Masonry Information Bulletin - Good Scaffold Practices
1 - From the Ground Up
from Construction Safety Association of Ontario Magazine, Winter 2000-2001)
issue is one in a series of good scaffold practices. It is a joint initiative
between labor and management designed to increase awareness of safe working
practices in the masonry industry.
indicate that the most common injuries are slips and falls. Over 50%
of these injuries occur because of improper scaffold practices. The
information presented here deals with site preparation, mudsills,
baseplates and leveling screws.
- ground conditions
- change in
- Soil must
be level and firm
- Mud and
soft soil should be replaced with compacted gravel or crushed
- Where mudsills
must be placed on sloping ground, the area should be leveled,
if possible, by excavating rather than by backfilling.
- Clear ice
and snow before placing mudsills
Sections 128 (1)c of
the Construction regulations require that every scaffold have footings,
sills or supports that are sound, rigid and capable of supporting twice
the maximum load to which the scaffold may be subjected without settlement
- Use 2" x
10" planks for mudsills.
- Lay Planks
under at least two supports, either along the scaffold or across
- Center scaffold
baseplates on the mudsill and extend mudsills two feet past the
last scaffold frame.
- Use leveling
screws to compensate for uneven ground and to ensure that scaffold
is level and plumb.
weight on mudsill and prolong plank life.
to mudsill and prevent movement due to impact, vibration or uplift
due to improper loading.
for blocking under mudsill.
Allow for easy leveling and plumbing of scaffold.
screws can be adjusted up or down so that the scaffold sits level. Be
careful not to overextend screws.
Refresher Quiz -
Answer True or False
should be centered on and nailed to mudsills (T/F)
2. Mudsills should never extend beyond end of scaffold. (T/F)
3. For minor adjustments to plumb, use leveling screws. (T/F)
are at the bottom of the page.
For more information and training
Construction Safety Association of Ontario
Court South, Etobicoke, Ontario M9W 5M7
true 2) false 3) true
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