manual freze wirtgen

Cold milling machines

Calculating the working performance

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0 500 1000 1500 2000 2500

Hard asphalt

Soft asphalt

Most common working range

2 // 3

Contents

Purpose of this brochure 4

How to use this brochure to determine the performance values 6

Performance diagrams and sample calculations for:

Cold milling machine W 350 8


Cold milling machine W 35 DC 12





Cold milling machine W 1000 L 22

Cold milling machine 1000 C 24


Cold milling machine W 1000 F 28



Cold milling machine 1300 DC 34








the machine parameters

the material parameters

the site conditions

the traffic situation

the transport capacity for transport of the milled material

the experience of the operating staff.

This brochure has been compiled on the basis of Wirtgen’s

decades of know-how and customers’ practical experience

in the field, in order to provide the user with a useful tool for

calculating the working performance of his machines.

The output of a milling machine in practice depends on numerous influencing factors. The most important of these are:

Purpose of this brochure

This brochure presents performance diagrams of the

Wirtgen milling machines, as determined in extensive

test series involving the milling of asphalt pavements in

Western Europe.

These performance diagrams are supplemented by

mathematical formulas which allow the determination

of the area output achieved in practical site operations.

With the aid of this tool, the user can roughly calculate the

hourly or daily output to be expected of his machine.

However, a few assumptions first have to be made, which

have an effect on the result. The user’s experience in

correctly estimating the prevailing local conditions is of

particular importance in this context.

Despite the good applicability of the diagrams, formulas

and values given, Wirtgen GmbH cannot accept any liability

in relation to the calculation methods. All figures are for

information only and not binding. No part of this brochure

may be reprinted or duplicated.

Milling of complete asphalt pavements in asingle operation.

The heart of the milling machine: the milling drum of a high-capacity machine with easilyreplaceable milling cutters and patented HT3 Plus interchangeable toolholder system.

FrästiefeT (cm)

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

harter Asphalt

weicher Asphalt

häufigster Arbeitsbereich

VorschubV (m/min)theoretischeFlächenleistungFT (m2/h)

5 // 54 // 5

Machineparameters

Machineparameters

Siteconditions

Trafficsituation

Transportcapacity

Operating staff

Working width Asphalt/Concrete Milling depth Cordoned-off site Number of trucks Experienced/

inexperienced

Engine output Type of rockhard/soft

Unobstructed area Obstacles Organisation

Weight Grain shaperound or broken Partial repair work Traffic situation

Cutting speed Grain distribution

Influencing factorsobstructing work

Type of cuttingtool, spacing

Type of binderhard/soft

Travel drive Crawler track/wheel Temperature

Area output

Factors influencing the milling output

With the aid of this brochure, you can find the right machine for every job. This guaranteesmaximum economy and rapid site completion.

Highly manoeuvrable small milling machinesreduce the amount of re-work required.

How to use this brochure to determinethe performance values

1. Selecting the type of machine

The type of machine to be used for a construction job has to

be selected first, so that its performance data can be deter-

mined. A total of 21 different types of machines – both from

Wirtgen’s current range and older models – are available for

this purpose in this brochure.

2. Determining the theoretical area output from

the diagram

Starting with the selected milling depth and the assumed

pavement hardness (N.B.: This has a major influence on the

milling output!), the rate of advance in m/min and the asso-

ciated theoretical area output in m2/h are determined from

the appropriate diagram. If the probable pavement hardness

is not known, it may be advisable to carry out the calcula-

tions below using different assumed values.

3. Determining the allowance factor

The allowance factor must now be determined for the

construction project to which the calculations apply. These

factors are listed both for work in built-up areas and for work

in open country. These values are not fixed, but usually vary

within a certain range.

The following facts may considerably reduce the

performance in practice:

Long delays waiting for trucks

Several, separate areas to be milled, requiring repeated

transfer of the machine

Traffic impeding the milling work

Obstacles in the road (manhole covers, hydrants, gas

and water valves, rainwater inlets, etc.)

Winding roads, uphill and downhill work, etc.

Inclement weather

Other factors obstructing the work or unavoidable

interruptions.

Under certain circumstances, it may be useful to perform

the calculations using two different allowance factors.

4. Calculating the practical output data

The practical milling output, the reclaimed quantities and

volumes, and also the working time required, can now be

calculated with the aid of the formulas given here.

Two complete typical sample calculations are included

for each of the 21 types of machine, in order to explain the

procedure. These examples apply when milling asphalt

pavements at a ground temperature of approx. 15 °C.

6 // 7

The high output of the milling machine requires the availability of sufficient truck capacity to take away the reclaimed material. Calculatingthe milling output permits accurate estimation of the volume of reclaimed material, resulting in highly economical operations.

Additional points to be considered:

Temperature of the pavement to be milled

In practice, the achievable milling output essentially

depends, among other things, on the temperature of the

pavement. In this context, the values given in this brochure

refer to a ground temperature of approx. 15 °C.

The binder (bitumen) becomes softer at higher temperatures.

The result is an increase in the milling output, as the entire

pavement can be detached more easily and the milling

machine encounters less resistance. The reverse applies at

lower temperatures, in which case a lower practical milling

output must be expected.

As a mathematical rule-of-thumb, it can be anticipated

that roughly 60 % of the listed output can be achieved at

a ground temperature of 0 °C. In contrast, 1.3 times the

practical milling output can be expected at a ground

temperature of 30 °C:

0 °C: Area output at 0 °C = 0.6 x Area output

at 15°C

30 °C: Area output at 30 °C = 1.3 x Area output

at 15 °C

To be calculated differently:

Milling of concrete surfaces

The calculations and examples presented in this brochure

refer exclusively to the milling of asphalt surfaces. The use

of the curves is limited to making estimates when milling

concrete. To this end, the value for the theoretical area

output when milling hard asphalt must be multiplied by a

factor of 0.3. This gives a rough estimate of the practical

milling capacities to be expected when milling concrete.

