Liquid tank building system using movable scaffolding

A liquid tank building system comprising:

• a structure comprising a plurality of walls, which define an interior space, wherein the plurality of walls comprises a first sidewall, a second sidewall, and a top wall interconnecting the first sidewall and the second sidewall;
• a plurality of scaffolding rails extending in a first direction within the interior space, wherein at least one pair of the scaffolding rails are installed onto surfaces that are generally opposing each other;
• a scaffolding located within the interior space and supported at least partly by the scaffolding rails, wherein the scaffolding is slidable within the interior space along the scaffolding rails, wherein the scaffolding comprises a first side section, a second side section and a top section interconnecting the first side section and the second side section;
• a first carrier rail provided in the first side section;
• a first carrier movably coupled to the first carrier rail so as to move along the first carrier rail from a bottom portion of the first side section to a top portion of the first side section
• a second carrier rail provided in the first side section;
• and
• a second carrier movably coupled to the second carrier rail so as to move along the second carrier rail from the bottom portion of the first side section to the top portion of the first side section.