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Submittals in construction management there are shop drawings, material data, samples, and product data. Submittals are required primarily for the architect and engineer to verify that the correct products and quantities will be installed on the project. This process also gives the architect and sub-consultants the opportunity to select colors, patterns, and types of material that were not chosen prior to completion of the construction drawings. This is not an occasion for the architect to select different materials than specified, but rather to clarify the selection within the quality level indicated in the specification and quantities shown on plans. For materials requiring fabrication, such as reinforcing steel and structural steel, the architect and engineer need to verify details furnished by the fabricator as well as the required quantities are met. The details from the fabricator reflect both material availability and production expediency. One tragic example of a submitted alternate design is the suspension rod and bolting details resulting in the Hyatt Regency walkway collapse. The steel fabricator was unable to produce lengths of steel as originally designed and proposed using shorter lengths. The proposed alternate compounded the loads on the bolts, which resulted in the skywalks collapsing on July 17, 1981. 114 people were killed. The contractor also uses this information in installation, using dimensions and installation data from the submittal. The construction documents, specifically the technical specifications, require the contractor to submit product data, samples, and shop drawings to the architect and engineer for approval. This is one of the first steps that is taken by the contractor after execution of the construction contract and issuance of the "Notice to Proceed". The submittal process affects cost, quality, schedule, and project success. On large, commercial projects the submittal process can involve thousands of different materials, fabrications and equipment. Commercial buildings will often have complex pre-fabricated components. These include: elevators, windows, cabinets, air handling units, generators, appliances and cooling towers. These pieces of equipment often require close coordination to ensure that they receive the correct power, fuel, water and structural support. The submittal process gives another level of detail usually not included as part of the design documents. An "approved" submittal authorizes quantity and quality of a material or an assembly to be released for fabrication and shipment. It ensures that the submittals have been properly vetted before final ordering. In essence, this is the final quality control mechanism before a product arrives on-site. ==Types of Submittals== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Submittals (construction)」の詳細全文を読む スポンサード リンク
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