Vertical hole brick has two framework rib progressions, following one after other in direction of first cross sectional axis, extending approximately in anti-phase in direction of second cross sectional axis

摘要

Two framework rib progressions(24) following one after the other in the direction of the first cross sectional axis(X) extend approximately in anti-phase in the direction of the second cross sectional axis(Y). The web band(26) extending between these framework rib progressions in the direction of the second cross sectional axis is constructed hollow with hole cross sections(34) following one after the other in the direction of the second cross sectional axis. The web band hole cross sections following one after the other in the direction of the second cross sectional axis are separated from one another by intermediate ribs(32) extending in the direction of the first cross sectional axis. An Independent claim is included for an extrusion die to manufacture the proposed brick.