BIM Services

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BIM services

An arguable technological breakthrough in the construction field, BIM or Building Information Modeling is continuously emerging as the most feasible and reliable option available in the building construction industry. With the advent of BIM — building design, construction and management has become an easier and cost effective task than ever before.

BIM (Building Information Modelling) is the creation of parametric, or intelligent models instead of 2D perspective ‘un-intelligent’ drawings. A BIM operates on a digital database and any change made to this database is reflected throughout the entire drawing. This allows everyone involved in the building lifecycle – architects, engineers, contractors, developers, and building owners - to sync together allowing them to view the model in different ways and seamlessly share information. 

Building Information Modeling (BIM) is a digital representation of physical and functional characteristics of a building.

The various benefits of BIM services are:

    » Enhanced visualization
    » Higher productivity enabled by easy retrieval of information
    » Better coordination of construction documents (CD set)
    » Effective sharing of information , value-addition & reuse
    » Embedment and linking of vital information such as information of vendors, specific component materials, details and quantities required for estimation and tender
    » Improved delivery
    » Reduction in costs
    » Automation of assembly – digital product data may be used in downstream processes and for be utilized for manufacturing/assembling structural systems
    » Improved customer service – by a better understanding caused by accurate visualization.
    » Improved Facility management by utilization of building Lifecycle data – requirements, design, construction and operational

    The usage of BIM extends beyond the planning and design phase of the project, beyond the building life cycle. It improves all related processes too including cost management, construction management, project management and facility management. BIM provides the potential for a virtual information model to be handed from Design Team (architects, surveyors, consulting engineers, and others) to Contractor and Subcontractors and then to the Owner, each adding their own additional discipline-specific knowledge and tracking of changes to the single model. The result greatly reduces the information loss that occurs when a new team takes "ownership" of the project as well as in delivering extensive information to owners of complex structures far beyond that which they are currently accustomed to having.

    BIM produces construction documents that resemble those created by 2D CAD Drafting, but are done much faster and contain information about structure, quantities, materials and other data that can be used in both — the construction and management of a building. Using BIM, designers can analyze the building design in detail and locate human errors, if any. The basic difference between 3D CAD model and a BIM is that, 3D CAD model is  to people VISUALIZE how a building will look, while BIM provides detailed & comprehensive information about how the functioning of a  building.

    BIM can greatly decrease errors made by design team members as well as the construction team (Contractors and Subcontractors) by allowing the use of conflict detection where the computer actually informs team members about parts of the building in conflict or clashing, and through detailed computer visualization of each part in relation to the total building. As computers and software become more capable of handling more building information, this will become even more pronounced than it is in current design and construction projects. This error reduction is a great part of cost savings realized by all members of a project. Reduction in time required to complete construction directly contributes to the cost savings numbers as well. It's important to realize that this decrease can only be accomplished if the models are sufficiently developed in the Design Development phase.

    BIM also provides adequate information for building performance analysis and evaluation, which is of vital importance for sustainable building design. BIM provides accurate and extremely reliable information about the building, the structure, the materials used, etc. including green aspects such as energy efficiency and day lighting..


    The various stages for BIM services are:

    » Conceptual or schematic design
    » Preliminary design
    » Design development
    » Construction documents and details

    Each of these design phases has a specific focus and they can be briefed as below.


    Conceptual or Schematic Design

    The conceptual design stage typically commences with a program statement or flowchart that itemizes the list of required criteria that must be fulfilled by the design. Using this program statement as a guide, the design team typically develops and evaluates several rough concepts for the overall shape, massing, orientation, and positioning of the building on the project site.

    In developing these design concepts, various criteria that bind the potential building envelope must be taken into account. These often include site setbacks, floor area or building footprint limitations, daylight plane and shading restrictions, and other requirements imposed by local authorities and approval agencies.

    Matching the client requests and requirements and the site constraints can be a tricky task. Abstract concepts of the overall building shape and placement will be developed and evaluated, often with bare minimum details about the precise features of the building envelope or the configuration of the interiors. In order to manage the design problem systematically, this top-down approach focuses on making the important decisions initially, saving more detailed design decisions for a subsequent phase.

