Four piers support the weight of the dome at the central crossing; the piers of the four apses that project from each outer wall are also strong, to withstand the outward thrust of the half-domes upon them.
The piers of the four apses that project from each outer wall are also strong, to withstand the outward thrust of the half-domes upon them. Four piers support the weight of the dome at the central crossing.
Four piers support the weight of the dome at the central crossing. The piers of the four apses that project from each outer wall are also strong, to withstand the outward thrust of the half-domes upon them.
Four piers support the weight of the dome at the central crossing. The piers of the four apses that project from each outer wall are also strong, to withstand the outward thrust of the half-domes upon them.