When milling concrete, there is no need for the approximate

calculation to include any temperature influence on the

milling output.

Moreover, when milling concrete, it must also be borne

in mind that the theoretical milling depth of the type of

machine involved cannot be exploited to such a great

extent as when milling asphalt.

Cold milling machine W 350

Calculation of the practical area output FP:

Calculation of the practical reclaimed volume QV:

Calculation of the practical reclaimed quantity QT:

Calculation of the total reclaimed volume for the job QGV:

Calculation of the total reclaimed quantity for the job QGT:

Calculation of the working time required for the job Z:

Technical data:

Engine output ................................................. 42 kW/56 HP/57 PS

Milling width .................................................................................. 35 cm

Milling depth ............................................................................ 0–10 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:

FT (m2/h) = Theoretical area output in m2/h

FP (m2/h) = Practical area output in m2/h

FF (m2) = Milling area in m2

A = Allowance factor

Milling in built-up areas: A = 0.3 to 0.5

Milling in open country: A = 0.5 to 0.7

Z (h) = Working time in h

T (cm) = Selected milling depth in cm

QV (m3/h) = Practical reclaimed volume in m3/h

QT (t/h) = Practical reclaimed quantity in tonnes/h

QGV (m3) = Total reclaimed volume for the job in m3

QGT (t) = Total reclaimed quantity for the job in

tonnes

Theoretical performance values:Milling depthT (cm)

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt


Advance speedV (m/min)Theoretical area outputFT (m2/h)

FrästiefeT (cm)

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

harter Asphalt

weicher Asphalt

häufigster Arbeitsbereich

VorschubV (m/min)theoretischeFlächenleistungFT (m2/h)

8 // 9

Sample calculation 1

Job: Partial repair of the pavement

of a motorway tangent

Milling depth: T = 3.5 cm

Total milled area: FF = 26 m2

Pavement: Mastic asphalt, hard

Determination of the theoretical area output

from the diagram: FT = 60 m2/h

Selection of the allowance factor

As a continuous area without obstruction due to traffic is to be

milled, a factor of 0.6 is selected.

Calculation of the practical area output FP (m2/h):

FP = A x FT

FP = 0.6 x 60 FP = 36 m2/h

Calculation of the practical reclaimed volume QV (m3/h):

QV = FP x T x 0.013

QV = 36 x 3.5 x 0.013 QV = 1.6 m3/h

Calculation of the practical reclaimed quantity QT (t /h):

QT = FP x T x 0.024

QT = 36 x 3.5 x 0.024 QT = 3.0 t/h

Calculation of the total reclaimed volume QGV (m3):

QGV = FF x T x 0.013

QGV = 26 x 3.5 x 0.013 QGV = 1.2 m3

Calculation of the total reclaimed quantity QGT (t):

QGT = FF x T x 0.024

QGT = 26 x 3.5 x 0.024 QGT = 2.2 t

Calculation of the working time required Z (h):

Z = FF / FP

Z = 26/ 36 Z = 0.7 h, i.e. approx. 1 working hour

Milling depthT (cm)

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0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



60 m2/h


Job: Milling off the top course

of a parking deck


Total milled area: FF = 4,000 m2

Pavement: Mastic asphalt, moderately hard, cracked




A continuous area is to be milled here, although supporting pillars

impede the workflow in some places. A factor of 0.5 is therefore

selected.


FP = A x FT

FP = 0.5 x 145 FP = 72.5 m2/h


QV = FP x T x 0.013

QV = 72.5 x 1.5 x 0.013 QV = 1.4 m3/h


QT = FP x T x 0.024

QT = 72.5 x 1.5 x 0.024 QT = 2.6 t/h



QGV = 4,000 x 1.5 x 0.013 QGV = 78 m3



QGT = 4,000 x 1.5 x 0.024 QGT = 144 t


Z = FF / FP

Z = 4,000/72.5 Z = 55.2 h, i.e. 55–56 working hours

Milling depthT (cm)

20

18

16

14

12

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8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



145 m2/h








Technical data:

Engine output ...................................... 31.5 kW/42.2 HP/42.8 PS

Milling width .................................................................................. 35 cm

Milling depth .............................................................................. 0–6 cm


10

9

8

7

6

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00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

10 // 11


Job: Demarkation


Total milled area: FF = 5,000 lfm x 0.3 m

Pavement: Coloured marking on asphalt surface course




As a continuous marking with very few interruptions is involved,

a factor of 0.7 is selected.


FP = A x FT

FP = 0.7 x 360 FP = 252 m2/h


QV = FP x T x 0,013

QV = 252 x 0.2 x 0.013 QV = 0.66 m3/h


QT = FP x T x 0.024

QT = 252 x 0.2 x 0.024 QT = 1.21 t/h



QGV = 1,500 x 0.2 x 0.013 QGV = 3.9 m3


QGT = FF x T x 0,024

QGT = 1,500 x 0.2 x 0.024 QGT = 7.2 t


Z = FF / FP

Z = 1,500/252 Z = 5.95 h, i.e. 6 working hours

Milling depthT (cm)

10

9

8

7

6

5

4

3

2

1

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



360 m2/h


Job: Milling off the surface course of a car park

Milling depth: T = 1 cm


Pavement: Mastic asphalt, moderately hard, cracked






selected.


