bolts), or screws used to connect steel components shall meet the following requirements:

i.Less than 5/8 in ch diameter shall be ASTM A307 and plated in accordance with ASTM B633, or stainless steel. An exception to this will be the two screws fastening the handhole cover, which shall be stainless steel in accordance with the description above. 945 ii. For 5/8 in ch diamet er and over, any ASTM physical and chemical qualification that is acceptable to the Division on the basis of structural design requirements and hot - dipped galvanized in accordance with ASTM A153.

715.42.9 1.5 -Drawings for Approval Purposes: Two prints o f shop drawings

indicating the proposed dimensions and material specifications for each of the components involved shall be submitted by the Contractor for approval purposes within three weeks after the award of the Contract. These drawings will be review ed by the Division at the earliest possible date and one print will be returned marked "Approved," or "Returned for Revisions as Noted." Eight sets of drawings shall then be submitted for final approval. Appropriate action shall be taken by the Contracto r after final approval to insure that the earliest possible erection of these items can be achieved. Resubmission of drawings to obtain final approval by the Division will not be considered as being just cause for delay in the completion of any contract.

715.42.9 1.6-Mill Test Reports and Certification: Mill test reports or certifications

of conformance to specifications for materials and design will be required for all materials incorporated into the work. The following shall be supplied by the Contra ctor prior to acceptance of the structures:

715.42.9 1.6.1: Mill test reports (MTR) for major structural items only, as noted in the

following chart, shall include both physical and chemical descriptions of the materials as supplied to the fabricator. When physical properties are altered during fabrication, the MTR covering chemical composition shall be supplemented by certified test reports indicating the physical properties of this material after fabrication.

715.42 9.1.6.2: Certification of conformance to the specifications for all remaining

material not co vered by MTR as noted in the following chart. See 715.42.9 .1.6.1 See 715.42.9 .1.6.2 Component Materials MTR CERTIFICATIONS Tubes for arms and poles X Base castings X Anchor bolts X Pole tops, misc. fittings and hardware X Fabricated or cast-type arm connections X Galvanizing Welding rod X

715.42.9 1.6.3: Certification of conformance to the specifications for the design of all

components not completely dimensioned and detailed on the standard drawings.

715.42.9 1.6.4: Certification that all welding was performed by operators qualified as

follows: stee l welders to AWS and aluminum welders to ASME.

715.42.9 2-Strain Pole Signal Supports (Types C1, C1L, C2 and C2L):

715.42.9 2.1-General Description: Each strain pole support Type C1 and C2 shall

consist of an upright shaft with steel anchor base, a rem ovable pole top, a J -hook wire 946 support welded inside near the top, a 45 degree wire inlet near the top, a handhole with reinforced frame and cover, anchor bolts and nuts and any other accessories or hardware as required to make a complete installation. Th e pole and all its component parts shall be designed to support free -swinging traffic signals suspended from a span wire assembly. It shall be as similar as possible in appearance and construction detail to that shown on the standard drawing which is part of the contract. Each strain pole support Type C1L and C2L shall be identical to the type C1 and C2 described above, except that the upright pole shall be lengthened and provided with one or more street lighting luminaire arms as called for on the Plans . The shaft length of the Type C1L and C2L pole shall be governed by the mounting height specified for the luminaire and the rise provided in the luminaire arm. The luminaire arm, unless otherwise noted, shall be as similar as possible in style to that s hown on the standard drawing and shall have the spread noted on the Plans. The upright shaft shall be made in one continuous piece, cylindrical in cross section and shall be uniformly tapered from butt to tip approximately one ( 1) inch in diameter for each seven (7) linear feet in length (0.14 in ch per f oot). The diameter shall be measured outside to outside of the cylinder. No horizontal joints of any type will be permitted. The shaft length and diameter of the Type C1, C1L, C2 and C2L poles shall be as described on the Plans. The signal clearance will be set for a minimum of seventeen (17) feet. The span wire will be fastened from twelve ( 12) to eighteen ( 18) inches from the top of the pole, except for the Type C1L and C2L poles, where the span wire height shall be as specified on the Plans.