    Using the versatility of BIM tools, many aspects of these conceptual designs can be evaluated at a very  early stage. For example, building performance analysis can be performed to evaluate the potential energy use of various building shapes and orientations. Design teams can use this early feedback to help guide their recommendations about the best alternative to choose from.

    The conceptual design options will be evaluated and presented to the clients, and once a consented option is selected and approved, the process can move on to the next stage.

    Preliminary Design

    Once the overall shape and form of the building envelope are established, the design teams often focus on area and space planning—allocation of available space within the building envelope to the various program needs and considering various layouts for how these spaces might be best organized or utilized.

    Typical articulation of features of the building envelope, proposing the exterior wall materials and assemblies, preliminary window placements, day lighting and shading features, and the roof form will happen in the initial stage of design. Preliminary room layouts are also be created to develop the scheme for the interior spaces that will be used.

    As and when information about the proposed design is refined and improvised to the building model, analysis of the proposed design can continue to guide the design. For example, during the initial design phase, cost estimates are often developed based on the quantities and materials mentioned in the model. These estimates provide valuable feedback that helps design teams evaluate the impact of potential design decisions and ultimately make better decisions.

    Design Development

    The ideas and design features approved during the preliminary design phase are developed and explored in more detail during the design development phase.

    For instance, once the approval for room layouts have been procured, a wide variety of interior details and finishes can be added to fill out the design. Design alternatives for casework options and fixture placement can be taken into account. Evaluation of special architectural treatments for interior walls or ceilings can be executed. Though these features could have been added during an earlier phase, it makes more clarity and reduces the likelihood of wasted work to add them after the preliminary design phase.

    Evaluation of design options is also part of design development phase. This involves identifying key features where the design develops and explores several alternate approaches. The versatility of the BIM modeling process allows the design teams to develop alternate design ideas and evaluate them in the context of the overall proposed design. Teams will have greater latitude to test new ideas and find better solutions by making it easy to consider design options.

    Analysis of the building model can continue at greater detail during the design development phase. Cost estimates may be updated and refined. Various analysis tools can be used on the building model to help  teams in producing preliminary designs for the structural and building systems (mechanical, electrical, and plumbing systems), and the impacts and interactions with these systems can be evaluated and utilized for improving the design proposed by the team.

    Construction Documents and Details

    The construction documentation and detailing phase emphasizes on adding information to the building model for a comprehensive description of the proposed design through drawings and details that can be used to assist in the construction process.

    A comprehensive documentation of the proposed design at the level of detail required to guide the construction process can be an immensely difficult task. The documentation should cover every feature of the building assemblies, the connection details, and the components that will be installed and they be presented on sheets for distribution to the project delivery team.

    There are several ways for BIM tools to be utilized during this phase of the design process. A model of the building with an overall framework for generating the details must be created.  Views of the building model can be created that becomes the base for details rather than drawing each detail from scratch as a series of lines. Annotations and notes are added to completely explain these details, but the building model acts as a valuable starting point and serves as a consistency check. As the model views are live, changes to the building model are automatically reflected in the derived details.

    The output of the construction document phase is typically a set of printed plan sheets. The building model can be shared with the project delivery team to enable automated quantity takeoffs as well as for solving conflicts and interference checking in the drawing. This effectual BIM design application process mandates new approaches to organize project teams, share risk and Integrated Project Delivery.


    Integrated project delivery ( IPD) is a revolutionary way to excel your construction management by minimizing wastage, reducing costs and improving productivity. The main goal of the Integrated Project Delivery main goal is to create a team effort in bringing together the owner, architects, engineers, managers and subcontractors on the same platform. The Integrated Project Delivery creates an unique bond from day one of the planning stages and binds all key players for the project development.

    A comparison of traditional delivery methods vs. Integrated Project Delivery (IPD) methods

    BIM Planning

    The various BIM supporting softwares are :

    Product Name


    Primary Function

    Cadpipe HVAC

    AEC Design Group

    3D HVAC Modeling

    Revit Architecture


    3D Architectural Modeling and parametric design.

