A primary shell support structure comprising two-shell surface support structure modules, each of which comprises a structure in the form of an octagonal, twelve-edged, convex polyhedron formed from six quadrilaterals, which in the special case where the edges are orthogonal form a rectangle, in which opposing faces are formed as surfaces, which form upper and lower secondary shell elements (1,2), wherein the upper and lower secondary shell elements (1,2) are spaced apart from each other and wherein cross members are installed along the four remaining edges and wherein diagonal members are installed by connecting them to the corners of the upper and lower secondary shell elements (1,2), whereby the edges of the surface support structure modules adjacent to the upper and lower secondary shell elements (1,2) abut each other, whereby a two-shell surface support structure in the form of a primary shell support structure having a one- or two-axis framework supporting effect is formed, whereby the space between the secondary shell elements (1 and 2) can be used as an installation or storage space, characterized in that auxiliary frames are used in the space between the secondary shell elements (1,2), which assume the function of the cross and diagonal members (3,6) in areas in which the cross and diagonal members would prevent the use as an installation or storage space, whereby rails are arranged in the space between the secondary shell elements (1,2), on or upon which storage containers could be moved, whereby one or more openings are arranged in the secondary shell elements (1,2), whereby said storage containers are accessible through said one or more openings. A primary shell support structure comprising two-shell surface support structure modules, each of which comprises a structure in the form of an octagonal, twelve-edged, convex polyhedron formed from six quadrilaterals, which in the special case where the edges are orthogonal form a rectangle, in which opposing faces are formed as surfaces, which form upper and lower secondary shell elements (1,2), wherein the upper and lower secondary shell elements (1,2) are spaced apart from each other and wherein cross members are installed along the four remaining edges and wherein diagonal members are installed by connecting them to the corners of the upper and lower secondary shell elements (1,2), whereby the edges of the surface support structure modules adjacent to the upper and lower secondary shell elements (1,2) abut each other, whereby a two-shell surface support structure in the form of a primary shell support structure having a one- or two-axis framework supporting effect is formed, whereby the space between the secondary shell elements (1 and 2) can be used as an installation or storage space, characterized in that auxiliary frames are used in the space between the secondary shell elements (1,2), which assume the function of the cross and diagonal members (3,6) in areas in which the cross and diagonal members would prevent the use as an installation or storage space, whereby rails are arranged in the space between the secondary shell elements (1,2), on or upon which storage containers could be moved, whereby one or more openings are arranged in the secondary shell elements (1,2), whereby said storage containers are accessible through said one or more openings.