Batten bar assembly

A system, comprising:

• a batten bar configured to secure first and second adjacent flat panels to a structural framework, wherein the batten bar comprises:
• first and second inside legs that define a central channel;
• a first outside leg, the first outside leg and the first inside leg defining a first seal recess configured to receive and retain a first seal, wherein the first outside leg comprises a first plurality of teeth configured to contact the first flat panel;
• a second outside leg, the second outside leg and the second inside leg defining a second seal recess configured to receive and retain a second seal, wherein the second outside leg comprises a second plurality of teeth configured to contact the second flat panel;
• and
• a plurality of apertures disposed along the length of the batten bar;
• wherein the batten bar comprises a single piece, and wherein, in an installed configuration, the first inside leg and the first outside leg are configured to contact the first flat panel along a first common plane, and the second inside leg and second outside leg contact the second panel along a second common plane.

A storage tank comprising:

• a cylindrical wall;
• and
• a dome roof comprising:
• a plurality of beams, each beam comprising:
• a first end;
• a second end;
• and
• a head comprising a top surface and a first slot formed in the top surface wherein the first slot extends a length of the beam, wherein each beam comprises a single part;
• a plurality of nodes coupling the first or second ends of adjacent beams of the plurality of beams to one another;
• a plurality of panels, wherein each panel is disposed on the top surface of one or more of the plurality of beams such that each panel is supported by one or more beams of the plurality of beams along one or more outer edges of each of the plurality of panels, and wherein each of the plurality of panels is substantially flat between the outer edges of the panel;
• a plurality of batten bars, each batten bar of the plurality of batten bars disposed on top of first and second adjacent panels of the plurality of panels, securing the first and second adjacent panels of the plurality of panels to one of the plurality of beams, wherein each batten bar of the plurality of batten bars comprises:
• first and second inside legs that define a central channel;
• a first outside leg comprising a first plurality of teeth configured to contact the first panel of the plurality of panels, the first outside leg and the first inside leg defining a first seal recess retaining a first seal disposed within the first seal recess, wherein the first inside leg and the first outside leg directly contact the first panel of the plurality of panels along a first common plane;
• a second outside leg comprising a second plurality of teeth configured to contact the second panel of the plurality of panels, the second outside leg and the second inside leg defining a second seal recess retaining a second seal disposed within the second seal recess, wherein the second inside leg and the second outside leg directly contact the second panel of the plurality of panels along a second common plane;
• and
• a plurality of apertures disposed along a length of the batten bar;
• wherein the batten bar comprises a single piece;
• and
• a plurality of fasteners extending through the plurality of apertures and engaging with the slots of each of the plurality of beams to hold each of the plurality of panels in place.