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Home / DOT Specifications / Wyoming / WYDOT Standard Specifications for Road & Bridge Construction / 210
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210Equipment Work

WY · 2021 Standard Specifications✓ Full text on BuildSpecBook pages 178–0 Save this section

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Equipment Work

210.1DESCRIPTION

1 This section describes equipment for hourly work.

210.2MATERIALS—V acant

210.3EQUIPMENT

210.3.1 Backhoe

1 Provide self-propelled backhoes equipped with buckets sized to be capable of handling the material to be moved, commensurate with the power and size of the backhoe, and at least the manufacturer’s rated bucket size.

2 Provide equipment specification if requested by the engineer. Backhoe types are:

1.Type I—Backhoe. A two-wheel drive backhoe with a manufacturer’s weight

specification of up to and including 15,000 lb [6800 kg].

2.Type II—Backhoe . A four-wheel drive ba ckhoe w ith a m anufacturer’s weight

specification of up to and including 15,000 lb [6800 kg].

3.Type III—Backhoe. A two-wheel drive backhoe with a manufacturer’s weight

specification of more than 15,000 lb [6800 kg].

4.Type IV— Backhoe. A four-wheel drive backhoe w ith a manufacturer’s weight

specification of more than 15,000 lb [6800 kg].

210.3.2 Bulldozer

1 Provide tractors mounted on tracks and with an engine rating of at least 110 flywheel hp [82 flywheel kW]. Equip each with a blade at least 8 ft [2.4 m] wide. When specified, equip with a rear-mounted ripper.

210.3.3 Excavators

1 Provide excavators equipped with buckets sized to meet the following criteria:

1.Capable of handling the material to be moved.
2.Commensurate with the power and size of the excavator.
3.At least the manufacturer’s rated bucket size.

Equipment Work SECTION 210

2 Excavator work that requires an extended stick will be specified.

210.3.4 Loader

1 Provide wheeled or tracked loaders equipped with buckets sized to meet the following criteria:

1.Capable of handling the material to be moved.
2.Commensurate with the power and size of the loader.
3.At least the manufacturer’s rated bucket size.

210.3.5 Motor Grader

1 Provide diesel-powered motor graders with an engine rating of at least 80 flywheel hp [60 flywheel kW] and with at least four driving wheels. Equip each with a power-operated blade at least 12 ft [3.6 m] long and with at least one scarifier with all teeth in place.

210.3.6 Roller

1 Provide roller equipment that is self-propelled or towed appropriately. A towed roller and separate power unit are considered a single roller unit . If requested, provide equipment specifications, including weights, horsepowers, and tire pressures. The following are roller types:

1.Type I—Equi pment Roller. A scraper with a minimum capacity of 12 yd³ [9 m³], a

ballast weight of at least 18 ton [16 t], and tires inflated to at least 60 psi [400 kPa]. Use larger equipment if the required compaction density is not achieved.

2.Type II—Light Pneumatic Roller. A roller 60 in [1500 mm] wide minimum with

pneumatic tires of equal size and diameter mounted on two axles attached to a rigid frame; axles aligned such that rear axle tires, when inflated to proper pressure, compact voids untouched by the front -axle tires; capable of ballast loading, either with water or sand; empty operating weight from 9000 lb to 18,000 lb [4 100 kg to 8 200 kg; tire contact pressure is 45 psi [300 kPa] minimum; all tires comply with roller manufacturer recommendations.

3.Type III—Sheep ’s Foot Roller. A roller 60 in [1500 mm] wide with one or two steel

drums at least 60 in [1500 mm] in diameter and with studded tamping feet. Provide a roller with feet that project at least 7 in [175 mm] from the drum surface, are spaced from 6 in to 10 in [150 mm to 250 mm] measured center to center in any direction, and have a surface area from 4 in² to 12 in² [2600 mm² to 7700 mm²]. Operate with enough load to produce a ground pressure of at least 300 psi [2MPa].

