The MEP design and set up workflow includes quite a few stakeholders and events which might be collectively accountable for overseeing a collection of levels that can end result within the constructing engineering (or constructing companies) to be deliberate, designed, spatially coordinated, fabricated, put in, commissioned and maintained. Sometimes, the constructing companies design stage follows the preliminary architectural design, from which level it may possibly often be designed in parallel with additional architectural in addition to structural design modifications.
The engineering groups that usually design constructing companies options are often in considered one of two teams. The primary group is often the constructing designer, also referred to as the advisor engineer or the design engineer. It’s the function of the design engineer to work intently with the architect to develop the general constructing engineering components together with lighting, cooling, heating, drainage, waste, fireplace prevention and safety companies. Historically, the design engineer is not going to be concerned within the detailed spatial design of those companies. As a substitute the detailed spatial design and set up would usually be dealt with by the second occasion, often called the MEP contractor (M&E contractor) or commerce contractor. The MEP or commerce contractor is accountable for evolving the preliminary advisor design right into a workable and installation-ready constructing companies answer Rick Owens.
In some cases, there’s additionally a 3rd occasion concerned – the fabricator, who shall be accountable for creating MEP elements reminiscent of ductwork or pipework components or in some circumstances pre-fabricated options that include pipework, electrical ladder, plumbing, ductwork and sprinkler inside a body (module) that’s delivered to web site for set up in risers, plant rooms and corridors.
This text is anxious with the function of the MEP designer and MEP contractor, particularly, the main focus for this text is to debate how BIM (Constructing Data Modelling) has influenced the MEP design workflow between the designer and the contractor.
Present MEP BIM Workflow Choices
Primarily there are 5 completely different MEP design workflow situations that at present exist and these shall be mentioned within the article. They’re as follows
Conventional 2D design and 3D BIM coordination
3D MEP design and 3D BIM coordination
Designers 3D BIM design and coordination
Contractor 3D BIM design and coordination
Common contractor 3D mannequin coordination
Conventional 2D Design and 3D BIM Coordination
Contemplating the normal MEP method first, that is the place a advisor will create 2D design outputs, which embrace 2D plan layouts, 2D sections and MEP (M&E) schematics. This may point out the design intent for the constructing primarily based on the use specified by the architect. As soon as the advisor has accomplished this design data he’ll move on the knowledge to an MEP contractor who shall be accountable for creating the MEP coordinated answer. This text assumes that the contractor will create a spatially coordinated 3D BIM mannequin utilizing BIM instruments reminiscent of Revit MEP and Navisworks. The contractor will use the design data and create an installation-ready answer which takes under consideration set up, effectivity of pipe runs or duct bends, house for lagging and hanging the companies, entry for publish set up upkeep and so forth. This conventional MEP method, from a 2D design to a 3D mannequin has existed for the previous couple of many years and permits the contractor so as to add extra data into the mannequin that can be utilized by him and by services administration corporations after the set up. The usage of the 3D software reminiscent of Revit is after all helpful as it’s an clever mannequin, with parametric elements and subsequently, in addition to permitting the contractor to establish and resolve clashes earlier than any time is spent on web site, it has different makes use of and purposes the place mannequin ‘data’ is used and relied upon.
3D MEP Design and 3D BIM Coordination
The second workflow methodology is extra straight influenced by BIM. Because the MEP designer, one will use BIM instruments to create a 3D mannequin and related drawings throughout his preliminary design section (fairly than a 2D design) earlier than this data is handed throughout to an MEP commerce contractor. The MEP design engineer will usually create a 3D mannequin resulting from buyer specs and necessities for a BIM mannequin, as in lots of circumstances a federated mannequin (which mixes the opposite disciplines in a single mannequin) is required by the shopper for a weekly assessment and therefore the MEP advisor can’t merely present a set of 2D drawings. On this workflow, the BIM mannequin is successfully a 3D illustration of what would in any other case be a 2D deliverable. It is going to subsequently include areas the place additional modifications are nonetheless wanted by a commerce contractor. Such examples embrace the usage of library gadgets fairly than particular MEP commerce contractor procured components which may be used within the mannequin. The creation of a 3D BIM mannequin at this stage by the advisor can also be topic to a number of architectural and structural mannequin modifications. These have a knock-on impact on the MEP answer as it’s successfully a work-in-progress mannequin for MEP with fixed architectural and structural modifications and subsequently won’t ever have the identical degree of effectivity, by way of structure of companies, in comparison with an MEP mannequin the place the architectural and structural fashions are frozen. The draw back of this workflow methodology is after all the additional time taken to create a BIM mannequin by the advisor crew. Added to this challenge is the truth that 3D modelling experience and expertise inside a consulting engineering crew can typically be restricted. As soon as the advisor completes his mannequin and passes it to the MEP contractor, the choice as as to whether the contractor ought to adapt the mannequin or begin the modelling course of from the beginning is admittedly primarily based on the standard of the mannequin to begin with. In actuality each situations will exist, in some circumstances the MEP commerce contractor is healthier off beginning the BIM mannequin once more utilizing solely the 2D design drawings which might be created by the advisor from his BIM mannequin, whereas in some uncommon circumstances the commerce contractor will use the consultants MEP BIM mannequin and adapt and modify it along with his modifications, to make the mannequin prepared for set up. In each situations, the MEP contractor will all the time look to make worth engineering additions and modifications to the mannequin in addition to procurement led mannequin modifications.
Designers 3D BIM MEP Design and Coordination
The third MEP design workflow methodology is a extra pure and direct consequence of BIM and it really additionally begins to advertise the advantage of BIM extra considerably because it will get nearer to ‘digital design and building’ goals of the business. On this workflow the method of design engineer is to create a BIM mannequin that’s spatially coordinated and that’s utilizing the precise specified elements for the challenge. Sometimes, the advisor throughout this section can have an extended time frame to create the mannequin, permitting him to soak up the modifications from structural and architectural disciplines as they progress by way of the detailing levels. The truth that the mannequin is then coordinated with the construction and structure in addition to different MEP companies permits the advisor to create a mannequin that’s being created in accordance with an set up normal that’s now extra usable by an installer or fabricator. When the mannequin on this workflow methodology is handed on to a contractor, the contractor should want to make last modifications and changes in a spherical of worth engineering. Sometimes, the contractor will use the identical mannequin on this workflow and make modifications to the mannequin offered by the MEP design advisor. Moreover, it’s possible that the advisor engineer is not going to have offered invert (top) ranges or dimensions from gridlines and partitions for the MEP companies on his drawings. In such circumstances the contractor will subsequently need to create extra element within the drawings, however once more contractor may use the advisor’s drawings and progress them in additional element for his/her use.