FP = A x FT

FP = 0.6 x 150 FP = 90 m2/h


QV = FP x T x 0.013

QV = 90 x 1 x 0.013 QV = 1.17 m3/h


QT = FP x T x 0.024

QT = 90 x 1 x 0.024 QT = 2.16 t/h



QGV = 2,500 x 1 x 0.013 QGV = 32.5 m3



QGT = 2,500 x 1 x 0.024 QGT = 60 t


Z = FF / FP

Z = 2,500/90 Z = 27.78 h, i.e. approx. 28 working hours

Milling depthT (cm)

10

9

8

7

6

5

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3

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1

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



150 m2/h

Cold milling machine W 35 DC







Technical data:

Engine output ............................................. 42.5 kW/56 HP/58 PS

Milling width .................................................................................. 35 cm

Milling depth ............................................................................ 0–11 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

Theoretical performance values:Milling depth T (cm)11

10

9

8

7

6

5

4

3

2

1

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



12 // 13


Job: Partial repair of the pavement of a motorway tangent



Pavement: Mastic asphalt, hard




As a continuous area is to be milled, without obstruction to traffic,



FP = A x FT

FP = 0.5 x 110 FP = 55 m2/h


QV = FP x T x 0.013

QV = 55 x 4 x 0.013 QV = 2.86 m3/h


QT = FP x T x 0.024

QT = 55 x 4 x 0.024 QT = 5.28 t/h



QGV = 600 x 4 x 0.013 QGV = 31.2 m3



QGT = 600 x 4 x 0.024 QGT = 57.6 t


Z = FF / FP

Z = 600/55 Z = 10.9 h, i.e. 11 working hours

Milling depth T (cm)11

10

9

8

7

6

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3

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1

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



110 m2/h


Job: Milling off the surface course in a hall



Pavement: Concrete screed






selected.


FP = A x FT

FP = 0.6 x 135 FP = 81 m2/h


QV = FP x T x 0.013

QV = 81 x 2 x 0.013 QV = 2.106 m3/h


QT = FP x T x 0.024

QT = 81 x 2 x 0.024 QT = 3.888 t/h



QGV = 2,000 x 2 x 0.013 QGV = 52 m3



QGT = 2,000 x 2 x 0.024 QGT = 96 t


Z = FF / FP


Milling depth T (cm)11

10

9

8

7

6

5

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3

2

1

00 2 4 6 8 10 12 14 16 18 20 22

0 50 100 150 200 250 300 350 400 450

Hard asphalt

Soft asphalt



135 m2/h








Technical data:

Engine output ............................................ 79 kW/105 HP/107 PS

Milling width .................................................................................. 50 cm

Milling depth ............................................................................ 0–16 cm


20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600

Soft asphalt



FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

Hard asphalt

14 // 15


Job: Milling off a 300 m2 section of a main road

through a town with rainwater inlets



Pavement: Asphalt, moderately hard




On account of the numerous rainwater inlets and other obstacles,



FP = A x FT

FP = 0.5 x 140 FP = 70 m2/h


QV = FP x T x 0,013

QV = 70 x 9 x 0.013 QV = 8.2 m3/h


QT = FP x T x 0.024

QT = 70 x 9 x 0.024 QT = 15.1 t/h



QGV = 300 x 9 x 0.013 QGV = 35.1 m3



QGT = 300 x 9 x 0.024 QGT = 64.8 t


Z = FF / FP

Z = 300/70 Z = 4.3 h, i.e. 4-5 working hours

Milling depthT (cm)

20

18

16

14

12

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8

6

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00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600

Soft asphalt



Hard asphalt

140 m2/h


Job: Milling off the wearing course

of a rural access road

Width: 2.5 m Length: 800 m



Pavement: Asphalt, readily millable




As no obstruction due to traffic is anticipated, a factor of 0.6

is selected.


FP = A x FT

FP = 0.6 x 370 FP = 222 m2/h


QV = FP x T x 0.013

QV = 222 x 4 x 0.013 QV = 11.5 m3/h


QT = FP x T x 0.024

QT = 222 x 4 x 0.024 QT = 21.3 t/h



QGV = 2,000 x 4 x 0.013 QGV = 104 m3



QGT = 2,000 x 4 x 0.024 QGT = 192 t


Z = FF / FP

Z = 2,000/222 Z = 9 h, i.e. approx. 9 working hours

Milling depthT (cm)

20

18

16

14

12

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00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600

Soft asphalt



Hard asphalt

370 m2/h








Technical data:

Engine output ................................................. 60 kW/80 HP/82 PS

Milling width .................................................................................. 50 cm

Milling depth ............................................................................ 0–16 cm


20

18

16

14

12

10

8

6

4

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00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600

Hard asphalt

Soft asphalt



FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

17 // 1716 // 17

145 m2/h


Job: Milling off a 300 m2 section of a main road

through a town with rainwater inlets





from the diagram: FT = 102.2 m2/h


On account of the numerous rainwater inlets and other obstacles,



FP = A x FT

FP = 0.5 x 102.2 FP = 51.1 m2/h


QV = FP x T x 0.013

QV = 51.1 x 9 x 0.013 QV = 6.0 m3/h


QT = FP x T x 0.024

QT = 51.1 x 9 x 0.024 QT = 11 t/h



QGV = 300 x 9 x 0.013 QGV = 35.1 m3



QGT = 300 x 9 x 0.024 QGT = 64.8 t


Z = FF / FP

Z = 300/51.1 Z = 5.9 h, i.e. approx. 6 working hours

Milling depthT (cm)

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18

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00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600

Hard asphalt

Soft asphalt



102,2 m2/h



of a rural access road




Pavement: Asphalt, readily millable




As no obstruction due to traffic is anticipated, a factor of 0.6

is selected.


