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Bases, Subbases & Subgrades

3201020.04.3.1.2 Hanger Plate:

LA · 2016 Standard SpecificationsBook pages 11431144View official source ↗

1020.04.3 1.2 Hanger Plate:

A hanger plate and horizontal boss shall be at the tip of the arm. The arm shall have an up -sweep design. Design load on the arm shall be sufficient to place a signal head at each boss.

1020.04.3 1.3 Design Requirements: For establishing the

loads, applied to each structure, the weights and projected areas of Table 1020 -5 shall be used for traffic signal heads. Table 1020 -5 Steel Signal Support Standards Design Requirements Projected Area Per Signal Type1 Design Weight Per Signal, pounds1 Less Backplates, square feet Backplates, square feet 1-Way, 3 Section 1-Way, 4 Section 2-Way, 3 + 3 Sections 3-Way, 3+3+3 Sections 4-Way, 3+3+3+3 Sections 4.8 6.6 8.7 13.35 13.2 8.9 11.2 12.2 15.6 15.6 1When signal heads of a type different from that shown above are used, the weights and projected area shown above shall be increased for the equipment proposed for use. Adjusted values shall be based on the use of 12 -inch diameter lenses and backplates (when used) extending 5 inches beyond signal enclosure.

1020.04.3 1.4 Standard Shaft: The standard shaft base shall

have a minimum diameter of 11 inches. Mast arm standards shall be provided with a transformer type base. Each pole shall be bolted to transformer base with four hex head bolts with two washers and one nut for each bolt.

1020.04.3 1.5 Transformer Base: The transformer base

shall be approximately 20 inches high. The top of the transformer base shall have four 1 1/2 -inche s-by-2 1/2 -inches slots for bolting the pole to the transformer base. The 2 1/2 -inches dimension of the slot shall be centered

1020.04.3 1.2 Hanger Plate:

A hanger plate and horizontal boss shall be at the tip of the arm. The arm shall have an up -sweep design. Design load on the arm shall be sufficient to place a signal head at each boss.

1020.04.3 1.3 Design Requirements: For establishing the

loads, applied to each structure, the weights and projected areas of Table 1020 -5 shall be used for traffic signal heads. Table 1020 -5 Steel Signal Support Standards Design Requirements Projected Area Per Signal Type1 Design Weight Per Signal, pounds1 Less Backplates, square feet Backplates, square feet 1-Way, 3 Section 1-Way, 4 Section 2-Way, 3 + 3 Sections 3-Way, 3+3+3 Sections 4-Way, 3+3+3+3 Sections 4.8 6.6 8.7 13.35 13.2 8.9 11.2 12.2 15.6 15.6 1When signal heads of a type different from that shown above are used, the weights and projected area shown above shall be increased for the equipment proposed for use. Adjusted values shall be based on the use of 12 -inch diameter lenses and backplates (when used) extending 5 inches beyond signal enclosure.

1020.04.3 1.4 Standard Shaft: The standard shaft base shall

have a minimum diameter of 11 inches. Mast arm standards shall be provided with a transformer type base. Each pole shall be bolted to transformer base with four hex head bolts with two washers and one nut for each bolt.

1020.04.3 1.5 Transformer Base: The transformer base

shall be approximately 20 inches high. The top of the transformer base shall have four 1 1/2 -inche s-by-2 1/2 -inches slots for bolting the pole to the transformer base. The 2 1/2 -inches dimension of the slot shall be centered

1020.04.3 1.2 Hanger Plate:

A hanger plate and horizontal boss shall be at the tip of the arm. The arm shall have an up -sweep design. Design load on the arm shall be sufficient to place a signal head at each boss.

1020.04.3 1.3 Design Requirements: For establishing the

loads, applied to each structure, the weights and projected areas of Table 1020 -5 shall be used for traffic signal heads. Table 1020 -5 Steel Signal Support Standards Design Requirements Projected Area Per Signal Type1 Design Weight Per Signal, pounds1 Less Backplates, square feet Backplates, square feet 1-Way, 3 Section 1-Way, 4 Section 2-Way, 3 + 3 Sections 3-Way, 3+3+3 Sections 4-Way, 3+3+3+3 Sections 4.8 6.6 8.7 13.35 13.2 8.9 11.2 12.2 15.6 15.6 1When signal heads of a type different from that shown above are used, the weights and projected area shown above shall be increased for the equipment proposed for use. Adjusted values shall be based on the use of 12 -inch diameter lenses and backplates (when used) extending 5 inches beyond signal enclosure.

