WAC 296-54-569
Anchoring. (1) Stumps used to anchor
guylines and skylines must be carefully chosen for position,
height, and strength. When necessary, stump anchors must be
tied back to distribute the load.
(2) Stump anchors when spiked must be barked where
attachments are to be made.
(3) Stump anchors must be adequately notched to keep the
line in place and not adversely affect the stump strength.
(4) Employees must not stand close to the stump or tree
or in the bight of lines as the guyline or wraps are being
tightened.
(5) When spikes or cable clamps are used, guylines or
skylines must be anchored with at least two and one-half wraps
around the stumps. Wraps must:
(a) Be well secured with at least eight spikes or six
staples in sound wood on the first and last wrap; or
(b) Have the end of the line secured with two wire rope
clips on lines up to one inch diameter and three wire rope
clips on lines one inch diameter and over.
(6) Properly installed deadman anchors are permitted.
Guylines must not be directly attached to deadman anchors. Suitable straps or equally effective means must be used.
(7) Guylines of portable spars, wood spars or towers must
not be anchored to standing trees if the unit is used as a
head tree, except as specified in subsection (8) of this
section.
(8) In special cases such as hanging on foreign ownership
or in cable thinning operation where frequent moves make the
retrieval of fell guyline trees difficult, the following will
apply:
(a) Standing trees within reach of a work area or haul
road may be used provided:
(i) They are solid;
(ii) Have a sound undisturbed root system;
(iii) If fell, would be suitable for a guyline stump or
tailhold as required in subsection (1) of this section; and
(iv) Are properly tied back to distribute the load; or
(b) Guyline and/or tailhold anchor trees, when located so
they will not fall into the work area or haul road, need not
be tied back if stable.
Note:
Under no circumstances must an employer accept a requirement, or be required to use standing trees to anchor
guylines.
(9) Rock bolt anchors must be grouted, installed, tested,
and maintained according to the rock bolt manufacturer's
recommendations.
(10) Anchors must be regularly inspected while the
logging operation is in progress. Insecure or hazardous
anchors must be corrected immediately.
(11) Artificial earth anchors must be installed and used
according to their design specifications and manufacturer's
recommendations.
(12) Mobile equipment may be used to anchor skylines,
running lines and guylines, provided the weight of the machine
or other methods are used to ensure machine stability for all
applied loads.