715.42.9 2.2-Materials Incorporated into the Support: The entire strain pole

assembly shall be made from steel. The only exceptions permitted will be where the Contractor may prefer to use a cast aluminum pole cover or aluminum anchor bolt covers, or both, on a galvanized steel pole. The upright shaft shall be fabricated from ASTM A595, Grade A or A1011, Grade 55, Class 2 or A572, Grade 55. The minimum wall thickness shall be 0.1793 in ch (7 gage). Miscellaneous steel material required for fabrication of other structural components shall be of a weldable quality and shall be covered physically and chemically by an applicable ASTM Specification. This includes welding rod, plate or bar stock (for span wire clamps, etc.) and castings for anchor bases. Anchor bolts shall be fabricated from steel meeting the requirement of ASTM F1554, Grade 55. Each bolt shall have the threaded end galvanized for a length sufficient to extend down through the grout and into the concrete foundation. Each bolt shall be provided for two regular nuts or heavy hex nuts that shall be hot dipped galvanized. Hex nuts shall be regular hex meeting ASTM A563 Grade A for ¼” to 1½” sizes and shall be heavy hex for sizes o ver 1½” to 4”. All strain pole signal supports shall be provided with a one -piece anchor type base. The base shall be fabricated from material meeting ASTM A27, Grade 65 -35 or ASTM A36 of sufficient cross section to fully develop the ultimate strength of the pole. The base shall be fastened to the pole by means of a welded connection and shall develop the full strength of the pole. The base shall be provided with four holes of sufficient size to accommodate the proper size anchor bolts that are capable of resisting at yield strength stress, the bending movement of the shaft at its yield strength stress. Four removable anchor bolt covers shall be provided. 947 All steel components shall be galvanized after fabrication in accordance with ASTM A123 or A153. Galvanized coatings damaged for any reason shall be repaired by the application of a zinc -rich paint conforming with Section 711.21 of the Specifications. The places to be painted shall be thoroughly cleaned before the paint is applied. All nuts, bolts ( except anchor bolts), or screws used to connect steel components shall meet the following requirements:

i.Less than ⅝ inch diameter shall be ASTM A307 and plated in accordance with ASTM B633, or stainless steel. An exception to this will be the two screws f astening the handhold cover which shall be stainless steel. ii. For ⅝ inch diameter and over, any ASTM physical and chemical qualification that is acceptable to the Division on the basis of structural design requirements and hot - dipped galvanized in accordance with ASTM A153.

715.42.9 2.3-Drawings for Approval Purposes: Two prints of shop drawings

indicating the proposed dimensions and material specifications for each of the components involved shall be submitted by the Contractor for approval purposes withi n three weeks after the award of contract. These drawings will be reviewed by the Division at the earliest possible date and one print will be returned marked "Approved," or "Returned for Revisions as Noted." Eight sets of drawings shall then be submitte d for final approval. Appropriate action shall be taken by the Contractor after final approval to insure that the earliest possible erection of these items can be achieved. Resubmission of drawings to obtain final approval by the Division will not be con sidered as being just cause for delay in the completion of any contract.

715.42.9 2.4-Mill Test Reports and Certification: Mill test reports or certifications

of conformance to specifications for materials and design will be required for all materials incorporated into the work. The following shall be supplied by the Contractor prior to acceptance of the structures: 715.4 2.9.2.4.1: Mill test reports (MTR) for major structural items only, as noted in the following chart, shall include both physical and chemical descriptions of the materials s supplied to the fabricator. When physical properties are altered during fabricat ion, the MTR covering chemical composition shall be supplemented by certified test reports indicating the physical properties of this material after fabrication.

715.42.9 2.4.2: Certification of conformance to the specifications for all remaining

material not covered by MTR as noted in the following chart. See 715.42.9 .2.4.1 See 715.42.9 .2.4.2 COMPONENT MATERIALS MTR CERTIFICATIONS Tubes for upright shafts X Base castings X Anchor bolts X Pole tops, misc. fittings and hardware X Fabricated or cast -type arm connections X Galvanizing Welding rod X

Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 964969 of 1,006.