1020.04.3 1.4 Standard Shaft: The standard shaft base shall

have a minimum diameter of 11 inches. Mast arm standards shall be provided with a transformer type base. Each pole shall be bolted to transformer base with four hex head bolts with two washers and one nut for each bolt.

1020.04.3 1.5 Transformer Base: The transformer base

shall be approximately 20 inches high. The top of the transformer base shall have four 1 1/2 -inche s-by-2 1/2 -inches slots for bolting the pole to the transformer base. The 2 1/2 -inches dimension of the slot shall be centered

1020.04.3 1.2 Hanger Plate:

A hanger plate and horizontal boss shall be at the tip of the arm. The arm shall have an up -sweep design. Design load on the arm shall be sufficient to place a signal head at each boss.

1020.04.3 1.3 Design Requirements: For establishing the

loads, applied to each structure, the weights and projected areas of Table 1020 -5 shall be used for traffic signal heads. Table 1020 -5 Steel Signal Support Standards Design Requirements Projected Area Per Signal Type1 Design Weight Per Signal, pounds1 Less Backplates, square feet Backplates, square feet 1-Way, 3 Section 1-Way, 4 Section 2-Way, 3 + 3 Sections 3-Way, 3+3+3 Sections 4-Way, 3+3+3+3 Sections 4.8 6.6 8.7 13.35 13.2 8.9 11.2 12.2 15.6 15.6 1When signal heads of a type different from that shown above are used, the weights and projected area shown above shall be increased for the equipment proposed for use. Adjusted values shall be based on the use of 12 -inch diameter lenses and backplates (when used) extending 5 inches beyond signal enclosure.

1020.04.3 1.4 Standard Shaft: The standard shaft base shall

have a minimum diameter of 11 inches. Mast arm standards shall be provided with a transformer type base. Each pole shall be bolted to transformer base with four hex head bolts with two washers and one nut for each bolt.

1020.04.3 1.5 Transformer Base: The transformer base

shall be approximately 20 inches high. The top of the transformer base shall have four 1 1/2 -inche s-by-2 1/2 -inches slots for bolting the pole to the transformer base. The 2 1/2 -inches dimension of the slot shall be centered

1020.04.3 1.2 Hanger Plate:

A hanger plate and horizontal boss shall be at the tip of the arm. The arm shall have an up -sweep design. Design load on the arm shall be sufficient to place a signal head at each boss.

1020.04.3 1.3 Design Requirements: For establishing the

loads, applied to each structure, the weights and projected areas of Table 1020 -5 shall be used for traffic signal heads. Table 1020 -5 Steel Signal Support Standards Design Requirements Projected Area Per Signal Type1 Design Weight Per Signal, pounds1 Less Backplates, square feet Backplates, square feet 1-Way, 3 Section 1-Way, 4 Section 2-Way, 3 + 3 Sections 3-Way, 3+3+3 Sections 4-Way, 3+3+3+3 Sections 4.8 6.6 8.7 13.35 13.2 8.9 11.2 12.2 15.6 15.6 1When signal heads of a type different from that shown above are used, the weights and projected area shown above shall be increased for the equipment proposed for use. Adjusted values shall be based on the use of 12 -inch diameter lenses and backplates (when used) extending 5 inches beyond signal enclosure.

1020.04.3 1.4 Standard Shaft: The standard shaft base shall

have a minimum diameter of 11 inches. Mast arm standards shall be provided with a transformer type base. Each pole shall be bolted to transformer base with four hex head bolts with two washers and one nut for each bolt.

1020.04.3 1.5 Transformer Base: The transformer base

shall be approximately 20 inches high. The top of the transformer base shall have four 1 1/2 -inche s-by-2 1/2 -inches slots for bolting the pole to the transformer base. The 2 1/2 -inches dimension of the slot shall be centered on and perpendicular to a 13 1/2 -inches bolt circle. A removal panel on the side of the transformer base shall be provided for access to the base. A 1/2 -inch -13NC grounding nut shall be provided 90 degrees left of this panel. A U.L. approved grounding lug shall be provided with each pole. Ground lug shall accept a #6 AWG solid bare copper ground wire. The bottom of the transform er base shall fit a 16 -inches bolt circle using four 1 3/4 -inches bolts supplied with each pole. These bolts shall conform to these specifications and plan details with exception that the cap nuts shall be replaced with the regular hex nuts. The transfor mer base shall be capable of being rotated 360 degrees.

