BIM in Russia: reconstruction of shopping center :MANEZH”, Tomsk.
Comments of CEO A. Semin from "SibTechProject" LLC:
“It is a well-known fact that fully-featured BIM- project development is rather rare in Russia.
Many know that BIN -project development is imported from machine-building industry, where it is used for publication of design documentation.
Only a few know that BIM- project development is rather effective in designing complex structures, such as shopping-recreational centers, as well as exceptionally rational in reconstruction of different constructions.
In March, 2013 we published design BIM- project development documentation for Tomsk Shopping Mall and Recreation Center “Emerald City”. Since that time we have looking for any construction site where we could fortify our experience and further investigate this method – BIM- project development.
Experiment! Consider the probability of this event! On April 15, 2013 I was at a meeting where a client wanted to develop design documentation via BIM- project development for the reconstruction of a shopping mall. I forgot.... this client was design-engineer.
We concluded a contract. Our target was to design the documentation package within the framework of Autodesk Revit, from architecture- construction to such sections as vertical transport, fire alarm and security alarm systems, ACS, automation and communications network. The work was more or less difficult due to the fact that it was not a new construction but reconstruction of an old shopping mall.“
Comments of Project Engineer R. Petrushkevich from "SibTechProject" LLC:
“Project documentation (stage P) of property reconstruction was presented to the Client in PDF format and permitting design for state expertise. However, no calculations for project documentation concept were presented. At this stage the contract Client only prepared technical specifications with requirements in planning, construction and engineering solutions which were not reflected in the project documentation.
We started by calculating each section of the project for feature development of engineering drawings. This was not a simple task! For example, the construction solution involved conducting the load summary again and then calculating existing structural scheme with specified proportioning of members to develop their reinforcement.
Planning engineering (utility) system involved creating space for arrangement of utility lines throughout the building. However, this was rather difficult.
It should be noted that plotting 3D image of arrangement of utility lines could practically be the only solution. Introduced laying lines of utility systems in proposed project documentation disregarded such facts as their intercrossing and the structural elements as capitals and beams occupied some ceiling space. At the same time, the clear ceiling height, the base where communications should not be lower, became the “stumbling stone” in applying the engineering solutions. Owing to the coordination of engineers, architects and design-engineers this complicated problem was solved. As a result the technical solutions for all utility systems were changed and approved. The other side of the coin is that newly adopted technical solutions involved different calculated loads for heating and electricity supply. This could improve energy efficiency of the building.
Special attention should reflect the planning of the project documentation. The Chief Project Engineer compiled Gantt chart of developed design engineering documentation album, taking into account the fact that the project would be conducted via BIM- project development. The work was divided into construction stages and stages of issuing targeted solutions for the constructing and reconstructing the building. Ultimately, project development of engineering drawing packages were completed to schedule, in spite of the fact that the deadlines were changed due to significant agreements with the Client. Project base-line was increased from 153 to 192 days.
It should be stated that 280kg of paper was used for the albums. Construction estimated cost was more than 1 billion rubles. “
Comments of Manager of Automation and Energy Supply Department, S. Mikhailin from "SibTechProject" LLC:
«The project was developed rather quickly in AutoCAD, however, applying Revit made it possible to plan exact cable network lines. 3D modeling enhanced more detailed planning of the construction site. For example, electric control rooms were located on the first and second floors, between them- staircase. The architects did not consider the fact that the cable network would be passing throughout the building. In this case, they had to redesign and recalculated the architecture engineering documentation.”
How did it start – Revit application
The work was based on the traditional design. Architects design a model in Revit. The architectural model is based on Client project documentation. In the next step the engineers and design- engineers get involved. The building architecture model is the foundation on which the constructed project mounts floor by floor, engineers include networks and facilities. Design engineers conduct structural calculations and architects make alignments. Further the architects download engineering project file to see where it is necessary to create openings, while design-engineers- consider the loads. This process is time-consuming and demanding.
Comments of Design-engineer I. Purgaleva from "SibTechProject" LLC:
“Structural calculations are conducted in software program SCADA, then structural reinforcement scheme and modeled reinforcement are fulfilled in Revit the design engineers. A large amount of work was performed as every single beam was designed individually.”
One of basic problems was effective coordination of architects, design-engineers and engineers- in this case, this includes BIM- project development where each item in the model should be realistic and practical. To plan the utility (engineering) networks it was necessary to create a family base for Revit. It should be stated that a few engineers don't understand the prospect of BIM- project development. Some equipment producers propose their own 3D model files . However, this is not Revit files and it's a waste of time, as additional time and energy should be spent on developing additional properties and model images. Thus, run-time libraries were established and structured for HV (Heating & Ventilation), WSS (Water Supply & Sewerage), EML (Electro-mechanical Solution &Lighting) and TWS (Telecommunication & Warning System) departments.
To create openings in walls and slabs for utility (engineering) networks the Company acquired 2 additional licenses Tools4Revit both for engineers and architects. As the work in planning utility (engineering) networks was conducted in 2 stages, the architects had design assignments for the openings in each of these stages. In the first stage the architect worked with full scale openings, while in the second stage, the program rejected these architectural openings. In this case, the architect had to manually find the intercrossing and create the opening. Of course, this program is far from perfect. For example, if there are two side-by-side vents intersecting the wall, then the program creates an opening which is inappropriate for the architect. This also has to be manually adjusted.
Issue of design documentation involves some difficulties. Print from Revit could be better. It's well-known that one can choose the tool and printer layout in AutoCAD, however, one should create miscellaneous settings in Revit. It was decided to export AutoCAD and print it. It was revealed that applied “filter” for isometric diagrams with pipes were exported without fittings and passings, i.e. part of the diagram disappeared. The same situation is with sections. In this case, we had to print in either PDF or via Revit with additional adjustments.
Designing in Revit is a very interesting and attractive process, especially for young specialists. Revit reflects how utility (engineering) networks are located, what equipment looks like, what interacts and intersects. There are many things that complicate and decelerate the development of BIM in Russia. Design engineer should spend extra time in creating one's own library, so he/she puts a blind eye to some things; some specification sections had to be fulfilled via Excel to save time.
We are learning, we are improving and expanding the existing software programs. Software program Autodesk Revit is not a universal remedy for designing and it may become a subject of criticism in prentice hands. If we turn back a year ago we executed many questions to our CAD suppliers reflecting the disadvantages. Today, the situation is visa versa- they are calling and we are answering their questions. Only significant and complicated projects animate development. Developing a project in Autodesk Revit results in the following: qualitative documentation for the General Designer, accumulation of huge experience of department interaction and staff improvement in BIM qualification. Client and General Designer should profoundly understand what and how to design. In time and with high experience one becomes conscious that everything can be done in a simple and rapid way.