FP = A x FT

FP = 0.6 x 379.3 FP = 227.6 m2/h


QV = FP x T x 0.013

QV = 227.6 x 4 x 0.013 QV = 11.8 m3/h


QT = FP x T x 0.024

QT = 227.6 x 4 x 0.024 QT = 21.8 t/h



QGV = 2,000 x 4 x 0.013 QGV = 104 m3



QGT = 2,000 x 4 x 0.024 QGT = 192 t


Z = FF / FP

Z = 2,000/227.6 Z = 8.8 h, i.e. approx. 9 working hours

Milling depthT (cm)

20

18

16

14

12

10

8

6

4

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00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600

Hard asphalt

Soft asphalt



379,3 m2/h

Hard asphalt

Soft asphalt








Technical data:

Engine output ............................................ 92 kW/123 HP/125 PS

Milling width .................................................................................. 50 cm

Milling depth ............................................................................ 0–21 cm


20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600


FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


18 // 19



of a main road through a town



Pavement: Asphalt, soft




A factor of 0.5 is selected, as the areas to be milled are contiguous,

but contain rainwater inlets.


FP = A x FT

FP = 0.5 x 245 FP = 122.5 m2/h


QV = FP x T x 0.013

QV = 122.5 x 8 x 0.013 QV = 12.7 m3/h


QT = FP x T x 0.024

QT = 122.5 x 8 x 0.024 QT = 23.5 t/h



QGV = 2,000 x 8 x 0.013 QGV = 208 m3



QGT = 2,000 x 8 x 0.024 QGT = 384 t


Z = FF / FP

Z = 2,000/122.5 Z = 16,3 h, i.e. 16-17 working hours

Hard asphalt

Soft asphalt


Milling depthT (cm)

20

18

16

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12

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00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600


245 m2/h


Job: Milling off a strip of pavement from a car park








Work is not likely to be obstructed and there is sufficient transport

capacity available. The factor 0.7 is therefore chosen.


FP = A x FT

FP = 0.7 x 97.4 FP = 68.2 m2/h


QV = FP x T x 0.013

QV = 68.2 x 16 x 0.013 QV = 14.2 m3/h


QT = FP x T x 0.024

QT = 68.2 x 16 x 0.024 QT = 26.2 t/h



QGV = 2,500 x 16 x 0.013 QGV = 520 m3



QGT = 2,500 x 16 x 0.024 QGT = 960 t


Z = FF / FP

Z = 2,500/68.2 Z = 36.7 h, i.e. 36-37 working hours

Hard asphalt

Soft asphalt


Milling depthT (cm)

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600


97,4 m2/h

Hard asphalt

Soft asphalt









Technical data:

Engine output .......................................... 129 kW/173 HP/175 PS

Milling width .................................................................................. 60 cm

Milling depth ............................................................................ 0–30 cm

Theoretical performance values:Milling depthT (cm)32302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24

0 100 200 300 400 500 600 700 800

Advance speedV (m/min)Theoretical area output FT (m2/h)

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

20 // 21


Job: Milling off a strip of pavement on a country road

in order to lay a water pipe




Pavement: Asphalt, moderately hard or hard




The reclaimed material remains in the trench, eliminating all delays

due to waiting for trucks. Consequently, a factor of 0.5 is assumed.


FP = A x FT

FP = 0.5 x 120 FP = 60 m2/h


QV = FP x T x 0.013

QV = 60 x 30 x 0.013 QV = 23.4 m3/h


QT = FP x T x 0.024

QT = 60 x 30 x 0.024 QT = 43.2 t/h



QGV = 70 x 30 x 0.013 QGV = 27.3 m3



QGT = 70 x 30 x 0.024 QGT = 50.4 t


Z = FF / FP


Hard asphalt

Soft asphalt


Milling depthT (cm)32302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24

0 100 200 300 400 500 600 700 800


120 m2/h


Job: Milling off the wearing and binder courses

of a city-centre crossroads







Obstructions due to traffic must be expected at the crossroads

and transverse milling is required. A factor of 0.3 is selected for

this reason.


FP = A x FT

FP = 0.3 x 310 FP = 93 m2/h


QV = FP x T x 0.013

QV = 93 x 12 x 0.013 QV = 14.5 m3/h


QT = FP x T x 0.024

QT = 93 x 12 x 0.024 QT = 26.8 t/h



QGV = 220 x 12 x 0.013 QGV = 34.3 m3



QGT = 220 x 12 x 0.024 QGT = 63.4 t


Z = FF / FP


Hard asphalt

Soft asphalt



0 2 4 6 8 10 12 14 16 18 20 22 24

0 100 200 300 400 500 600 700 800


310 m2/h

Cold milling machine W 1000 L







Technical data:


Milling width .................................................................................... 1.0 m

Milling depth ............................................................................ 0–25 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


24

22

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Hard asphalt

Soft asphalt



22 // 23



of a little-used minor road



Pavement: Asphalt, soft and crumbly




The area to be milled can be machined in one piece, but there are

rainwater inlets. Consequently, a factor of 0.6 is selected.


FP = A x FT

FP = 0.6 x 890 FP = 534 m2/h


QV = FP x T x 0.013

QV = 534 x 4 x 0.013 QV = 27.8 m3/h


QT = FP x T x 0.024

QT = 534 x 4 x 0.024 QT = 51.3 t/h



QGV = 3,000 x 4 x 0.013 QGV = 156 m3



QGT = 3,000 x 4 x 0.024 QGT = 288 t


Z = FF / FP



24

22

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Hard asphalt

Soft asphalt



890 m2/h


Job: Milling off three sections on a motorway feeder


Total milled area: FF = 3 x 60 m2 = 180 m2





As three separate areas are to be milled,



FP = A x FT

FP = 0.5 x 320 FP = 160 m2/h


QV = FP x T x 0.013

QV = 160 x 12 x 0.013 QV = 25 m3/h


QT = FP x T x 0.024

QT = 160 x 12 x 0.024 QT = 46.1 t/h



QGV = 180 x 12 x 0.013 QGV = 28.1 m3



QGT = 180 x 12 x 0.024 QGT = 51.8 t


Z = FF / FP



24

22

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Hard asphalt

Soft asphalt



320 m2/h

Cold milling machine W 1000 C







Technical data:


Milling width .................................................................................... 1.0 m

Milling depth ............................................................................ 0–18 cm


20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Hard asphalt

Soft asphalt



FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

24 // 25


Job: Milling off the wearing course of a main road through a town



Pavement: Asphalt, soft and crumbly




A factor of 0.5 is selected, as the areas to be milled are contiguous,

but contain rainwater inlets.