1020.04.3 1.6 Wireways: The pole shaft and mast arm shall

be suitable for wire ways throughout their length.

1020.04.3 1.7 Identification: The pole shaft, mast arm and

arms, and transformer base shall have a matching seria l number.

1020.04.3 2 55 Feet Single, 50 Feet x 35 Feet Dual and

Greater: Only Bolt -On Mast Arms & Dual Mast Arm Poles on the Traffic Operations Approved Products List will be accepted. The design shall meet the requirements of the 2009 edition AASHTO Standard Specification for Structural Supports for Highway Signs, Luminaries, and Traffic Signals. All mast arm designs will be approved by the State Traffic Signal Engineer. Mast arm assemblies, anchor bolts and hardware shall be hot dipped galvanized in accordance with Section 811 and all materials shall conform to the applicable provisions of Section 1013 .

1020.04.4 Anchor Bolts for Steel Signal Support Poles and

Standards For all strain poles and 55 feet or less mast arm, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 1 3/4 inches, 5 NC thread with a yield strength of 105 ksi, be hot dipped galvanized for the top 12 inches, and comply with ASTM F1554 Grade 105. Furnish one additional anchor bolt for acceptance testing by the Department. For 55 feet single, 50 feet x 35 feet dual and greater mast arms, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 2-1/4 inch, with a yield strength of 55 ksi, shall be hot dipped galvanized for the top 12 inches, and shall comply with ASTM F1554 Grade 55. Furnish one additional ancho r bolt for acceptance testing by the Department.

1020.04.5 Treated Timber Poles: Comply with Section 1014 .

on and perpendicular to a 13 1/2 -inches bolt circle. A removal panel on the side of the transformer base shall be provided for access to the base. A 1/2 -inch -13NC grounding nut shall be provided 90 degrees left of this panel. A U.L. approved grounding lug shall be provided with each pole. Ground lug shall accept a #6 AWG solid bare copper ground wire. The bottom of the transform er base shall fit a 16 -inches bolt circle using four 1 3/4 -inches bolts supplied with each pole. These bolts shall conform to these specifications and plan details with exception that the cap nuts shall be replaced with the regular hex nuts. The transfor mer base shall be capable of being rotated 360 degrees.

1020.04.3 1.6 Wireways: The pole shaft and mast arm shall

be suitable for wire ways throughout their length.

1020.04.3 1.7 Identification: The pole shaft, mast arm and

arms, and transformer base shall have a matching seria l number.

1020.04.3 2 55 Feet Single, 50 Feet x 35 Feet Dual and

Greater: Only Bolt -On Mast Arms & Dual Mast Arm Poles on the Traffic Operations Approved Products List will be accepted. The design shall meet the requirements of the 2009 edition AASHTO Standard Specification for Structural Supports for Highway Signs, Luminaries, and Traffic Signals. All mast arm designs will be approved by the State Traffic Signal Engineer. Mast arm assemblies, anchor bolts and hardware shall be hot dipped galvanized in accordance with Section 811 and all materials shall conform to the applicable provisions of Section 1013 .

1020.04.4 Anchor Bolts for Steel Signal Support Poles and

Standards For all strain poles and 55 feet or less mast arm, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 1 3/4 inches, 5 NC thread with a yield strength of 105 ksi, be hot dipped galvanized for the top 12 inches, and comply with ASTM F1554 Grade 105. Furnish one additional anchor bolt for acceptance testing by the Department. For 55 feet single, 50 feet x 35 feet dual and greater mast arms, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 2-1/4 inch, with a yield strength of 55 ksi, shall be hot dipped galvanized for the top 12 inches, and shall comply with ASTM F1554 Grade 55. Furnish one additional ancho r bolt for acceptance testing by the Department.

1020.04.5 Treated Timber Poles: Comply with Section 1014 .

on and perpendicular to a 13 1/2 -inches bolt circle. A removal panel on the side of the transformer base shall be provided for access to the base. A 1/2 -inch -13NC grounding nut shall be provided 90 degrees left of this panel. A U.L. approved grounding lug shall be provided with each pole. Ground lug shall accept a #6 AWG solid bare copper ground wire. The bottom of the transform er base shall fit a 16 -inches bolt circle using four 1 3/4 -inches bolts supplied with each pole. These bolts shall conform to these specifications and plan details with exception that the cap nuts shall be replaced with the regular hex nuts. The transfor mer base shall be capable of being rotated 360 degrees.

