## 4 The Second Workshop: Structure and Contents of the STEW Guide
### The Contents of the BIM Service Tandering Guide (BTG)  
After getting the document review results from the PASC, the POs will be ready to select the proper supplier for a BIM project. The BTG is intended to guide the POs to issue the RFQ and the RFP with the OIRs to prospective BIM suppliers, choose a winning supplier who is expected to satisfy the OIRs via the project delivery method designated, and prepare contract documents. In the market place, while many public and private entities have talked about the BIM RFQ and RFP, there are very few samples of the RFQ and the RFP that the POs can conveniently adopt for their projects.  
The RFQ and the RFP should contain adequate BIM language for the POs to select a competent BIM supplier possessing the necessary skills. The RFQ is the first tool that the POs are supposed to have for determining the BIM experience of prospective suppliers. When analyzing the submitted RFQ, it is often helpful to use a scoring matrix [20]. Using a matrix enables the PO to organize the proposals into a quantifiable score that can be rapidly and easily ranked. Additionally, it is important to demand proof of qualifications, because many suppliers in the marketplace will exaggerate their expertise so as to win a contract. To filter out overstated qualifications, the POs can require the prospective suppliers to describe how they devise BIM uses, processes, information exchanges, and collaboration procedures, and to provide examples of BIM projects where they have previously implemented BIM applications.  
The RFP should be incorporated with the OIRs/EIRs and prepared in such a manner that a fair and certain contractual relationship is established by accurately specifying the BIM design scopes, design execution procedures, deliverables evaluation methods, and payment options. The RFP can provide the POs with a price and description of the proposed BIM uses to be performed by the suppliers. Just like the RFQ scoring matrix, the BIM proposal scoring matrix gives the POs the ability to grade the proposals on the basis of the BIM services of greatest importance, and to detect deficiencies in proposals before any contract is awarded [20]. To score the proposals precisely, the POs should provide a detailed description of the BIM services they expect to procure.  
The RFP needs to clearly demonstrate POs' intentions for a contract. There are several contract options developable from POs' perspective in conjunction with project delivery methods and BIM contract scope. For example, if the POs make a contract with the BIM supplier separately from the main architect who is responsible for the overall project design contract, it will be beneficial for the BTG to include diverse sample RFPs corresponding to the scenarios of the diverse contract formations, based on which the POs can develop their own RFP to fit their BIM requirements.  
In developing the RFP, the POs need to clearly address the step-by-step procedures of pre-contract and post-contract activities. At the tender stage, before a contract is agreed, prospective suppliers will develop the BEP, of which requirements have been specified in the RFP and OIRs/EIRs, with the aim of demonstrating their proposed approach, capability, and competency to meet the OIRs/EIRs. Once a contract has been awarded, the winning supplier should comprehensively further set out how the information requested in the OIRs/EIRs will be provided. The post-contract BEP document will therefore require far more effort from the supplier [51].