    AutoCAD Architecture


    3D Architectural Modeling and parametric design.

    Revit Structure


    3D Structural Modeling and parametric design.

    Revit MEP


    3D Detailed MEP Modeling

    AutoCAD MEP


    3D MEP Modeling

    AutoCAD Civil 3D


    Site Development


    Beck Technology

    3D conceptual modeling wi

    Bentley BIM Suite (MicroStation, Bentley Architecture, Structural, Mechanical, Electrical, Generative Design)

    Bentley Systems

    3D Architectural, Structural, Mechanical, Electrical, and Generative Components Modeling


    CSC (UK)

    3D Structural Modeling


    Design Data

    3D Detailed Structural Modeling

    Fabrication for AutoCAD MEP

    East Coast CAD/CAM

    3D Detailed MEP Modeling

    Digital Project

    Gehry Technologies

    CATIA based BIM System for Architectural, Design, Engineering, and Construction Modeling

    Digital Project MEP Systems Routing

    Gehry Technologies

    MEP Design



    3D Architectural Modeling

    MEP Modeler


    3D MEP Modeling



    3D Fire Sprinkler Design and Modeling


    Mc4 Software

    Fire Piping Network Design and Modeling


    Micro Application

    3D Detailed MEP Modeling

    Vectorworks Designer


    3D Architectural Modeling



    Full suite of 2D and 3D Structural Design Applications

    Tekla Structures


    3D Detailed Structural Modeling

    Vico Office

    Vico Software

    5D Modeling which can be used to generate cost and schedule data


    Bentley Systems

    Site Development

    Site Design, Site Planning

    Eagle Point

    Site Development




    The innovation of BIM started with architects, and many still see its value emerging from its use in the design phases. It is generally agreed that architects experience a high level of value along with many contractors (43%) and owners (41%), say.

    Structural Engineers
    It is generally accepted that structural engineers can extract high level of value from BIM. Elements such elements as steel columns, beams and trusses are frequently modeled by users. Contractors are the most likely (47%) parties to see structural engineers realizing significant benefits.

    Construction Managers and General Contractors
    Cost factor is an important criterion during construction. Budgets may be minimized considerably by reducing rework. Owners are the most likely (57%) parties to see a Construction Managers or General Contractor gaining highly on a project, most likely because the cost savings can be passed on.

    As BIM resolves conflicts and builds confidence in building plans, many team members eye opportunities for value addition in fabrication. Wastage may be minimized by accurate fabrication of materials and time may be saved during the pre-assembly. Contractors (56%) are most likely to witness fabricators experiencing a higher value than architects (23%), engineers (38%) or owners (30%).

    MEP Engineers
    MEP engineers have ample instances to use BIM. Modeling of extensive elements such as duct systems and air handlers are feasible options, while smaller elements such as electrical switches and outlets might prove may be difficult. Unfortunately, a very few engineers (22%) collectively see MEP engineers enjoy high value. Nearly half of contractors (45%) believe MEP engineers see significant value.

    Owners are the parties who ultimately enjoy all values collectively gained on a project. More than half (52%) of owners say they experience high value, but less than 30% of all other users believed this. The reason could be that other team members realize that owners are yet to see much value from BIM being used in operations and maintenance. Still, most owners believe they can tap the value of BIM during design and construction.

    Specialty Contractors
    Specialty sub-contractors may be assigned for executing some of the specific complexities of a project, but a few team members (23%) believe they are experiencing a high value from BIM. Generally, specialty  subcontractors are smaller firms compared to general contractors and the costs of adopting BIM would not be practical. As BIM users utilize a variety of software applications, specialty  subcontractors may face inter-operability issues and may incur added expenses to work within various models.

    Building Product Manufacturers
    A very few (11%) of building team members witness building product manufacturers gaining high value from BIM. This could impact team members’ belief that BPM's are not supplying sufficient BIM-related information yet.


