Mechanical, Electrical and Plumbing Shop Drawings

Mechanical, Electrical and Plumbing Shop Drawings

A shop drawing happens to be a drawing or handful of drawings generated by the builder, retailer, manufacturer or subcontractor. Shop drawings are usually essential for pre-fabricated elements which include elevators, windows, appliances, cabinets, air handling units, and millwork. Equally crucial are the shop drawings for installation as well as coordination of various MEP domains like HVAC, fire protection, electrical and plumbing. These drawings are not created by Architects or Engineers as a part of their contract with the owner. MEP Shop Drawings usually exhibit more information as compared to the construction documents. It is created in order to describe the manufacturing and installation of the items to the manufacturer’s production or contractor’s installation team. MEP shop drawing’s major focus is on the specific product or installation and excludes notation regarding other products and installations unless integration with the subject product is required. Details required to be incorporated into Shop Drawings are:

  • Comparison details for Architects and Engineers

MEP shop drawings ought to incorporate details for the Architect and Engineer to distinguish the specifications and drawings. These drawings must emphasize the appearance, functionality, and prescriptive details present in the construction drawings. MEP Shop Drawings are created comprehensively to enable Architects and Engineers to review the fabricator’s version of the product before its fabrication. Referrals to the construction documents, drawings, manufacturer’s material specifications, catalog cut-sheets and various other specifications help them in their evaluation of the shop drawings.

  • Annotation of changes or modifications from the construction documents:

Annotations pertaining to the changes or variations from the original documents must be laid down on MEP shop drawing for the Architect’s and Engineer’s validation. Eventually, they are the ones accountable for changes in these drawings and ought to have the opportunity to evaluate all modifications.

  • Details required to fabricate the product

Dimensions, manufacturing standards and manufacturing guidelines must be incorporated in MEP shop drawing. It must be apparent to the fabrication team what will be fabricated from the shop drawings alone. The construction documents are occasionally utilized as a reference in fabrication, with the fabricators counting on the shop drawing for any information.

  • An indication of dimensions requiring confirmation from the site

The majority of the site dimensions, like the dimensions between two surfaces on the site, ought to be validated. A dimension might be laid out on the construction drawings; however, the actual dimension can differ, from minuscule to large increments, based on site conditions. It is essential that the fabricated item arrives she site ready to be installed without field changes.

  • Placement or installation information

Few fabricators and manufacturers give symbols, details, or instructions regarding installation. This may incorporate a list of additional materials, like fasteners or adhesives, ideal but not included for the product. Various third-parties must review the installation details and validate that the equipment is compatible and the layout of the service is appropriate. For example, a commercial chiller provided by contractor requires electrical connections, plumbing, rigging, insulation and commissioning as well.

  • Computer-aided MEP Design Coordination

Issues with design coordination, like time consumption and ineffectiveness pertinent to the existing 2D paper-based procedure, are some of the major concerns as delayed conflict correction raises the risk on-site. To resolve this issue, coordination and clash detection procedures are performed to reduce field issues.

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