Bridgelike support structure made of fireproof ceramic bricks

Bridgelike support construction made out of fireproof ceramic bricks (10, 12, 18), which features the following arrangement in its mounted state, looked at from both its free outer ends toward the inside:

• a) two outer bearing bricks (10, 12) at the ends, each of which
• b) features at least one generally horizontal step (10s, 12s) on their inside,
• c) a keystone (18) which is arranged between the two bearing bricks (10, 12), which
• d) features at least one generally horizontal step (18s1, 18s2) on both outer sides (18a1, 18a2), wherein
• e) at least an intermediate brick (14, 16) is placed between the keystone (18) and each bearing brick (10, 12), which
• f) features at least one generally horizontal step (14is, 14as, 16is, 16as) on its inside (14i, 16i) and on its outside (14a, 16a), wherein
• g) at least one of the horizontal steps (18s1, 18s2) of each outside (18a1, 18a2) of the keystone (18) rests on a corresponding horizontal step (14is, 16is) of an inside (14i, 16i) of the corresponding intermediate brick (14, 16), and
• h) at least one horizontal step (14as, 16as) of each outside (14a, 16a) of the intermediate brick (14, 16) rests on a corresponding horizontal step (10s, 12s) of an inside (10i, 12i) of the corresponding bearing brick (10, 12), wherein
• i) the step arranged on the inside of an intermediate brick runs at a higher level than the step arranged on the outside of said intermediate brick seen in a side view of the support construction and
• j) the bearing bricks (10, 12), the intermediate bricks (14, 16) and the keystone (18) are incidentally designed and dimensioned in such a way that together, they form an integral bridgelike support construction, wherein all bricks (10, 12, 14, 16, 18) create a common, generally horizontal upper side (O), and
• k) only the outer bearing bricks (10, 12) are resting at least partially on corresponding supports (P).