Monthly: January 2021

architecture engineering firm
Structural Engineering Services

What Does a Structural Engineer Do?

structural Engineer

Construction structures like Empire State Building in New York City, White House in Washington, Washington National Cathedral and Jefferson Memorial, Washington are some of the instances of varied historical structures of the earlier days to modern time. The credit of building these structures goes to the top structural engineer consultants, who push their structures to a higher level for construction, operational efficiency, sustainability and energy usage. Structural engineering firms create efficient designs, reducing construction wastage and streamlining construction documentation through BIM (Building Information Modeling).

What is structural engineering?

What is structural engineering

Structural engineering constitutes to be a sub-discipline of civil engineering wherein structural engineers are skilled to design the bones and muscles of the building structure. This creates the form as well as the shape of man-made structures. Several structural engineering consultants of design build firms use a wide array of relatively simple concepts for building complex structures. Top structural engineer in Maryland efficiently work with load calculations, comprising wind load, snow load, foundation design, retaining wall, beams, columns, roofs, slabs and more for RCC structure, concrete and wood structures. Structural drafters and BIM structural engineer develop information rich intelligent BIM 3D models for extracting design and information related to construction management. Structural engineer inpections are aligned for enhancing the construction efficacy and keeping project stakeholder informed about the design decisions taken. AEC professionals are outsourcing design build services for construction projects for saving time and costs.

What are the design deliverables from residential structural engineers?

  • Structural sheet metal product design
  • Structural analysis for various loads
  • Retaining wall, slab, frame & lintel design drawings
  • Stacks, steel angle & channel & plant structure designs

How structural engineering firms support design build work?

Structural engineering firms develop competent 3D structural detailing plans for assisting contractors, EPC (Engineering, Procurement and Construction) firms and steel fabricators to construct facilities. They support sheet metal fabricators as well as plant owners  to develop 2D drafting and 3D modeling services for elements such as glazing, cladding and the enclosures. BIM designers and steel detailers provide steel detailing and rebar detailing plans for various angular sections, trusses, roofs, columns, foundation and other crucial building components. Their expertise with comprehensive structural design and 3D modeling in Revit help to deliver flawless design build solutions. Structural design build services consist of structural drafting, 3D model creation, load calculation, foundation and roof designs. The components encompass plates, arches, shells, etc.  The design build support solutions are extended towards bridges, dams, power plants, hospitals, educational institutions, tunnels and port.

1. Structural Drafting Services

Competent structural drafters produce Revit 2d drafting and 3D drawings for steel, pre-cast and prefabricated structures, as well as pre-stressed components. The drafters provide comprehensive structural steel drafting for residential structural engineers, architects, engineering firms, contractors and steel detailers. The services allow collaboration, facilitating engineers to execute modular construction and enhancing site safety. Whether’s it’s design development and coordination, schematic structural design, or shop drawing creation, structural engineers support clients throughout project lifecycle.

Structural drafting services encompass:

  • Member schedule creation
  • Drafting of connection details
  • Sheet layouts
  • Design review with structural engineers
  • Space analysis
  • Structural drawing creation from design & sketches
  • Clash detection & coordination
  • Resolving RFIs
  • Architectural model placement
  • 3d IFC model creation for validation from architects
  • Standard checking for precast panels, including lifting, panel breaks, etc.

2. Structural Steel Detailing Services

structural steel detailing

Structural steel  detailing team consults with contractors, structural firms and fabricators to create structural steel detailing services for buildings, industrial plants, steel structures and steel framing. Top structural consultants provide steel detailing, rebar drawings along with shop drawings for collaborating amongst structural engineers, architects, fabricators and other AEC project stakeholders.  Expert steel detailers create steel detailing drawings to support structural erection for educational institutions and infrastructural facilities.

Structural steel detailing services include:

  • Steel detailing for beam, column, deck, fence & industry piping
  • Gravity module calculation, Bill of Materials/Quantity Takeoff
  • Post-tension, concrete-steel detailing, precast & prefabrication joint detailing
  • Metal roofs, canopy & pipe rack detailing
  • Bar joists design drawings

3. Structural drawings

Structural engineering consultants have proficiency in drafting shop drawings and fabrication drawings for sheet metal as well as woodwork shop drawings. Working in collaboration with fabricators facilitates in maintaining tight construction schedules and extensive material lead times.  Structural steel detailing experts produce a wide array of structural shop drawings for steel components, pre-cast, reinforcement concrete, etc.

