Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

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Shores and Scaffolding 179
FIGURE 6-11
Section of steel tower frame. (Source: EFCO)
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The fine adjustment in the height of tower frames is made with
screw jacks installed in the bottom or top, or both, of all legs. Also, the
lower jack or adjustable base is used to compensate for uneven
ground or floor conditions. In general, the bottom jacks should be
used to level and plumb the scaffolding, and the top jacks should be
used for exact adjustments in height.
If the scaffolding is to be moved from one location to another on
a project, casters, which support the scaffolding only while it is being
moved, may be attached to the bottoms of the legs. An entire tower
frame can be moved as a single unit with a crane.
Safety Practices Using Tubular Scaffolding
As for all construction operations, there are certain practices which
should be observed when using tubular scaffolding to support formwork.
These include the following:
1. Install sufficient sills or underpinning in addition to base plates
on all scaffolding to provide adequate support from the ground.
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