FP = A x FT

FP = 0.5 x 650 FP = 325 m2/h


QV = FP x T x 0,013

QV = 325 x 4 x 0.013 QV = 16.9 m3/h


QT = FP x T x 0.024

QT = 325 x 4 x 0.024 QT = 31.2 t/h



QGV = 3,000 x 4 x 0.013 QGV = 156 m3



QGT = 3,000 x 4 x 0.024 QGT = 288 t


Z = FF / FP

Z = 3,000/325 Z = 9.2 h, i.e. 9–10 working hours

Milling depthT (cm)

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Hard asphalt

Soft asphalt



650 m2/h


Job: Milling off two sections

of a motorway hard shoulder


Total milled area: FF = 2 x 90 m2 = 180 m2





A factor of 0.6 is selected, as two separate areas are

to be milled.


FP = A x FT

FP = 0.6 x 220 FP = 132 m2/h


QV = FP x T x 0.013

QV = 132 x 10 x 0.013 QV = 17.2 m3/h


QT = FP x T x 0.024

QT = 132 x 10 x 0.024 QT = 31.7 t/h



QGV = 180 x 10 x 0.013 QGV = 23.4 m3



QGT = 180 x 10 x 0.024 QGT = 43.2 t


Z = FF / FP

Z = 180/132 Z = 1.4 h, i.e. approx. 2 working hours

Milling depthT (cm)

20

18

16

14

12

10

8

6

4

2

00 2 4 6 8 10 12 14 16 18 20 22

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300

Hard asphalt

Soft asphalt



220 m2/h








Technical data:


Milling width .................................................................................... 1.0 m

Milling depth ............................................................................ 0–25 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600

Hard asphalt

Soft asphalt



FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

26 // 27


Job: Milling off the wearing course of a country road







The areas to be milled are continuous, but there are traffic islands

and convex bays. Therefore, a factor of 0.5 is selected.


FP = A x FT

FP = 0.5 x 960 FP = 480 m2/h


QV = FP x T x 0.013

QV = 480 x 4 x 0.013 QV = 25 m3/h


QT = FP x T x 0.024

QT = 480 x 4 x 0,024 QT = 46.1 t/h



QGV = 4,000 x 4 x 0.013 QGV = 208 m3



QGT = 4,000 x 4 x 0.024 QGT = 384 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600

Hard asphalt

Soft asphalt



960 m2/h


Job: Milling off a strip of pavement

on a runway

Width: 1.0 m Length: 2,000 m







A factor of 0.6 is selected, as there is nothing to obstruct the work

and sufficient transport capacity is available.


FP = A x FT

FP = 0.6 x 280 FP = 168 m2/h


QV = FP x T x 0.013

QV = 168 x 18 x 0.013 QV = 39.3 m3/h


QT = FP x T x 0.024

QT = 168 x 18 x 0.024 QT = 72.6 t/h



QGV = 2,000 x 18 x 0.013 QGV = 468 m3



QGT = 2,000 x 18 x 0.024 QGT = 864 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600

Hard asphalt

Soft asphalt



280 m2/h

Cold milling machine W 1000 F







Technical data:


Milling width .................................................................................... 1.0 m

Milling depth ........................................................................ 0–31.5 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600

Hard asphalt

Soft asphalt


Advance speed V (m/min)Theoretical area output FT (m2/h)

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

28 // 29


Job: Milling off the surface course

of a motorway section





from the diagram: FT = 1,160 m2/h


The area to be milled forms a continuous surface and there is

sufficient transport capacity available. The factor 0.6 is therefore

chosen.


FP = A x FT

FP = 0.6 x 160 FP = 696 m2/h


QV = FP x T x 0.013

QV = 696 x 4 x 0.013 QV = 36.2 m3/h


QT = FP x T x 0.024

QT = 696 x 4 x 0.024 QT = 66.8 t/h



QGV = 2,000 x 4 x 0.013 QGV = 104 m3



QGT = 2,000 x 4 x 0.024 QGT = 192 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600

Hard asphalt

Soft asphalt




Job: Milling off a strip of pavement from a car park








Work is not likely to be obstructed and there is sufficient transport

capacity available. The factor 0.7 is therefore chosen.


FP = A x FT

FP = 0.7 x 310 FP = 217 m2/h


QV = FP x T x 0.013

QV = 217 x 20 x 0.013 QV = 56.4 m3/h


QT = FP x T x 0.024

QT = 217 x 20 x 0.024 QT = 104.2 t/h



QGV = 2,500 x 20 x 0.013 QGV = 650 m3



QGT = 2,500 x 20 x 0.024 QGT = 1,200 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600

Hard asphalt

Soft asphalt



310 m2/h

1.160 m2/h








Technical data:


Milling width .................................................................................... 1.2 m

Milling depth ........................................................................ 0–31.5 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600 1800 2000

Hard asphalt

Soft asphalt



FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

30 // 31


Job: Milling off the surface course

of a marginal strip along a main road








The road is straight, with few junctions. Sufficient transport capacity

is available. The factor 0.6 is therefore chosen.