Steel shop drawings include:

  • Cabinet & Handrail Shop Drawing
  • Erection, Fabrication & Millwork Drawings
  • BOQ for steel shop drawings
  • Precast, Rebar & Sheet metal shop drawings
  • Connection steel detailing

4. Rebar Detailing Services

Competent 3D rebar detailers produce reinforcement 3d models for structural engineering projects. The information rich rebar documentation facilitates a wide array of industry verticals including educational institutions, residential buildings, commercial complexes, infrastructural facilities and many more. Information gets easily exchanged amongst various project stakeholders, leading to substantial cost savings.

Rebar detailing services include:

  • Rebar 3d modeling
  • Rebar Shop Drawings & Detailing (Roof truss, joints)
  • Bar Bending Schedule (BBS)
  • Concrete masonry & wall detailing
  • Quantity takeoffs & Cost Estimation
  • As-built drawings

Through analysis of Revit structure services, structural engineers in Maryland benefit from structural analysis model improvement and get support for structural aspect. Tejjy Inc. specializes in providing Revit BIM services that enable models to develop quickly, leadIng to improved construction models. The structural engineering consultants undertake projects for creating Revit family components like beams, columns, retaining walls, foundation, joints, trusses, etc. to easily reproduce them, saving valuable project time. Consult expert structural engineers, drafters & BIM modelers of Tejjy Inc. for getting quick turnaround of Revit structural services. Consult Tejjy Inc. BIM consultants at 202-465-4830 or


Design Build VS Design Bid Build
Architectural Services

Design Build VS Design Bid Build

Design build VS Design bid build

There are various modes of Construction that are being used by the Design Build construction companies in the AEC industry. But the top two methods which have captured the market are Design bid Build and Design-Build. While it seems there is only word of difference but the design process and planning involved with each method vary tremendously.

What is Design Bid Build?

Since inception of construction industry design-build firms have been adopting design-bid-build methodology for building designs. That’s the reason design-bid-build is also referred as traditional project delivery method or design-tender or hardbid. Being simplest technique used for building construction, it encapsulates three stages. Design phase, bidding/tender phase , construction phase. 

Architects in coordination with owner understands client requirement and create schematic design. During design phase, construction drawings and bid documents are prepared. Construction drawings involve the coordination of architect with structural engineer, MEP engineer, civil engineer. Finally, Bid documents are prepared in design phase are used by general contractor for bidding phase. 

General contractors further involves subcontractors for bidding on sub components under bidding/tender phase. Subcomponents include structural steel frame, electrical, HVAC, plumbing and many more. The bidding price includes bills of quantities or quantity takeoff in construction project. 

After the bid is allotted entire building design is executed in construction phase . Building designs require permit approval. The responsibility of architect in construction phase is to monitor the progress of building projects.

What is Design-Build Service in Construction Management?

design-build method of construction

The design-build service in Construction Management is also known as the Integrated Project Delivery. It is the method in which the project is being contracted by the design-builder and is subdivided into architect-led-design and contractor-led-design. In this, the design-build contractor is wholesale responsible for all project works as well as legal remedies. A design-build firm collaborates with various subcontractors, design consultants as per the need of the project to deliver a quality project on time within budget.D/B approach is being compared to the master-builder approach which reduces risks and overall cost of the project. 

Impact of Design/Build services on Building Designs

Even though hardbid and D/B methods would result only in excellent building design . Still, the key differences between the two methodologies would help you to decide and choose the best method construction technique for your project.  The Pros and Cons of Design-build and Design-bid-build are discussed below.

Advantages of Design-Build in Construction Management:

  1. Reduced Risk

As the building design and construction both are performed by a single team it reduces the risk involved in construction. In this method team due to teamwork, the construction team give their input throughout the design process on the other hand the design team is available to solve any issues arising at the time of construction

2. Shorter Timeline

As both the design and construction team works collaboratively to achieve a common goal there is no timeline gap between the two phases of building construction. Work is completed out seamlessly in a very efficient and effective manner

3. Budget-Friendly 

Earlier the design-build method of construction can be easily formulated as per the owner’s budget and needs. The design-build firm selected or the manager who is responsible for the whole project formulate the team members as per the budget of the project owner 

Design-Build Disadvantages 

  1. Higher Price 

As there is no bidding process involved the owner can not select the d/b firm as per their own price. Hence the price tends to be higher in this. Additionally, no Design-build firm began their work unless and until they are under contract thus making it tough for the owner to compare.

