Estimations
Conceptual Modeling
A conceptual model is a representation of a system, made of the composition of concepts which are used to help people know, understand, or simulate a subject the model represents.
A conceptual model, when implemented properly, should satisfy four fundamental objectives.
- Enhance an individual's understanding of the representative system
- Facilitate efficient conveyance of system details between stakeholders
- Provide a point of reference for system designers to extract system specifications
- Document the system for future reference and provide a means for collaboration
Cost Planning
Elemental cost planning is a system of Cost planning and Cost control, typically for buildings, which enables the cost of a scheme to be monitored during design development.
Cost Planning starts with the proposal.
The Cost Section may include:
- Labor
- Materials
- Subcontractors & Consultants (if used)
- Equipment & Facilities Rental
- Travel
- Contingencies
Quantity/Material Takeoffs
BIM models can be used to accurately generate quantity takeoffs and assist in the creation of cost estimates throughout the lifecycle of a project. Using BIM models in this manner enables the project team to see the cost effects of their design decisions and proposed changes during all phases of the project, and this feedback supports better design decision-making and can help curb excessive budget overruns due to project modifications.
Quantity takeoffs from a BIM model enable project teams to quickly generate cost estimates to assist in decision-making and provide cost information about alternatives to owners early in the design phase and throughout the project lifecycle. The BIM model is integrated with cost information from an estimating database, and this approach has proven to be quicker (some leading firms report a savings of nearly 80 percent of the time compared to traditional estimating) and reduces the possibility for errors and omissions. It can also reduce quantity takeoff time and allow estimators to focus on higher value activities, such as identifying construction assemblies, generating pricing, and factoring risks.
Our BIM Model generates the following Elements:
- Structural Elements - Concrete,Steel,Rebar,CMU Walls etc.
- Architectural Elements - Block Work, Ceiling, Doors & Windows, Railings, Finishes etc.
- MEP Elements - Ducts, Pipes & Fittings, Accessories, Equipments, Cable Trays, Hangers etc.
Material Takeoffs
schedules list the sub-components or materials of any Revit family. Material takeoff schedules have all the functionality and characteristics of other schedule views, but they allow you to show more detail about the assembly of a component. Any material that is placed in a component within Revit can be scheduled.
Digital Pre Fabrication Modeling
GRMC provides Digital Prefabrication and helps clients to get real-time examination of every system, making up the final project.
By having all the prefabricators’ information in the BIM model from the beginning of the building cycle there will be a reduction in costs and errors, improving efficiency.
Prefabrication makes objects easier to produce and assemble; it can be done in less time, so it is less expensive. As a result of the simplicity, the number of errors is reduced as the quality improves.
If we are using prefabrication combined with BIM, it is especially important that prefabricators take part of the designing process from the first stages of the project. If we do so, the saved time will be huge. When prefabricators are not involved in the process from the first stages (where architects’ decisions are taken), some information will not be accessible for them, creating inefficiencies.
But at this moment it is a common practice not giving the proper consideration to the activities involved in the next phases. To solve this problem, prefabricators should include all the digital information of their products during the early stages.
And it is here where most work should be done, making possible the availability of prefabricated components in digital format, so they could be used in the design, the offsite construction and the maintenance stage.
By having the manufacturers’ digital models of the components included in permanent libraries, the time saved increases hugely. For that purpose, BIM has a core database which helps to coordinate between the different agents involved in the process: designers, architects, suppliers and engineers.
BIM includes all the geometric information about the different parts of the building, but it also allows introducing ones such as cost, thermal values, resistance or acoustics. That is the interesting feature of BIM, because it can be used by many sectors involved in the development.
We can say that the most effective use of BIM models was for design coordination and walk-through animation. The greatest challenge of using BIM in construction projects is the implementation of the process itself, because development of BIM process requires huge knowledge of construction methods and processes.
Benefits
Use of design model as basis for fabricated components: If the design model is transferred to a BIM fabrication tool, it will contain an accurate representation of the building objects for fabrication and construction.
- Quick reaction to design changes
- Synchronization of design and construction planning
- Better implementation of lean construction techniques
Tender Support
During bidding Architects, Engineers and Contractors face the challenges of visualization, quantity and cost estimation. Our Tender Support and Tender Packages will help you in:
- Developing a model from the tender documents / drawings
- Provide you an near accurate quantity and cost estimation
