A support for a multi-layer resiliently mounted floor for indoor stadia or similar comprises two vertically spaced layers of slats connected by spacer blocks. The upper layer of slats (1) is subdivided by separating joints (4) in the region of the spacer blocks (3), while the lower layer of slats (2) is not subdivided but has longitudinally spaced vertical supports (5). The supports (5) are offset with respect to the spacer blocks (3). The resulting support ensures uniform distribution of stresses in the individual structural elements when the floor is subjected to dynamic loads.