  1. Creativity 

The design-build firms have various 3D models that they tweak and use as per the Building owner’s request. The owner doesn’t have a choice of a personalized design when considering the Design-build method of Construction

  1. Less owner Involvement 

There is very little or no involvement of the owner with the team members being selected for project completion. Earlier every design-build guarantee of the owner involvement but once  construction process get started at its full pace the owner is being consulted only on as need basis and major decision are being made by the commercial design-Build firm or the project manager

Designer-Bid-Build Advantages 

  1. Cost can be managed

As designer and contractor are hired separately, the owner has to control the project pricing. The designer for home building design is being selected as per the price range of the owner. The owner has complete control over the project from start to finish in the Design Bid build method of construction

2. Better Project Clarity 

 In the Design Bid Build method of construction, the project needs to completed in a certain period of timeline. Hence there is no overlapping of the phases and it becomes easier to find out where the project is going at every phase. Thus giving you a better project clarity 

3. More Control

Both the design bid build as well as design-build rely entirely on the input from the owner but the difference is design bid build gives you more control and thus gives you the freedom to make changes on the design-build model as per your need at any time of the Project 

Designer Bid Build Disadvantages 

  1. Increase in Cost 

In Design bid build the designer and contractor are not working in tandem and that’s the reason there is an increase in complications during the time of project execution. Whether it is the design aspect or documentation at every phase some or other issues arises which leads to an increase in the cost of making the project.

2. Time taking 

Since the designer as well as the builder both need to be appointed at various time intervals thus by default it takes time. The timeline gets exceed further if any complication arises in the middle of the project and both are finger pointing each other. Thus leading to project stoppage or extra time for complete project completion

3. Communication Issues

As the builder is not involved in the designing process there is a surety of miscommunication between the designer and the builder. This no involvement of the contractor at the earlier stage would lead to various issues being found at the later stage which need to be identified and work on earlier only. Thus there is a lack of communication which overall effect the quality of the project 

Difference between Design-Build and Design-Bid-Build

The basic difference to begin the journey is that design-bid-build process is traditional construction technique incomparison to design build process. The traditional talks about having a contractor and a designer whereas the other overlaps designing phase and construction phase emphasizing on single entity role termed as design-builder or design-build-contractor. Whereas the debate on design-build and design-bid-build is still on-going. A set of critics believe that architect/designer plays a pivotal role in the early design drawing phase. They support by stating that a contractor and architect has different perspectives about construction drawings. Design-build supporting critics answer back by stating ” Value engineering is brought in the initial stage of design drawing to reduce design errors”. Adding to the 

In the end, it can be said that both method of construction management  is being used. Lastly all it depends on what is most important to you as owner:

  • Control over the project?
  • Strong Cash flow and communication throughout?
  • Or something completed quicker, but at a higher price?

Once you get the answer to these questions you would have an idea to select the best method of construction as per your needs and desires.


difference between BIM and CAD
BIM Service, Blog

Building Information Modeling BIM vs. Computer-aided Design CAD

BIM vs CAD is a much discussed topic in the construction domain. Building Information Modeling constitutes an integrated workflow built as per coordinated and reliable information about a project. BIM modeling services start from the stage of design through construction and operation.  CAD stands for Computer Aided Design and is used for drafting programs. Before checking out BIM vs CAD or the difference between BIM and CAD, let’s have a look at the specific aspects of BIM and CAD.

difference between BIM and CAD

What is BIM?

BIM Building Information Modeling technique collaborates amongst engineers, architects and contractors for building designs. Competent BIM service providers help to analyze & visualize construction design at the pre-construction stage before the beginning of the construction process. Using BIM engineering services, AEC clients get a digital representation of an actual facility, comprising mechanical, HVAC, structural, architectural, electrical and plumbing services. BIM enables resource sharing from inception to completion across various design build stages. Proficient BIM service providers are creating a communication channel to push a project efficiently.

Who uses Building Information Modeling?

  • Architects for 3D Visualization & Design Development, Coordination and architectural drawing services
  • MEP Designers for 3D BIM Modeling Services, Clash Coordination, Design Validation, Shop Drawing creation
  • Structural Engineers for Structural Steel Detailing, Analysis & Quantity Takeoff 
  • MEPFP Contractors for BIM Modeling, Clash Coordination, Shop Drawings & 5D Cost Estimation
  • Home Owners for availing BIM Modeling & Drawings
  • General Contractors for 3d Modeling, 3D visualization, clash detection, 4d BIM scheduling services, BOQ

BIM Modeling Services

Who is a BIM manager or BIM coordinator?

BIM managers are engaged in coordination of architectural, structural and engineering services. They are responsible for coordinating the various stages of designing to final construction of BIM modeling services. Since Revit BIM engineering services are developing at a fast pace in BIM, it’s difficult to work without a BIM coordinator for supporting a project team. The process of coordination depends to a great extent on the nature of projects managed by the BIM service providers. The key roles of a BIM coordinator encompass the duties of an educator, planner, innovator as well as a coordinator.

