29. 室内工程。室内工程范围包括石膏板、天花板系统和家具，是项目费用最大的细列项目之一。目前正在考虑多个备选室内布局设计，所需费用可能有差异。目前计划采用一个可能有助于推行灵活工作区安排的开放布局。这个风险的缓解方式包括：(a) 加速布局设计和积极主动地获得关键利益攸关方的认同；(b) 确定设计所依据的假设的潜在弱点，并在发出招标书之前对大楼进行详细调查，以尽量发现各种不明状况；(c) 邀请承包商参与评估和再评估设计和提出其他替代解决办法(价值工程)；及(d) 确保在设计和执行合同文件期间进行密切监测，以准备出现衍生费用。
29. Interior construction. Interior construction includes the scope for drywall, ceiling systems and furniture and is one of the largest project cost line items. Numerous alternatives are being considered for the interior layout, which may produce cost variances. The current plan is for an open layout that may help to facilitate flexible workspace arrangements. This risk can be mitigated by: (a) accelerating the design layout and proactively obtaining buy-in from key stakeholders; (b) identifying potential weaknesses of assumptions on which the design is based and performing detailed surveys of the building prior to sending out tenders to uncover as many unknown conditions as possible; (c) involving the contractor in the assessment and reassessment of designs and identifying alternative solutions (value engineering); and (d) ensuring close monitoring during the design and execution of contract documents to anticipate consequential costs.