Interlocking floor brick for non-recovery coke oven

An improved non-recovery coke oven single layer refractory floor which, as compared to the prior art, has a substantially undiminished load carrying capacity with reduced floor weight and increased transfer of heat from sole flues under the floor to a coal charge disposed on top of the floor, said floor comprising a number of floor segments equal to the number of sole flues in the oven, wherein each floor segment comprises a pair of trunnion bricks and a center bridge brick disposed in end-to-end relationship and together spanning a width of a corresponding sole flue, and wherein said upper surfaces of said floor segments have a flat top and wherein lower surfaces of the center bridge brick and of an adjacent portion of each trunnion brick are curved to form an arch spanning a width of a corresponding sole flue and adapted to transform a vertically directed tension force applied to said flat top of the segment to a substantially horizontally directed compressive force.