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The ribs seen outside before collection, the three ends show one half
on the locking pieces and the bolt holes. And for the wise it also shows
the shadow of the photographer. |
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The ribs from the other end showing the other three locking pieces,
also on the top one can be seen where the casting froze and the wave formation
rippling along the top edge. The holes where the surface crust formed as
the metal air cooled.
Defects explained |
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Open cast pouring of the pillars, the one on the right had been cast
5 minutes before.
The pillars were 5 metres long. |
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