FP = A x FT

FP = 0.6 x 1,300 FP = 780 m2/h


QV = FP x T x 0.013

QV = 780 x 4 x 0.013 QV = 40.6 m3/h


QT = FP x T x 0.024

QT = 780 x 4 x 0.024 QT = 74.9 t/h



QGV = 12,000 x 4 x 0.013 QGV = 624 m3



QGT = 12,000 x 4 x 0.024 QGT = 1,152 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600 1800 2000

Hard asphalt

Soft asphalt



1.300 m2/h


Job: Milling off the surface and binder courses

at an inner-city crossroads







Obstruction due to traffic must be expected in the crossing and

the trucks must travel a long way to reach the site. The factor 0.4

is therefore chosen.


FP = A x FT

FP = 0.4 x 400 FP = 160 m2/h


QV = FP x T x 0.013

QV = 160 x 18 x 0.013 QV = 37.4 m3/h


QT = FP x T x 0.024

QT = 160 x 18 x 0.024 QT = 69.1 t/h



QGV = 300 x 18 x 0.013 QGV = 70.2 m3



QGT = 300 x 18 x 0.024 QGT = 129.6 t


Z = FF / FP

Z = 300/160 Z = 1.9 h, i.e. approx. 2 working hours


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 200 400 600 800 1000 1200 1400 1600 1800 2000

Hard asphalt

Soft asphalt



400 m2/h








Technical data:


Milling width ................................................................................. 1.32 m

Milling depth ........................................................................ 0–31.5 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000


FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

Hard asphalt

Soft asphalt


32 // 33


Job: Milling off the surface course of a car park


Width: 25 m Length: 200 m






There are concrete pillars on the parking area, which must be driven

around. The factor 0.5 is therefore chosen.


FP = A x FT

FP = 0.5 x 1,375 FP = 688 m2/h


QV = FP x T x 0.013

QV = 688 x 3 x 0.013 QV = 26.8 m3/h


QT = FP x T x 0.024

QT = 688 x 3 x 0.024 QT = 49.5 t/h



QGV = 5,000 x 3 x 0.013 QGV = 195 m3



QGT = 5,000 x 3 x 0.024 QGT = 360 t


Z = FF / FP

Z = 5,000/688 Z = 7.3 h, i.e. approx. 7–8 working hours


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000


Hard asphalt

Soft asphalt


1.375 m2/h


Job: Milling off the surface

and binder courses at an airport


Total milled area: FF = 8 x 1,500 m2 = 12,000 m2

Pavement: Asphalt, hard




The machine must be relocated several times, but no obstructions

are expected otherwise. The factor 0.5 is therefore chosen.


FP = A x FT

FP = 0.5 x 460 FP = 230 m2/h


QV = FP x T x 0.013

QV = 230 x 12 x 0.013 QV = 35.9 m3/h


QT = FP x T x 0.024

QT = 230 x 12 x 0.024 QT = 66.2 t/h



QGV = 12,000 x 12 x 0.013 QGV = 1,872 m3



QGT = 12,000 x 12 x 0.024 QGT = 3,456 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000


Hard asphalt

Soft asphalt


460 m2/h

Cold milling machine 1300 DC







Technical data:

Engine output ......................................... 297 kW / 398 HP/404 PS

Milling width ................................................................................. 1.32 m

Milling depth ............................................................................ 0–30 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000


FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

Hard asphalt

Soft asphalt


34 // 35


Job: Milling off the wearing and binder courses

of an urban bypass







On account of the convex bays and traffic islands, a factor of 0.5

is selected.


FP = A x FT

FP = 0.5 x 650 FP = 325 m2/h


QV = FP x T x 0.013

QV = 325 x 12 x 0.013 QV = 50.7 m3/h


QT = FP x T x 0.024

QT = 325 x 12 x 0.024 QT = 93.6 t/h



QGV = 1,700 x 12 x 0.013 QGV = 265.2 m3



QGT = 1,700 x 12 x 0.024 QGT = 489.6 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000


Hard asphalt

Soft asphalt


650 m2/h


Job: Milling off the wearing course of an urban road







On account of the dense traffic to be expected and the numerous

structures built in, a factor of 0.4 is selected.


FP = A x FT

FP = 0.4 x 1,600 FP = 640 m2/h


QV = FP x T x 0.013

QV = 640 x 4 x 0.013 QV = 33.3 m3/h


QT = FP x T x 0.024

QT = 640 x 4 x 0.024 QT = 61.4 t/h



QGV = 4,000 x 4 x 0.013 QGV = 208 m3



QGT = 4,000 x 4 x 0.024 QGT = 384 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000


Hard asphalt

Soft asphalt


1.600 m2/h








Technical data:


Milling width ................................................................................. 2.01 m

Milling depth ............................................................................ 0–30 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

Hard asphalt

Soft asphalt


36 // 37


Job: Milling off the wearing course of a three-lane feeder road

leading to the centre of a major city



Pavement: Mastic asphalt, very hard




Convex bays and traffic islands will obstruct the work.

Therefore, a factor of 0.5 is selected.


FP = A x FT

FP = 0.5 x 1,600 FP = 800 m2/h


QV = FP x T x 0.013

QV = 800 x 4 x 0.013 QV = 41.6 m3/h


QT = FP x T x 0.024

QT = 800 x 4 x 0.024 QT = 76.8 t/h



QGV = 6,000 x 4 x 0.013 QGV = 312 m3



QGT = 6,000 x 4 x 0.024 QGT = 576 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


1.600 m2/h


Job: Milling off the bituminous courses

of a national trunk road







As the areas to be milled are continuous and the obstructions due to

traffic are relatively minor, a factor of 0.6 is selected.


