4
3. Ladder System Guidelines
i. The ladder shall be fully extended with the
rungs or treads level with the ground.
ii. The ladder must be erected on a firm, unmovable
surface with a maximum gradient of 15°.
iii. When positioning the ladder take into account
the risk of collision with the ladder, e.g. from
pedestrians, vehicles ordoors.
iv. Identify any electrical risks in the work area,
such as overhead lines or other exposed
electrical equipment.
v. The ladder should be stood on both feet; not
supported on the rungs or steps.
vi. Ladders shall not be positioned on slippery
surfaces (such as ice, shiny surfaces or
significantly contaminated solid surfaces)
unless additional eective measured are taken
to prevent the ladder slipping or ensuring
contaminated surfaces are suciently clean.
vii. It is recommended that the ladder is positioned
at the correct working angle of 75°. To ensure
correct angle, use the angle indicator marked
on the rail and/or the level-bubble in the
TerrainMaster base. This position is often referred
to the 4:1 rule where the feet of the ladder are one
unit out from the vertical contact surface for every
4 units measured vertically to the point of contact
of the ladder to the vertical surface.
ii. If using the ladder for pole work, the top lash
must always be secured around the pole.
iii. TerrainMaster legs must always be deployed
totheir widest position allowing for
300mm +/-15mm step height to ground.
iv. If transitioning from the ladder system to a
polestrap, a work procedure must cover
thisprocess.
max.
150
kg
i. The maximum total load for the
ladder is 150kg including tools
andequipment.
4. Positioning and Erecting
theLadder