Equipment Work SECTION 210

4.Type IV—50 T on [45 Mg] Pneumatic Roller. A roller with four pneumatic tires

mounted on a frame with a ballast body and enough capacity to produce an operating weight from 30 ton to 60 ton [27 t to 54 t] . Provide a roller with tires uniform in size and capable of an inflation pressure of at least 150 psi [1 MPa] and with wheels loaded equally.

5.Type V—Segmented T amping Roller. A self-propelled, segmented- wheel

tamping roller with drive and guide rolls at least 65 in [1650 mm] in diameter and at least 26 in [650 mm] wide. Provide either a three- or four-wheel type, weighing at least 19 tons [17 t] and powered by an engine with at least 270 brake hp [201 brake kW].

6.Type VI—V ibratory Roller. A self-propelled, smooth-wheel, two- axle vibratory

roller no more than 60 in [1500 mm] wide overall, with a minimum net weight of 3000 lb [1350 kg], and a minimum vibratory frequency of 4000 vibrations per minute. Provide a roller with a compression roller at least 30 in [750 mm] in diameter and 36 in [900 mm] in width.

7.Type VII—V ibratory Roller. A vibratory-type roller weighing at least 10,000 lb [4.5 t]

and self-propelled or towed by a tractor. Equip with a single or dual steel vibratory drum, each with a minimum vibratory frequency of 1100 vibrations per minute and a minimum width of 60 in [1500 mm]. A towed roller and separate power unit are considered a single roller unit.

210.3.7 Scraper

1 Provide self-propelled scrapers with two or four drive wheels that are self-loading or have additional power equipment to load to capacity.

210.

3.8Truck

1 Provide trucks equipped with dump bodies capable of hauling highway materials, load to the manufactures recommended truck capacity or legal load.

210.4CONSTRUCTION

1 Ensure the availability of equipment within the time frames needed and in coordination with other work.

210.5MEASUREMENT and PAYMENT

210.5.1 General

1 The engineer will not measure standby time. Unit payment includes supervision, operator and labor costs, fuel, oil, lubricants, maintenance, and other related items.

Equipment Work SECTION 210

2 The engineer will measure:

1.Backhoe work by the hour, computed as the actual hours of operation multiplied by

the lowest pay factor from Table 210.5.1-1, Backhoe Pay Factor, for the provided equipment’s engine or bucket size rating.

Table 210.5.1-1 Backhoe Pay Factor Backhoe Type Pay Factor I 1.0 II 1.15 III 1.0 IV 1.15

2.Bulldozer work by the hour, computed as the actual hours of operation multiplied by

the pay factor from T able 210.5.1-2, Bulldozer Pay Factor, for the provided equipment’s horsepower [kilowatt] rating.

Table 210.5.1-2 Bulldozer Pay Factor Minimum Flywheel hp [kW] Pay Factor(1) 701 and over 1.5 501 - 700 1.3 326 - 500 1.15 225 - 325 1.0 190 - 224 0.8 120 - 189 0.65 80 - 119 0.5 Less than 80 0.45 (1) Includes a ripper when specified. When a ripper is not specified and is required or approved for use by the engineer, an additional 0.15 will be added to the above pay factor.

3.Excavator work by the hour, computed as the actual hours of operation multiplied

by the lowest pay factor from Table 210.5.1- 3, Excavator Pay Factor, for the provided equipment’s metric ton size rating or bucket size rating.

Equipment Work SECTION 210

Table 210.5.1-3 Excavator Pay Factor Excavator Size (metric ton) (1) Pay Factor Minimum Bucket Size Yd3 [m3] 50 and over 1.75 4.0 [3.0] and over 40 - 49 1.5 3.0 - 4.0 [2.3 - 3.0] 35 - 39 1.25 2.5 - 3.0 [1.9 - 2.3] 29 - 34 1.0 2.0 - 2.5 [1.5 - 1.9] 20 - 28 0.9 0.6 - 2.0 [0.5 - 1.5] Less than 20 0.85 Less than 0.6 [0.5] (1) The industry does not use English equivalent weight for excavators.

