ITEM
666 PRUNING EXISTING TREES
666.01
Description
666.02 Wound
Dressing
666.03 Pruning
666.04 Painting
666.05 Removal
of Foreign Materials from Trees
666.06 Removal
of Rubbish
666.07 Method
of Measurement
666.08 Basis of
Payment
666.01 Description. This work consists of
pruning trees.
666.02 Wound Dressing. Use approved material
specifically manufactured for tree wound dressing.
666.03 Pruning. Prune all trees to make them
shapely, typical of the species, using standard drawings on the plans as a
guide. Use approved pruning tools and methods.
Remove
all dead wood and dead branches 1 inch (25 mm) or more in diameter.
Remove all branches interfering with or hindering the healthy growth of the
tree with a good clean cut made flush with the parent trunk. Remove all
diseased branches. For branches that may be partly dead, yet have a good
healthy lateral branch between the dead part and the base, cut off the branch
with a good clean slanting cut close to and beyond the healthy lateral branch.
Remove
low hanging, unsound, or unsightly branches on trees or shrubs designated to
remain. Remove all branches or growth interfering with the free traffic
movement on the highway. Trim branches of trees extending over the
roadbed to provide a clear height of 20 feet (6 m) above the roadbed surface.
Cut
off all stubs or improper cuts resulting from former pruning or limbs that have
been broken flush with the trunk or limb of the tree in order to ensure proper
healing.
666.04 Painting. Paint all cuts or wounds
measuring 1 inch (25 mm) or more in diameter and all exposed wood and scars
resulting from previous work or damage with approved tree wound dressing.
666.05 Removal or Foreign Materials from Trees. Remove
all nails, spikes, bolts, wire, or other foreign materials driven into or
fastened to the trunk or branches of the tree, or, if directed by the Engineer,
cut them flush with the bark of cambium layer to ensure complete healing over.
666.06 Removal of Rubbish. Legally
use, burn, or dispose of all material according to 105.16 and 105.17.
666.07 Method of Measurement. The
Department will measure Pruning Existing Trees by the number of each size,
completed and accepted.
666.08 Basis of Payment. The
Department will pay for accepted quantities at the contract prices as follows:
Item
Unit
Description
666
Each
Pruning Existing Trees,
3 to 8-inch (80 to 200 mm) Diameter
666
Each
Pruning Existing Trees,
8 to 16-inch (200 to 400 mm) Diameter
666
Each
Pruning Existing Trees,
16 to 24-inch (400 to 600 mm) Diameter
666
Each
Pruning Existing Trees,
24 to 36-inch (600 to 900 mm) Diameter
666
Each
Pruning Existing Trees,
36 inches (900 mm) and Over