  • Duties of BIM coordinator as an educator: 

As a BIM coordinator, BIM engineering services support team clarify project requirements in the process of BIM implementation. They coordinate the training courses for the project group and co-create knowledge exchange. They explain the process of construction documentation or  architectural drawing services using specific tools for teaching new techniques of automated working with Revit BIM models.

  • Role of a BIM Coordinator as a planner:

Automated solutions are selected by BIM coordinators, though Dynamo, Revit Model and Robot Processing Automation for creating BIM execution plan. BIM service providers take part in industry events for getting acquainted with the latest developments. They test new practices for pilot projects and apply VDC, Laser scan to BIM, etc.  Using 3d models for BIM engineering services, they visualize projects with Virtual or Augmented Reality.

  • Responsibilities undertaken for BIM Coordination:

BIM managers undertake the responsibilities of assigning geometric collisions to project stakeholders for a specific model. Grouping and identification of clashes helps them view and update collision reports and send them to clients. The clash free BIM model helps to provide 4D BIM scheduling services, 5d BIM cost estimation and 6d facilities management solution. The BIM coordinators verify information accuracy and export data from the 3D BIM model, ensuring that the model parameters are accustomed with the BIM Execution Plan. They work with Revit to AutoCAD converter online. Further, BIM coordinators arrange 3D models in Revit, Tekla and All plan for ensuring an apt coordination amongst architectural, structural and MEP services. They adjust design templates in modeling to enhance workflow with models and establishing agenda for coordination meetings.

What are the  benefits of BIM?

  • BIM engineering services provide a comprehensive representation of building design,  considering building components of electrical, HVAC services, space and resources.
  • BIM pulls documents into a common database, where AEC project stakeholders collaborate on the same model, saving to the cloud. This helps BIM service providers to give instant updates, without wasting time for making modifications to the documentation.
  • BIM modeling services allow prefabrication of components much ahead of time. As a result of which, there is no requirement to make adjustment as per building design.
  • BIM engineering services provide options to clients to update model constantly while working on projects, checking at point of time, leading to quicker approval & efficient project development.
  • BIM modeling services help resource tracking to figure out the resource requirement during the design stage, improving the flow & construction efficacy.

What is a CAD system?

CAD or computer-aided design enables design & documentation through computer technology. Washington DC CAD engineers use CAD for diverse components to fit in a large assemblage. CAD users adeptly create 2D drawings & 3D models for manufacturing of materials. It’s a fact that 3D CAD has transformed the manufacturing sector over the past few years for designing complex products faster.

Who uses CAD?

Manufacturers work with CAD systems for aerospace & automotive manufacturing. CAD is also used in an industrial market for creating quality products faster. Engineers from industrial to civil engineering & plant design use CAD programs. 2D drawing formats consist of DXF & AutoCAD DWG, while 3D formats comprise SolidWorks, Creo, IGES, STEP & SAT.

What are the Benefits of CAD?

CAD provides all tools to create basic 2D & 3D models. Washington DC CAD users include a number of features for creating error-free complex models. CAD system helps to spot errors for the architects and engineers for complex projects.

What is the difference between BIM and CAD? / BIM vs CAD

BIM vs CAD can be evaluated on the basis of Design Visualization, Work Process and Value of Lifecycle.

Design Visualization


  • Conventional CAD is restricted to visualize project design features and the way they fit together.


  • Building Information Modeling provides improved visualization, facilitating AEC stakeholders in planning a building life cycle with cost management, project management and construction management & facility operation from one BIM model. 

Work Process


  • Communication amongst stakeholders is fragmented in conventional CAD


  • BIM Modeling services enable shared knowledge resource for facility information, providing transparency amongst AEC stakeholders, to detect conflicts and avoid rework

Lifecycle  Value


  • CAD Drawings are utilized throughout the facility lifecycle of a building, without detailed product information
  • BIM Model acts as digital twins for real-life structure

Should you Convert from CAD to BIM?

After evaluating  BIM vs CAD, the right decision is to opt for BIM. If you switch to BIM services, you can  make the best use of current and emerging technology. You are able to collaborate on a 3D BIM model on a cloud platform and build it accurately, consulting with all project stakeholders. There is no denial about the fact that converting from CAD to BIM will provide you an edge over your competitors and help you survive in the future. To get 3d modeling, clash detection, 4D BIM scheduling services or shop drawing services, contact BIM modelers of Tejjy Inc. at 202-465-4830 or