The Timber Pagoda at Fogong Temple
Yingxian Wooden Pagoda is formally known as the Sakyamuni Pagoda of Fogong Temple and stands in present-day Yingxian, Shanxi. It stacks spaces for Buddhist worship vertically within a predominantly timber structure, with its overall height commonly given as just over sixty-seven meters. The tower, Buddhist sculptures, murals, and inscriptions from successive periods together preserve the temple’s history. Looking at the pagoda means examining both a tall building and the use of multistory architectural space in Liao-dynasty Buddhism.
The generally accepted construction date is the second year of the Liao Qingning reign, or 1056. Based mainly on later local accounts, this year is best treated as an approximate starting point. Initial Liao construction was followed by additions and repairs during the Jin dynasty and numerous subsequent restorations. What stands today is a building shaped by prolonged use, repair, and deformation. Repair inscriptions and components of different dates offer researchers clues for tracing successive phases of construction and maintenance.
Column Grids, Dougong Brackets, and Mortise-and-Tenon Joints
The flow of forces can be understood by tracing it downward from the eaves. The weight of the eaves and floors passes through beams, dougong brackets, and other members into the column frames and then down through successive levels to the foundations. Dougong assemblies comprise small supporting timber blocks and projecting bracket arms, creating a transition between column tops and beam frames while enabling the eaves to extend beyond the column line. Different positions must receive members approaching from different directions, so the pagoda contains a considerable variety of bracket combinations.
Beam ends join adjacent timbers through mortise-and-tenon connections, while horizontal ties and diagonal braces at each level allow separate columns to work together. Joints can undergo compression, rotation, or sliding, and their long-term behavior also depends on changes in contact surfaces and the timber itself. Wood responds differently to forces along and across the grain, and localized crushing can alter the positions of members above. The tower also contains metal components such as iron chains; “timber construction” describes its principal structural system.
Every dougong assembly transfers forces together with the surrounding beams and column frames. Local reinforcement changes joint stiffness and loading, so repair designs must consider the levels above and below and nearby components in order to understand how loads are distributed throughout the timber frame.
Spaces for Ascent and Buddhist Images
Stairways inside the pagoda allow people to enter worship spaces at different heights. The large Buddha on the lowest story requires a tall interior, while the upper stories organize their centers through differing arrangements of altar platforms and sculptures. Chen Mingda’s measured survey recorded arrangements including Buddhas of the four directions on the third story and Buddhas and bodhisattvas on the fourth. Together with the octagonal plan, column rings, railings and partitions, and passageways, these arrangements determine where viewers stand and the directions from which they look.
Chen also observed that the interior of the lowest story was dimmer, while the upper spaces were brighter; stepping out toward the perimeter offered views of the surrounding town and countryside. Moving from stairs to circumambulatory galleries, and from close views of Buddhist images to distant scenery, visitors’ lines of sight change with their level in the tower. Height thus serves structural, experiential, and religious purposes simultaneously. The sculptures have also undergone later repainting, regilding, and modeled repairs, so their present appearance must be interpreted alongside old photographs and early records.
Deformation, Monitoring, and Repair
The surviving pagoda exhibits leaning columns, deflected beams, compression damage to members, and overall displacement. Li Tieying and Qin Huimin’s research considers changes in timber properties alongside external forces, environmental conditions, and human effects, with attention to compression across the grain and differences in stiffness between stories. A stronger area beside a weaker one can concentrate deformation at their connections. The fact that the pagoda has stood for a long time cannot replace an assessment of this damage.
Field measurements published by Xue Jianyang and Zhang Yusen in 2019 compared coordinates at column tops and bases, beam deflections, and floor elevations. They found particularly pronounced inclinations in some columns on the second and third stories, as well as differences in the directions of displacement between levels. These findings represent a particular survey stage and should be compared continuously with subsequent monitoring. Conservation research uses earlier measured surveys, material testing, and ongoing observation to distinguish accumulated historical deformation from developing damage.
Repair must establish which original members can continue to carry loads, where support is needed, and how construction work will affect the interconnected timber frames above and below. Retaining historical materials as far as possible and controlling changes in loading caused by new interventions are essential if the tower’s technical information is to survive together with the building itself.