BoSS Ladderspan User Guide
9
The MAXIMUM SAFE WORKING LOAD (the combined weight of
the users, tools and materials) that may be placed on the tower is the
total weight less than the self-weight of the tower. The total weight for
the towers shown in the schedule is 950kg.
Example 1:
A 1450 tower built using the 3T method with a 4.2m platform height
and a platform length of 1.8m has a self-weight of 175kg.
950kg
Total Weight -175kg
Self-weight =775kg maximum safe working load
(users, tools and materials)
Example 2:
A 1450 tower built using the 3T method with a 11.7m platform height
and a platform length of 2.5m has a self-weight of 436kg.
950kg
Total Weight -436kg
Self-weight =514kg maximum safe working load
(users, tools and materials)
For greater heights and loads, consult BoSS for guidance.
Quantity Schedule
NUMBER OF WORKING PLATFORMS ALLOWED
1450 Width Towers
PLATFORM LOADING
On a 1450 tower a platform may comprise of a single deck or two
decks placed side by side. The maximum safe working load
(the combined weight of the users, tools and materials) that may be
placed on a platform is 275kg. This must be evenly distributed over
either one deck, or two decks placed side by side.
The quantities on page 7 and 8, will enable BoSS towers to be built
safely and therefore comply with the requirements of the Work at
Height Regulations. They include double guardrails to all platforms,
and toeboards will need to be added if any levels are used as working
platforms and for storage of materials.
EN 1004 requires platforms at least every 4.2m, and these measures
will exceed that requirement.
