Spur fit , sharpening and adjustment |
97 |
Sharpening gaffs |
97 |
Spur climbing - basic technique |
99 |
Advancing the lanyard |
100 |
Self-arrest |
101 |
Passing a branch or obstacle |
102 |
2.2.5 |
Work positioning |
103 |
Work positioning using rescue climbing systems |
103 |
|
Rope angle |
104 |
|
Branch walking |
105 |
|
Mechanical advantage systems for branch walking and work positioning |
106 |
|
Branch walking with spurs |
107 |
|
Lanyard use |
108 |
|
2.2.6 |
Redirects |
109 |
Redirect safety |
110 |
|
Types of redirect |
111 |
|
Setting a redirect |
112 |
|
2.3.1 |
Evaluating forces in rescue rope systems |
115 |
1 : Forces in ropes |
115 |
|
2 : Simple mechanical advantage |
115 |
|
3 : The angle rule |
116 |
|
4 : The force rule |
116 |
|
5 : Leverage and bending moment |
119 |
|
6 : Friction |
123 |
|
7 : Deflection forces |
125 |
|
8 : Mechanical advantage |
130 |
|
9 : Shock load |
131 |
|
2.3.2 |
Evaluating tree structure |
132 |
The tree as a biomechanical structure |
132 |
|
Thigmomorphogenesis |
133 |
|
Mechanical stress |
134 |
|
Structural strength of timber |
136 |
|
Branch and stem attachment |
137 |
|
Strength of branch and stem unions |
137 |
|
Epicormic branches |
138 |
|
2.3.3 |
Common structural defects |
139 |
Fungi and decay |
139 |
|
Cracks , splits and other structural defects |
139 |
|
Cavities and hollows |
140 |
|
Root damage |
141 |
|
Tree species and behaviour |
142 |
|
2.3.6 |
Alphabetical list of common tree hazards |
145 |
Branch unions |
147 |
|
Cracks or splits |
147 |
|
Deadwood |
148 |
|
Decay |
148 |
|
Electrical conductors |
149 |
|