1030 Climb Trees for Rigging
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Unit 1030 Title Climb Trees for Rigging Document type Learning resource In consultation with industry subject matter experts, the BC Forest Safety Council (BCFSC) facilitated the production of this material. Funding was provided by the Government of Canada, the Province of British Columbia, and industry in-kind contributions. Printed copies are considered uncontrolled and may be outdated. Current versions are available from the BCFSC. Refer to https://www.bcforestsafe.org/node/2823 for more information. Feedback is welcome and may be sent to [email protected]. lng_1030.docx Page 2 of 153 Date: March 24, 2018 Table of Contents Unit Introduction ................................................................................................... 8 Why it’s important for you to learn this unit ..................................................... 8 Are you ready to take this unit? ....................................................................... 8 Does this unit apply to you? ............................................................................ 8 Section 1030-01: Elevated Support ..................................................................... 9 Key Point 1.1: Benefits of Using an Elevated Support ...................................... 10 Key Point 1.2: Types of Elevated Support ......................................................... 11 Single tree support......................................................................................... 11 Two blocks on the same side .................................................................... 11 Two blocks opposite .................................................................................. 11 Double tree support ....................................................................................... 12 Leaning tree support ...................................................................................... 13 Key Point 1.3: Forces on Support Tree ............................................................. 15 Buckle guys ................................................................................................... 16 Failure zone of rigged trees ........................................................................... 17 Additional notes on force on support trees .................................................... 18 Types of Elevated Support and Forces—Self-Quiz ........................................... 20 Types of Elevated Support and Forces—Quiz Answers ................................... 21 Section 1030-02: Guylines ................................................................................. 22 Key Point 2.1: Guyline Requirements for Intermediate Support ........................ 23 General backspar guyline information ........................................................... 23 Guyline requirements – skyline systems ....................................................... 23 Single support system ............................................................................... 23 Double tree support system ...................................................................... 24 Guylines for Intermediate Support—Self-Quiz .................................................. 26 Guylines for Intermediate Support—Quiz Answers ........................................... 28 Guyline systems – grapple yarder backspars ............................................... 29 Grapple backspar setups ............................................................................... 29 Backspar 1................................................................................................. 29 Backspar 2................................................................................................. 31 Lift tree ....................................................................................................... 32 Tightening sequence ..................................................................................... 34 Key Point 2.2: Guyline Requirements for Tail Hold ........................................... 35 Guylines and Backspars—Self-Quiz .................................................................. 36 Guylines and Backspars—Quiz Answers .......................................................... 38 Section 1030-03: Planning ................................................................................. 39 Key Point 3.1: Planning Requirements before Climbing a Tree for Rigging ..... 40 Planning the back end ................................................................................... 40 Tree selection ................................................................................................ 41 Suitable anchors ............................................................................................ 41 lng_1030.docx Page 3 of 153 Date: March 24, 2018 Planning Requirements before Climbing a Tree for Rigging—Self-Quiz .......... 43 Planning Requirements before Climbing a Tree for Rigging—Quiz Answers ... 44 Key Point 3.2 Equipment Requirements to Climb a Tree for Rigging ............... 45 Equipment Requirements to Climb a Tree for Rigging—Self-Quiz ................... 53 Equipment Requirements to Climb a Tree for Rigging—Quiz Answers ............ 54 Section 1030-04: Prepare to Climb .................................................................... 55 What you will learn in this section.................................................................. 55 Key Point 4.1: Inspect Equipment ...................................................................... 56 Climbing inspection checklist ......................................................................... 56 Two types of spurs......................................................................................... 56 Linesman spurs ......................................................................................... 56 Bark spurs ................................................................................................. 57 Inspect Equipment—Self-Quiz ........................................................................... 58 Inspect Equipment—Quiz Answers ................................................................... 59 Key Point 4.2: Prepare the Chainsaw ................................................................ 60 Components of a chainsaw ........................................................................... 60 Chainsaw Components—Self-Quiz ................................................................... 61 Chainsaw Components: Quiz Answers ............................................................. 63 Chainsaw maintenance ................................................................................. 64 Chainsaw safety guidelines ........................................................................... 64 Tools and materials needed .......................................................................... 65 Chainsaw maintenance checklist .................................................................. 67 Chainsaw Maintenance—Self-Quiz ................................................................... 69 Chainsaw Maintenance—Quiz Answers............................................................ 71 Key Point 4.3: Attach Climbing Spurs to Legs ................................................... 72 Attaching Spurs—Self-Quiz ............................................................................... 75 Attaching Spurs—Quiz Answers ........................................................................ 76 Section 1030-05: Climb Trees for Rigging ......................................................... 77 What you will learn in this section.................................................................. 77 Key Point 5.1: Climb Trees in Accordance with Best Practices ........................ 78 Before you climb – preparation and inspections ........................................... 78 Put on climbing harness ................................................................................ 79 Climbing a tree ............................................................................................... 80 Additional safety precautions for climbing ..................................................... 81 Climbing the tree – from the ground to prepping to attach a rope block ....... 81 Climbing the tree – attaching rope block (running lines) ............................... 82 Climbing down the tree .................................................................................. 84 Alternate method ........................................................................................... 85 Climb Trees in Accordance with Best Practices—Self-Quiz ............................. 86 Climb Trees in Accordance with Best Practices—Quiz Answers ...................... 87 Key Point 5.2: General Safety Guidelines for Working in a Tree ...................... 88 lng_1030.docx Page 4 of 153 Date: March 24, 2018 Climbing gear inspection checklist ................................................................ 88 General Safety Guidelines for Working in a Tree—Self Quiz ............................ 90 General Safety Guidelines for Working in a Tree—Quiz Answers .................... 91 Key Point 5.3: General Chainsaw Guidelines when Working in a Tree ............ 92 General Chainsaw Guidelines when Working in a Tree—Self-Quiz ................. 93 General Chainsaw Guidelines when Working in a Tree—Quiz Answers .......... 94 Section 1030-06: Topping Trees.......................................................................