FP = A x FT

FP = 0.6 x 260 FP = 156 m2/h


QV = FP x T x 0.013

QV = 156 x 24 x 0.013 QV = 48.7 m3/h


QT = FP x T x 0.024

QT = 156 x 24 x 0.024 QT = 89.9 t/h



QGV = 3,500 x 24 x 0.013 QGV = 1,092 m3



QGT = 3,500 x 24 x 0.024 QGT = 2,016 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


260 m2/h








Technical data:


Milling width .................................................................................... 1.5 m

Milling depth ........................................................................ 0–32.0 cm


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


Hard asphalt

Soft asphalt


38 // 39


Job: Milling off the surface and

binder courses at an inner-city crossroads







Due to the high traffic volume, a factor of 0.3 is chosen.


FP = A x FT

FP = 0.3 x 900 FP = 270 m2/h


QV = FP x T x 0.013

QV = 270 x 12 x 0.013 QV = 42.1 m3/h


QT = FP x T x 0.024

QT = 270 x 12 x 0.024 QT = 77.8 t/h



QGV = 3,000 x 12 x 0.013 QGV = 468 m3


QGT = FF x T x 0,024

QGT = 3,000 x 12 x 0.024 QGT = 864 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500


Hard asphalt

Soft asphalt


900 m2/h


Job: Milling out of a trench in a residential area


Width: 1,5 m Length: 600 m






Due to the narrow road and the residential traffic to be expected,

the factor 0.4 is selected.


FP = A x FT

FP = 0.4 x 250 FP = 100 m2/h


QV = FP x T x 0.013

QV = 100 x 30 x 0.013 QV = 39 m3/h


QT = FP x T x 0.024

QT = 100 x 30 x 0.024 QT = 72 t/h



QGV = 900 x 30 x 0.013 QGV = 351 m3



QGT = 900 x 30 x 0.024 QGT = 648 t


Z = FF / FP

Z = 900/100 Z = 9 h, i.e. approx. 9 working hours


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500


Hard asphalt

Soft asphalt


250 m2/h








Technical data:


Milling width .................................................................................... 2.0 m

Milling depth ........................................................................ 0–32.0 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


40 // 41


Job: Milling off the surface course in

the main road of a village







There are road fittings and the through traffic will also obstruct the

construction work. The factor 0.4 is therefore chosen.


FP = A x FT

FP = 0.4 x 1,320 FP = 528 m2/h


QV = FP x T x 0.013

QV = 528 x 8 x 0.013 QV = 54.9 m3/h


QT = FP x T x 0.024

QT = 528 x 8 x 0.024 QT = 101.4 t/h



QGV = 10,000 x 8 x 0.013 QGV = 1,040 m3



QGT = 10,000 x 8 x 0.024 QGT = 1,920 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


1.320 m2/h


Job: Milling off the surface and binder course

of three sections of a country road


Total milled area: FF = 8,000 + 7,000 + 5,000 m2 = 20,000 m2





Little obstruction is to be expected. However, as the machine

must be relocated several times, the factor 0.5 is chosen.


FP = A x FT

FP = 0.5 x 660 FP = 330 m2/h


QV = FP x T x 0.013

QV = 330 x 16 x 0.013 QV = 68.6 m3/h


QT = FP x T x 0.024

QT = 330 x 16 x 0.024 QT = 126.7 t/h



QGV = 20,000 x 16 x 0.013 QGV = 4,160 m3



QGT = 20,000 x 16 x 0.024 QGT = 7,680 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


660 m2/h

Hard asphalt

Soft asphalt









Technical data:


Milling width .................................................................................... 2.0 m

Milling depth ............................................................................ 0–32 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes

Theoretical performance values:

3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

0 500 1000 1500 2000 2500 3000 3500


Milling depthT (cm)

42 // 43


Job: Milling off the surface course of a motorway


Width: 4,0 m Length: 5,000 m






There are no obstacles to be expected on site and there

is sufficient transport capacity available. The factor 0.7 is

therefore chosen.


FP = A x FT

FP = 0.7 x 2,300 FP = 1,610 m2/h


QV = FP x T x 0.013

QV = 1,610 x 4 x 0.013 QV = 83.7 m3/h


QT = FP x T x 0.024

QT = 1,610 x 4 x 0.024 QT = 154.6 t/h



QGV = 20,000 x 4 x 0,013 QGV = 1,040 m3



QGT = 20,000 x 4 x 0.024 QGT = 1,920 t


Z = FF / FP

Z = 20,000/1.610 Z = 12.4 h, i.e. approx. 13 working hours

Hard asphalt

Soft asphalt


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

0 500 1000 1500 2000 2500 3000 3500


Milling depthT (cm)

2.300 m2/h


Job: Complete removal of the pavement on a secondary road


Width: 8 m Length: 1,500 m






The road is heavily frequented, includes numerous bends and the

trucks must travel a long way to reach the site. The factor 0.5 is

therefore chosen.


FP = A x FT

FP = 0.5 x 380 FP = 190 m2/h


QV = FP x T x 0.013

QV = 190 x 30 x 0.013 QV = 74.1 m3/h


QT = FP x T x 0.024

QT = 190 x 30 x 0.024 QT = 136.8 t/h



QGV = 12,000 x 30 x 0.013 QGV = 4,680 m3



QGT = 12,000 x 30 x 0.024 QGT = 8,640 t


Z = FF / FP


Hard asphalt

Soft asphalt


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

0 500 1000 1500 2000 2500 3000 3500


Milling depthT (cm)

380 m2/h








Technical data:


Milling width .................................................................................... 2.0 m

Milling depth ............................................................................ 0–30 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


44 // 45


Job: Milling off the mastic asphalt wearing course

of a section of motorway







Although the areas to be milled are contiguous and no obstructions

are anticipated, the waiting times for trucks must be taken into

account. Therefore, a factor of 0.6 is selected.