    LOD stands for level of detailing/development. There are  5 different levels which has been classified by the American institute of architects(AIA)  in BIM Protocol (E202)

    To simplify, the 5 different levels of LOD in industry’s interpretation are listed below:

    » LOD 100 Conceptual modelling
    » LOD 200 General modelling
    » LOD 300 Accurate modelling & shop drawings
    » LOD 400 Fabrication & Assembly

    » LOD 500 Maintenance & Operations


    Model Content Requirements
    Overall building mass indicative of area, height, volume, location and orientation may be modeled in three dimensions or represented by other data.
    Authorized Uses
    Analysis- The Model may be analyzed based on volume, area and orientation by application of generalized performance criteria assigned to the representative model elements.
    Cost Estimation
    The model may be used to develop cost estimates based on current area, volume or similar conceptual estimating techniques (e.g., square feet of floor area, condominium unit, hospital bed, etc.)
     The model may be used for project phase scheduling and overall duration.

    LOD 200

    Model Content Requirements
     Model Elements are modeled as generalized systems or assemblies with approximate quantities, size, shape, location, and orientation. Non-geometric information can also be attached to the model elements.
    Authorized Uses
    Analysis- The Model can be analyzed for performance of selected systems by application of generalized performance criteria assigned to the corresponding model elements.
    Cost Estimating
    The Model can be used to develop a cost estimate based on the approximate data furnished and conceptual estimating techniques (e.g., volume and quantity of elements or type of
    System selected).
    The Model may be used to show ordered, time-scaled appearance of major elements and systems.

    LOD 300

    Model Content Requirements
    Model elements are modeled as specific assemblies and are precise in quantity, size, shape, location, and orientation. Non-geometric information can also be attached to model elements.
    Authorized Uses
    Construction- Suitable for the derivation of traditional construction documents and shop drawings.
    Analysis- The Model may be analyzed for performance of selected systems by applying specific performance criteria assigned to the corresponding Model Elements.
    Cost Estimation
    The Model may be used to develop a cost estimate based on the specific data provided and conceptual estimation techniques.
    The Model may be used to show an orderly, time-scaled appearance of detailed elements and systems.

    LOD 400

    Model Content Requirements

    Model elements are modeled as specific assemblies that are precise in size, shape, location, quantity, and orientation with complete fabrication, assembly, and detailing information. Non-geometric information can also be attached to model elements.
    Authorized Uses
    Construction- Model elements are considered as virtual representations of the proposed element and are suitable for construction.
    Analysis-The Model can be analyzed for performance of approved selected systems based on specific model elements.
    Cost Estimation
    Costs are based on the actual cost of specific components during procurement.
    The Model can be used to show an orderly, time-scaled appearance of detailed specific elements and systems including construction means and methods.

    LOD 500

    Model Content Requirements
    Model Elements are modeled as constructed assemblies which are actual and accurate in size, shape, location, quantity, and orientation. Non-geometric information can also be attached to modeled elements.
    Authorized Uses
    General Usage-The model can be used to maintain, alter and add to the project, but only to the extent consistent with any licenses granted in the Agreement or as specified in a separate licensing agreement.

    With the construction industry facing recessions, intelligent players are adopting BIM to provide them with a competitive advantage over their counterparts. Most of the organizations using BIM normally have a positive feedback about its effect on their business. BIM is being currently employed by professionals on all building types from the simplest warehouse to many of the most complex new buildings.

    The Industry Foundation Classes (IFC/ifcXML) are an open specification for Building Information Modeling and are used to share and exchange BIM in a neutral format among various software applications. GBxml is an emerging schema, a subset of the Building Information Modeling efforts, focused on green building design and operation.
    Although there are many difficulties, two of the main hurdles in adopting BIM technology are training and costs.

    Training: Receiving adequate training is the greatest challenge to adopting BIM. This could be particularly difficult because only a limited number of users might be having an expert background that could be used as a training resource.

    Costs: Cost of software and required hardware upgrades also form significant hurdles in the adoption of BIM technology.

    BIM Services

    Considering the advantages of adopting BIM technology, handling the work in-house would most probably nullify the advantages due to the involvement of training time & costs, hardware upgrade costs, software costs, etc.
    Hence, BIM adopters are finding outsourcing BIM work, to countries like India, more advantageous than handling the work in-house.

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