## 1 Introduction
### Research Rationale  
In 2014, as stated above, the MOLIT enacted the ASIPA to enhance the design quality of public building projects, as well as to improve the professional manpower through redefining the existing architectural design tender process [3]. Based on the ASIPA, the POs--regardless of whether they are in central governments or local, provincial ones--if they are to build the facility whose design fee exceeds USD 200,000, are required to procure design works through a competitive designer selection process using a poster or oral presentation as design concepts, rather than simple bidding on a design fee. Figure 2 shows the BIM procurement process at each of the BIM development phases, in conjunction with the entities involved in the process. According to the ASIPA, before proceeding with the project procurement process, the POs should submit a formal document regarding their preliminary project feasibility analysis to the Public Architectural Support Center (PASC) led by the MOLIT (i.e., (1) in Figure 2). The document necessarily includes project scope, budget plans, design quality management plans including BIM scope and requirements, sustainability enhancement plans, project delivery methods to be applied--such as Design-Build (DB), Technical Proposal (TP), Design-Bid-Build (DBB), Construction Management (CM)--and so on [3]. The PASC then reviews the document in terms of the appropriateness and comprehensiveness of the items, and returns the review result to the POs. The POs necessarily reflect the review result in their final project procurement package for selecting both a contractor and a designer. The POs then invite designers and contractors to a competitive bid. The BIM invitation package essentially comprises a Request for Qualification (RFQ), a Request for Proposal (RFP), BIM scope and requirements, BIM Execution Plan (BEP) development guidelines,  
Figure 2: The BIM procurement process at different BIM development phases. and other reinforced documents by the PASC (i.e., (2) in Figure 2). The contents of the BIM invitation are, in general, a part of the whole bid invitation package for a project, and differ on the basis of the POs' BIM uses, as well as the project delivery method applied. Contractors and designers interested in the invitation package organize a project team including a BIM team, and prepare a BEP according to the POs' request (i.e., (3) in Figure 2). Once selecting the most appropriate contractor and designer, the POs are likely to revise the BEP submitted by the selected entity to meet their BIM intentions. The BEP clearly defines the BIM's deliverables, and these should be carried out and submitted to the POs (i.e., (4) in Figure 2) on the designated BIM schedules in the contract. The process described above includes step-by-step activities with diverse contents to address the POs' BIM intentions. The POs are expected to be competitive enough to prepare the activities well, to manage intermediate BIM outcomes produced during the procurement process, and to verify the final BIM deliverables as a whole. If the POs can understand the structured relationships within their BIM scope, the distinctions of each project delivery method, and the contractual processes and languages that are essential to meet the BIM scope, they should feel more comfortable in tailoring their own BIM guidelines that can be well fitted to their projects. The main objective of this study is to develop the STEW guide that supports the POs in understanding these. In addition, referring to the NCS enacted by the Korean Ministry of Employment and Labor (MEL) in 2014--which aims to standardize the knowledge bases and technology levels of various industries nationwide, and to systematically improve the manpower in each industry according to this standardization--BIM has been one of the designated disciplines in the architectural industry. There are four subcategories in this architectural discipline, i.e., BIM preparation, BIM management, BIM production, and BIM usage [9].