4.Loader work by the hour, computed as the actual hours of operation multiplied by

the lowest pay factor from Table 210.5.1-4, Loader Pay Factor, for the provided equipment’s engine or bucket size rating.

Table 210.5.1-4 Loader Pay Factor Minimum Flywheel hp [kW] Pay Factor Minimum Bucket Size yd3 [m3] 270 and over [200 and over] 1.00 5.0 and over [3.8 and over] 216 to 269 [160 to 199] 0.85 4.0 [3.1] 170 to 215 [126 to 159] 0.75 3.5 [2.7] 160 to 169 [118 to 125] 0.70 3.0 [2.3] 135 to 159 [100 to 117] 0.65 2.5 [2.0] 134 and under [99 and under] 0.60 None

5.Motor Grader work by the hour, computed as the actual hours of operation

multiplied by the pay factor from Table 210.5.1-5, Motor Grader Pay Factor, for the provided equipment’s horsepower [kilowatt] rating.

Table 210.5.1-5 Motor Grader Pay Factor Minimum Flywheel hp [kW] Pay Factor(1) 250 and over 1.25 200 - 249 1.00 150 - 199 0.90 135 - 149 0.80

Equipment Work SECTION 210

Table 210.5.1-5 Motor Grader Pay Factor Minimum Flywheel hp [kW] Pay Factor(1) 125 - 134 0.75 124 and under 0.70 (1) Pay factor includes the blade, scarifier, or both.

6.Roller, Type ________ work by the hour, computed as actual hours of use.
7.Scraper work by the cubic yard hour [cubic meter hour], computed as the actual

hours of operation multiplied by the provided equipment’s manufacturer- rated capacity in cubic yards [cubic meters], multiplied by the appropriate pay factor from Table 210.5.1-6, Scraper Pay Factor.

Table 210.5.1-6 Scraper Pay Factor

Type of Scraper Manufacturer's Rated Volume in yd3 [m3] 0 to 21 [0 to 16] 22 to 31 [17 to 24] 31.1 and over [24.1 and over] Single-Engine/ Single-Engine Auger

1.00

1.00

1.00 Tandem-Powered/ Single- Engine Auger

1.10

1.20

1.25 Push-Pull(1) 1.25 1.50 1.75 Elevating 1.00 1.00 1.00

(1)Two tandem powered standard scrapers operating in tandem.
8.Truck work by the cubic yard hour [cubic meter hour], computed as the actual hours

of operation multiplied by the equipment’s capacity (from manufacturer -rated capacity), field measurements, or measured legal loads.

3 The department will pay as follows:

Pay Item

Pay Unit Measure to the Nearest Pay to the Nearest

Backhoe HR [h] 0.5 h 0.5 HR [0.5 h] Bulldozer HR [h] 0.5 h 0.5 HR [0.5 h] Excavator HR [h] 0.5 h 0.5 HR [0.5 h] Loader HR [h] 0.5 h 0.5 HR [0.5 h]

Equipment Work SECTION 210

Pay Item

Pay Unit Measure to the Nearest Pay to the Nearest

Motor Grader HR [h] 0.5 h 0.5 HR [0.5 h] Roller, Type___ HR [h] 0.5 h 0.5 HR [0.5 h] Scraper CYHR [m3h] yd3, 0.5 h [m3, 0.5 h] 0.5 CYHR [0.5 m3h] Truck CYHR [m3h] yd3, 0.5 h[m3, 0.5 h] 0.5 CYHR [0.5 m3h]

210.5.2 Referenced Sections for Direct Payment

1 When specified, the engineer will measure and pay for:

1.Additional power equipment required to load scrapers to capacity by equipment

hours in accordance with Section 210, Equipment Work, for the equipment used or in accordance with Subsection 109.4, Extra and Force Account Work.

2.Equipment used to load trucks by equipment hours in accordance with Section

210, Equipment Work, for the equipment used or in accordance with Subsection 109.4, Extra and Force Account Work.

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Source: Wyoming Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 178–0 of 771. View official source ↗
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