1020.04.3 1.6 Wireways: The pole shaft and mast arm shall

be suitable for wire ways throughout their length.

1020.04.3 1.7 Identification: The pole shaft, mast arm and

arms, and transformer base shall have a matching seria l number.

1020.04.3 2 55 Feet Single, 50 Feet x 35 Feet Dual and

Greater: Only Bolt -On Mast Arms & Dual Mast Arm Poles on the Traffic Operations Approved Products List will be accepted. The design shall meet the requirements of the 2009 edition AASHTO Standard Specification for Structural Supports for Highway Signs, Luminaries, and Traffic Signals. All mast arm designs will be approved by the State Traffic Signal Engineer. Mast arm assemblies, anchor bolts and hardware shall be hot dipped galvanized in accordance with Section 811 and all materials shall conform to the applicable provisions of Section 1013 .

1020.04.4 Anchor Bolts for Steel Signal Support Poles and

Standards For all strain poles and 55 feet or less mast arm, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 1 3/4 inches, 5 NC thread with a yield strength of 105 ksi, be hot dipped galvanized for the top 12 inches, and comply with ASTM F1554 Grade 105. Furnish one additional anchor bolt for acceptance testing by the Department. For 55 feet single, 50 feet x 35 feet dual and greater mast arms, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 2-1/4 inch, with a yield strength of 55 ksi, shall be hot dipped galvanized for the top 12 inches, and shall comply with ASTM F1554 Grade 55. Furnish one additional ancho r bolt for acceptance testing by the Department.

1020.04.5 Treated Timber Poles: Comply with Section 1014 .

on and perpendicular to a 13 1/2 -inches bolt circle. A removal panel on the side of the transformer base shall be provided for access to the base. A 1/2 -inch -13NC grounding nut shall be provided 90 degrees left of this panel. A U.L. approved grounding lug shall be provided with each pole. Ground lug shall accept a #6 AWG solid bare copper ground wire. The bottom of the transform er base shall fit a 16 -inches bolt circle using four 1 3/4 -inches bolts supplied with each pole. These bolts shall conform to these specifications and plan details with exception that the cap nuts shall be replaced with the regular hex nuts. The transfor mer base shall be capable of being rotated 360 degrees.

1020.04.3 1.6 Wireways: The pole shaft and mast arm shall

be suitable for wire ways throughout their length.

1020.04.3 1.7 Identification: The pole shaft, mast arm and

arms, and transformer base shall have a matching seria l number.

1020.04.3 2 55 Feet Single, 50 Feet x 35 Feet Dual and

Greater: Only Bolt -On Mast Arms & Dual Mast Arm Poles on the Traffic Operations Approved Products List will be accepted. The design shall meet the requirements of the 2009 edition AASHTO Standard Specification for Structural Supports for Highway Signs, Luminaries, and Traffic Signals. All mast arm designs will be approved by the State Traffic Signal Engineer. Mast arm assemblies, anchor bolts and hardware shall be hot dipped galvanized in accordance with Section 811 and all materials shall conform to the applicable provisions of Section 1013 .

1020.04.4 Anchor Bolts for Steel Signal Support Poles and

Standards For all strain poles and 55 feet or less mast arm, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 1 3/4 inches, 5 NC thread with a yield strength of 105 ksi, be hot dipped galvanized for the top 12 inches, and comply with ASTM F1554 Grade 105. Furnish one additional anchor bolt for acceptance testing by the Department. For 55 feet single, 50 feet x 35 feet dual and greater mast arms, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 2-1/4 inch, with a yield strength of 55 ksi, shall be hot dipped galvanized for the top 12 inches, and shall comply with ASTM F1554 Grade 55. Furnish one additional ancho r bolt for acceptance testing by the Department.

1020.04.5 Treated Timber Poles: Comply with Section 1014 .

on and perpendicular to a 13 1/2 -inches bolt circle. A removal panel on the side of the transformer base shall be provided for access to the base. A 1/2 -inch -13NC grounding nut shall be provided 90 degrees left of this panel. A U.L. approved grounding lug shall be provided with each pole. Ground lug shall accept a #6 AWG solid bare copper ground wire. The bottom of the transform er base shall fit a 16 -inches bolt circle using four 1 3/4 -inches bolts supplied with each pole. These bolts shall conform to these specifications and plan details with exception that the cap nuts shall be replaced with the regular hex nuts. The transfor mer base shall be capable of being rotated 360 degrees.