FP = A x FT

FP = 0.6 x 2,000 FP = 1,200 m2/h


QV = FP x T x 0.013

QV = 1,200 x 5 x 0.013 QV = 78 m3/h


QT = FP x T x 0.024

QT = 1,200 x 5 x 0.024 QT = 144 t/h



QGV = 30,000 x 5 x 0.013 QGV = 1,950 m3



QGT = 30,000 x 5 x 0.024 QGT = 3,600 t


Z = FF / FP

Z = 30,000/1,200 Z = 25 h, i.e. approx. 25 working hours


0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


2.000 m2/h


Job: Removal of the complete structure

of bituminous courses of a country road







On account of the high volume to be reclaimed, the difficult condi-

tions for transport of the reclaimed material and the delays while

waiting for trucks, a factor of 0.5 is selected.


FP = A x FT

FP = 0.5 x 300 FP = 150 m2/h


QV = FP x T x 0.013

QV = 150 x 30 x 0.013 QV = 58.5 m3/h


QT = FP x T x 0.024

QT = 150 x 30 x 0.024 QT = 108 t/h



QGV = 10,000 x 30 x 0.013 QGV = 3,900 m3



QGT = 10,000 x 30 x 0.024 QGT = 7,200 t


Z = FF / FP



0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


300 m2/h








Technical data:


Milling width .................................................................................... 2.0 m

Milling depth ........................................................................ 0–32.0 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


Milling depthT (cm)

46 // 47


Job: Milling off the surface course of the right

hand lane of a motorway








No obstructions are to be expected on the site, but problems with the

transport capacity may arise as the materials depot is relatively far

away. The factor 0.5 is therefore selected.


FP = A x FT

FP = 0.5 x 2,340 FP = 1,170 m2/h


QV = FP x T x 0.013

QV = 1,170 x 4 x 0.013 QV = 60.8 m3/h


QT = FP x T x 0.024

QT = 1,170 x 4 x 0.024 QT = 112.3 t/h



QGV = 40,000 x 4 x 0.013 QGV = 2,080 m3



QGT = 40,000 x 4 x 0.024 QGT = 3,840 t


Z = FF / FP

Z = 40,000/1,170 Z = 34.2 h, i.e. approx. 34–35 working hours

3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


Milling depthT (cm)

2.340 m2/h


Job: Complete removal of the

structure of a motorway







The entire carriageway on one side of the motorway is blocked and

an undisrupted progress of work can be expected. The factor 0.6 is

therefore chosen.


FP = A x FT

FP = 0.6 x 280 FP = 168 m2/h


QV = FP x T x 0.013

QV = 168 x 30 x 0.013 QV = 65.5 m3/h


QT = FP x T x 0.024

QT = 168 x 30 x 0.024 QT = 121 t/h



QGV = 30,000 x 30 x 0.013 QGV = 11,700 m3



QGT = 30,000 x 30 x 0.024 QGT = 21,600 t


Z = FF / FP


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

0 500 1000 1500 2000 2500 3000


Hard asphalt

Soft asphalt


Milling depthT (cm)

280 m2/h

Hard asphalt

Soft asphalt









Technical data:


Milling width .................................................................................... 2.2 m

Milling depth ............................................................................ 0–35 cm

FP (m2/h) = A x FT

QV (m3/h) = FP x T x 0.013

QT (t /h) = FP x T x 0.024

QGV (m3) = FF x T x 0.013

QGT (t) = FF x T x 0.024

Z (h) = FF/FP

Legend:













tonnes


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34

0 500 1000 1500 2000 2500 3000 3500 4000 4500


Milling depthT (cm)

48 // 49


Job: Complete removal of the pavement structure

on a motorway








Site traffic is not expected to cause much interference.

There are sufficcient trucks available. The factor 0.6 is therefore

chosen.


FP = A x FT

FP = 0.6 x 560 FP = 336 m2/h


QV = FP x T x 0.013

QV = 336 x 30 x 0.013 QV = 131.0 m3/h


QT = FP x T x 0.024

QT = 336 x 30 x 0.024 QT = 241.9 t/h



QGV = 20,000 x 30 x 0.013 QGV = 7,800 m3



QGT = 20,000 x 30 x 0.024 QGT = 14,400 t


Z = FF / FP


Hard asphalt

Soft asphalt


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34

0 500 1000 1500 2000 2500 3000 3500 4000 4500


Milling depthT (cm)

560 m2/h


Job: Milling off an airport runway








The area to be milled forms a continuous surface and nothing

is expected to obstruct the work. The factor 0.7 is therefore

chosen.


FP = A x FT

FP = 0.7 x 450 FP = 315 m2/h


QV = FP x T x 0.013

QV = 315 x 32 x 0.013 QV = 131.0 m3/h


QT = FP x T x 0.024

QT = 315 x 32 x 0.024 QT = 241.9 t/h



QGV = 100,000 x 32 x 0.013 QGV = 41,600 m3



QGT = 100,000 x 32 x 0.024 QGT = 76,800 t


Z = FF / FP


Hard asphalt

Soft asphalt


3432302826242220181614121086420

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34

0 500 1000 1500 2000 2500 3000 3500 4000 4500


Milling depthT (cm)

450 m2/h

50 // 51

Illustrations are without obligation. Subject to technical changes. Performance data depend on operational conditions. No. 01-50 EN-07/06 © by Wirtgen GmbH 2006. Printed in Germany

Wirtgen GmbHHohner Straße 2 · 53578 Windhagen · Germany

Phone: +49 (0) 26 45 / 131-0 · Fax: +49 (0) 26 45 / 131-242Internet: www.wirtgen.com · E-Mail: [email protected]

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