The project brief was to support the existing structurally failing digester vessel cover whilst providing maintenance access walkways and platforms. The existing digester vessel was approximately 18m in diameter and 10m in height with an array of pipes and smaller vessels. The new steel structure is supported off of the existing concrete Vessel wall by approximately 1m long columns with beams spanning between the columns to create a grid of clear spanning steel. From this grid of steel we have suspended the walkways, access stairs, handrail and the main turnbuckle anchor points to support the existing vessel cover.