The tree at left an Atlantic Cedar ( Cedrus atlantica ) is located adjacent to a private residence. Following the failure of several limbs, concerns have been raised about the condition of the tree. A Tree Inspection was requested to assess the overall condition and structural stability of the tree. A site visit was made during which observations were made about the health and form of the tree. The photograph at left shows that the tree is located adjacent to power lines. The continued pruning to accommodate the power lines has produced uneven growth. This is know as crown asymmetry.

The base of the tree, shown at right consists of a single trunk to a point 8 feet above the ground. The trunk then forms two co-dominant stems. Co-dominance occurs when stems of a similar size arise from the same point on a trunk. The formation of the union at the base of these stems is often weak. The crotch is created at a very tight angle and the bark forming in the crotch often grows inward. This formation is known as included bark and as the tree continues to grow the expansion of the bark and trunk can force the dual trunks to split at the lowest point of separtion.

The area immediately below the two stems shows indications of a crack. This condition has been present for some time as the trunk of the tree has swollen in attempting to grow around the internal crack. In order to assess the crack the Resistograph was used. The Resistograph chart is shown below and should be read from right to left. The area of lower strength is shown by a lower reading on the scale. The test indicates a large void in the trunk of the tree below the crotch.

The trunk of the tree forms two more co-dominant stems at 25' and there are indications that the tree was topped. Topping causes permanent damage. The combination of multiple defects, decay and previous failure compromise this tree. The defects are so profound that the hazard posed could not be successfully reduced to an acceptable level by pruning or cabling. This tree would be removed and another planted in its place.

 

This group of condominiums has numerous large trees located next to the multiple units. The concerns of the community were both to protect the trees and to minimize damage to the buildings. A tree inspection was proposed. The initial stage involved sketch mapping of the property identifying the individual trees by location common name genus and species. Inventory information included the data from the mapping phase and an evaluation of the health, condiiton and long term viability of each tree. The assessment of viability was based on known growth requirements, susceptibility to disease, projected size, proximity to structures, facilities and utilities.

 

Thirty five separate tree species were represented. Each species has its own growth habit, form and rate of growth. The recommended treatment was specific to the form and growth rate of the trees. Some of the original plantings were close to out growing their allotted space. Other trees needed minor pruning. Some trees showed external symptoms of internal decay and were tested with the Resistograph.


 

Several units had view related issues. Some wishing to enhance their territorial view. Others desired to maintain privacy. The individual issues were addressed in co- operation with the property management company and community members.


The recommendations for treatment included: the removal of a small number of hazardous trees, maintenance pruning, view pruning, deadwooding, pruning for access and to reduce building impacts. The work was itemized on priority tree inspection sheets that identified the trees by their species and location. The recommendations were prioritized in three stages over a ten year period.


 

The suitability of tree species that were planted within the landscape of a downtown hotel was questioned. Some damage to the planters had been observed and tree growth was suspected. A site visit was made and a report generated to advise on the growth rate of several species and to assess the potential for damage to surrounding structures. A series long term management recommendations were generated.

 

Tree preservation during the development of sites with existing trees is mandated by development codes and ordinances in many municipalities. State Environmental Policy requiring the preservation of significant trees underlies local statute. Tree Inspection to establish code compliance is required to determine tree size,species, condition and location so that preservation measures may be established and replacement ratios can be determined.

 

Home | Inspection | Residential | Community | Commercial | Contact Us | Links
Examples | Failure | Inspection Method | Decay & Defect | Detection | Directory

Brought to you by