The equipment which our consultant used was a resistograph. The Resistograph is a probing device which is used to detect decay in trees and other items made of wood. The Resistograph is a modified drill that drives the probe into the wood at a constant speed. It measures the difference in torque (power/force) which is required to drive the probe into the wood. The softer the wood (indicating denatured/compromised wood) the less torque is required.

The results from the Resistograph readings, indicated that the posts were generally in good order. The only fairly significant anomalies noted were from the first test on Post 4. The drill generally pitched more deeply and widely than all the other tests. It is possible that the drill was extending through latent radial cracks in the wood

For safety reasons, our consultant has recommended that tests are carried out on the posts on a biennial basis (at least once every two years). It was also recommended that with reference to using the Resistograph for testing for decay, an alternative was to randomly test the poles at differing levels using tomography. This method is less invasive and should be considered as a suitable alternative to micro drilling through the poles.

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The purpose of the AMS is to detail how construction works can be carried out close to trees without causing damage to the crown or the root system. It is given to all operatives during the construction process and provides all the information required to fully protect trees during the construction process.

This method statement provides not only information about what protection methods are to be implemented but also at what stage of construction they should be performed. We also gave details of tree planting specifications, should this be a requirement for the site. In this case a single tree required removal therefore to accommodate the proposals, it was proposed to plant trees on site. The planting of trees may go ahead in the first tree planting period after construction is complete.

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The property surveyed was a detached two-storey dwelling with gardens and a patio to the side and the rear which contained a variety of trees and shrubs, additionally there were several items of vegetation located on the adjacent land but within influencing distance to the property.

Out of the 18 trees surveyed one tree was given a category one recommendation and 7 trees, the category 2 recommendation. Category 1 recommendations are made for structural/safety reasons and are recommended to be undertaken immediately. Category 2 works are of a cosmetic or general nature only, and usually do not require to be carried out as urgently.

The tree which was recommended for removal was a semi-mature Crab Apple which had a basal cavity extending upto the stem. Our consultant concluded that provided the category 1 & 2 works were undertaken in the near future, and that the trees were inspected on a regular basis, there were no reasons as to why the mortgage applicant could not proceed at the current time.

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Rochdale uses a Tree Management System based around a GIS system. In providing information, we use GPS survey equipment to accurately capture tree location details, and these location details along with key safety (BS5837) details are entered into their system. The information is captured on mobile tablets, and in line with Rochdale’s requirements is then reformatted for entry into their database system. Trees are individually numbered and referenced, meaning that we can be very specific about work and safety recommendations. Again, recommendations for work and timeframes are driven by a number of “site sensitivity” factors including tree condition, potential risk, community amenity values and other issues.

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