Historique de l'étape n° 2 de India Mark II Riser Main (Lifting Spanners) Replacement

Modifications apportées à l'étape #2

Modifié par Andrew Optimus Goldheart — 29 juil. 2013

Modification approuvée par Andrew Optimus Goldheart

-	[* black] Insert wisdom here.
+	[* black] Add the other two lifting arms.
+	[* black] Ensure three things about the arms:
+	[* black] They must be equally spaced around the riser main (120° apart).
+	[* black] The arms must not touch each other, the coupling at the top, or the pipe vise at the bottom.
+	[* black] The openings should alternate, to keep the riser main secure.