What codes and regulators say about rigging, felling, cranes, storm cleanup and wildfire work, plus the arithmetic tools for log weight and loads.
20 pages in this topic. Each guide names its sources and the date they were read.
Number, Ofqual reference, hours, entry awards, assessment time and unit content for the Level 3 Certificate of Competence in Aerial Tree Rigging, plus how Lantra Awards words its own rigging award.
The vocabulary of a ground crew on a rigging job, grouped by kind: gear, knots by name, methods, load words and calls.
What regulators and standards bodies say about connectors, pulleys and rope devices used in tree work, and what the kN figures and the CE and UKCA marks on them are said to mean.
Type a log's diameter and length and pick a species to see an estimated green weight of the wood, using the Forest Service table.
Forest Service green weights per cubic foot, and the unit converter.
What regulators and official pages say about cranes used for tree removal, who must hold an operator licence or certificate, and who may sling the load, country by country.
After a big wind or ice storm the work piles up and the hazards change.
National, state and provincial emergency management and civil defence bodies, in each country's directory page.
A side by side of what regulators in Oregon and Victoria say about utility wildfire or bushfire plans and the clearance of trees from power lines, with the regions not yet read marked as such.