Section 2101. Clearing and Grubbing
A. Clearing: Cut and remove trees 3 inches or more in diameter. Cutting shall be performed between October 1st and March 31st.
B. Grubbing: Remove stumps, including roots, to a depth of at least 12 inches.
C. Removal of Logs and Down Timber: Remove logs and down timber encountered on the work.
D. Hedge Removal: Pull or grub hedge fences of Osage Orange or shrubs planted close together in rows. If any individual tree, of those composing a hedge, has a diameter greater than 6 inches, it will be measured separately as a tree.
E. Brush and Shrub Removal: Pull or grub trees and shrubs less than 3 inches in diameter, including roots, which are not classified as hedge.
F. Removal of Growing Corn: Cut stalks to a maximum height of 5 inches above the ground, remove the stalks, and thoroughly disk the corn stubble.
G. Vegetation and Rubbish Removal: Remove vegetation and all rubbish encountered on the right-of-way.
H. Field Fence: Remove field fence from the project.
None.
A. Remove woody and other herbaceous vegetation, field fences, and rubbish from the right-of-way and from borrow pits furnished by the Contracting Authority. Do not remove field fences, trees, shrubs, and grasses that are to be preserved as indicated in the contract documents or as designated by the Engineer.
B. Unless shown otherwise in the contract documents or ordered by the Engineer, clear and grub the area within the need line, or the entire right-of-way including borrow pits and the area covered by embankments. All of this material which is removed from the project remains the property of the Contractor.
C. Material from clearing and grubbing may be burned according to 567 IAC 23.2 and additional local ordinances. The unburned materials may be buried on State of Iowa right of way at locations approved by the Engineer.
D. Material from clearing and grubbing may be processed by such means as chipping of logs, down timber, or brush, for mulching material, or salvaging of logs and down timber for firewood. Other vegetation including corn stubble may be disked into the existing ground surface.
E. Haul the materials from clearing and grubbing (other than field fence) that are not handled on the project to a "yard waste" landfill.
F. Remove field fence from the project. Field fence may be deposited in an appropriate landfill.
2101.04 Method of Measurement.
Measurement for Clearing and Grubbing, removal, and clean-up of other material in units (calculated to the nearest 0.1 unit) or by area will be as follows:
1. Clearing and Grubbing will be the quantity shown in the contract documents.
a. Trees 3 inches in diameter or greater will be counted and the circumference will be measured at a height of 18 inches above the ground. The diameter will be calculated by measuring the circumference to the nearest inch and dividing by 3.14. See Table 2101.04-1 for identification of units per tree for clearing, grubbing, and clearing and grubbing.
b. Stumps 3 inches in diameter or greater will be counted and the diameter, in inches, calculated by determining the average diameter at cutoff. See Table 2101.04-1 for identification of units per stump for grubbing.
c. Logs and down timber 3 inches in diameter or greater will be measured in a manner similar to that used for trees. Measurement will be at a point 18 inches from the end of the log with greatest diameter or 18 inches from the base of the tree for down timber for clearing. See Table 2101.04-1 for identification of units per log and down timber for clearing.
d. Hedge rows will be measured in linear feet and converted to units using a rate of 30 units per station of hedge row.
e. Brush will be measured in square feet and converted to units by using a rate of 0.8 units per 100 square feet of brush.
f. Growing corn will be measured in square feet and converted to units by using a rate of 0.2 units per 100 square feet of growing corn.
g. Vegetation removal will not be measured for payment.
h. Field fence removal, included in clearing and grubbing, will be measured in stations and converted to units at a rate of 6.0 units per station of fence.
2. For each tree or stump counted as identified in Articles 2101.04, A, 1, a; b; and c, units will be determined as identified in Table 2101.04-1.
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Table 2101.04-1: Clearing and Grubbing Units |
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Size Diameter |
Unit |
||
|
Clearing |
Grubbing |
Clearing and Grubbing |
|
|
3 in. to 6 in. inclusive |
0.5 |
1.1 |
1.6 |
|
Over 6 in. to 9 in. inclusive |
1.1 |
2.8 |
3.9 |
|
Over 9 in. to 12 in. inclusive |
1.9 |
4.8 |
6.7 |
|
Over 12 in. to 15 in. inclusive |
2.8 |
6.6 |
9.4 |
|
Over 15 in. to 18 in. inclusive |
4.7 |
8.8 |
13.5 |
|
Over 18 in. to 24 in. inclusive |
8.4 |
13.6 |
22.0 |
|
Over 24 in. to 30 in. inclusive |
11.4 |
17.6 |
29.0 |
|
Over 30 in. to 36 in. inclusive |
22.0 |
28.0 |
50.0 |
|
Over 36 in. to 42 in. inclusive |
30.0 |
50.0 |
80.0 |
|
Over 42 in. to 48 in. inclusive |
40.0 |
80.0 |
120.0 |
|
Over 48 in. to 60 in. inclusive |
60.0 |
100.0 |
160.0 |
|
Over 60 in. to 72 in. inclusive |
80.0 |
120.0 |
200.0 |
|
Over 72 in. |
120.0 |
160.0 |
280.0 |
1. The area in acres will be based on that shown in the contract documents, computed from a need line, or computed from a right-of-way line if the limits are not shown for this item in the contract documents.
2. Within these limits, an item for clearing and grubbing in units will not be measured for payment.
Payment for Clearing and Grubbing, removal of trees, stumps, logs and down timber, hedge rows, brush, field fence, and growing corn will be made at the contract unit price per unit or per acre as indicated below. If the Contractor is required to save material less than 6 inches in diameter or to process material saved to an extent greater than is necessary to produce neat piles, this extra saving and processing is considered extra work and payment will be as provided in Article 1109.03, B. Removal and disposal of household rubbish and other nonhazardous rubbish is considered extra work and payment will be as provided in Article 1109.03, B.
Number of units satisfactorily completed.
Number of acres satisfactorily completed.