Illustration Of Undercuts

01. Illustration of Undercuts. (3-31-22) IDAHO ADMINISTRATIVE CODE IDAPA 24.39.80 – Minimum Safety Div. of Occupational & Professional Licenses Standards and Practices for Logging Section 302 Page 22 FIGURE 302.01.a. – CONVENTIONAL UNDERCUT a. Conventional Undercut. May be made with parallel saw cut and a diagonal cut. Backcut (D) shall be above undercut. (3-31-22) IDAHO ADMINISTRATIVE CODE IDAPA 24.39.80 – Minimum Safety Div. of Occupational & Professional Licenses Standards and Practices for Logging Section 302 Page 23 FIGURE 302.01.b. – HUMBOLT UNDERCUT b. Humbolt Undercut. (See Figure 302.01.b.). The cut is the same as a conventional cut (See Figure 302.01.a.) except that waste is on the stump. Backcut (D) shall be above undercut. (7-1-25) IDAHO ADMINISTRATIVE CODE IDAPA 24.39.80 – Minimum Safety Div. of Occupational & Professional Licenses Standards and Practices for Logging Section 303 Page 24 FIGURE 302.01.c. – OPEN FACE UNDERCUT c. Open Face Undercut. A cut in which two (2) angle cuts are made with the saw (See Figure 302.01.c.) -- It is used when it is necessary that the face does not close until the tree is near the ground. (3-31-22)