1020.04.3 1.6 Wireways: The pole shaft and mast arm shall

be suitable for wire ways throughout their length.

1020.04.3 1.7 Identification: The pole shaft, mast arm and

arms, and transformer base shall have a matching seria l number.

1020.04.3 2 55 Feet Single, 50 Feet x 35 Feet Dual and

Greater: Only Bolt -On Mast Arms & Dual Mast Arm Poles on the Traffic Operations Approved Products List will be accepted. The design shall meet the requirements of the 2009 edition AASHTO Standard Specification for Structural Supports for Highway Signs, Luminaries, and Traffic Signals. All mast arm designs will be approved by the State Traffic Signal Engineer. Mast arm assemblies, anchor bolts and hardware shall be hot dipped galvanized in accordance with Section 811 and all materials shall conform to the applicable provisions of Section 1013 .

1020.04.4 Anchor Bolts for Steel Signal Support Poles and

Standards For all strain poles and 55 feet or less mast arm, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 1 3/4 inches, 5 NC thread with a yield strength of 105 ksi, be hot dipped galvanized for the top 12 inches, and comply with ASTM F1554 Grade 105. Furnish one additional anchor bolt for acceptance testing by the Department. For 55 feet single, 50 feet x 35 feet dual and greater mast arms, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 2-1/4 inch, with a yield strength of 55 ksi, shall be hot dipped galvanized for the top 12 inches, and shall comply with ASTM F1554 Grade 55. Furnish one additional ancho r bolt for acceptance testing by the Department.

1020.04.5 Treated Timber Poles: Comply with Section 1014 .

on and perpendicular to a 13 1/2 -inches bolt circle. A removal panel on the side of the transformer base shall be provided for access to the base. A 1/2 -inch -13NC grounding nut shall be provided 90 degrees left of this panel. A U.L. approved grounding lug shall be provided with each pole. Ground lug shall accept a #6 AWG solid bare copper ground wire. The bottom of the transform er base shall fit a 16 -inches bolt circle using four 1 3/4 -inches bolts supplied with each pole. These bolts shall conform to these specifications and plan details with exception that the cap nuts shall be replaced with the regular hex nuts. The transfor mer base shall be capable of being rotated 360 degrees.

1020.04.3 1.6 Wireways: The pole shaft and mast arm shall

be suitable for wire ways throughout their length.

1020.04.3 1.7 Identification: The pole shaft, mast arm and

arms, and transformer base shall have a matching seria l number.

1020.04.3 2 55 Feet Single, 50 Feet x 35 Feet Dual and

Greater: Only Bolt -On Mast Arms & Dual Mast Arm Poles on the Traffic Operations Approved Products List will be accepted. The design shall meet the requirements of the 2009 edition AASHTO Standard Specification for Structural Supports for Highway Signs, Luminaries, and Traffic Signals. All mast arm designs will be approved by the State Traffic Signal Engineer. Mast arm assemblies, anchor bolts and hardware shall be hot dipped galvanized in accordance with Section 811 and all materials shall conform to the applicable provisions of Section 1013 .

1020.04.4 Anchor Bolts for Steel Signal Support Poles and

Standards For all strain poles and 55 feet or less mast arm, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 1 3/4 inches, 5 NC thread with a yield strength of 105 ksi, be hot dipped galvanized for the top 12 inches, and comply with ASTM F1554 Grade 105. Furnish one additional anchor bolt for acceptance testing by the Department. For 55 feet single, 50 feet x 35 feet dual and greater mast arms, furnish anchor bolts in accordance with the standard details. Anchor bolts shall be 2-1/4 inch, with a yield strength of 55 ksi, shall be hot dipped galvanized for the top 12 inches, and shall comply with ASTM F1554 Grade 55. Furnish one additional ancho r bolt for acceptance testing by the Department.

1020.04.5 Treated Timber Poles: Comply with Section 1014 .

1020.05 TRAFFIC SIGNAL CABIN ET Only TS-2 Traffic Signal

Cabinets on the Traffic Operations Approved Products List will be accepted.

1020.06 SOLAR POWERED FLASHI NG BEACONS Only Solar

Powered Flashing Beacons on the Traffic Operations Approved Products List will be acc epted.

Source: Louisiana Standard Specifications for Roads and Bridges, 2016 Edition. Pages 11431144 of 1,145.