Every city skyline starts out as a simple sketch, and every office building, shopping center, and hotel gets built based on numerous drawing sheets. Undoubtedly, the client will remember your fancy rendering. However, what is truly important is your drafting, which will give contractorsinstructions on how to build, where to build,, and what materials should be used for construction. If you draft properly, your construction process will go smoothly. Otherwise, prepare to see the prices rise each week. In this manual, we will try to guide you throughout the process of building, starting from conception until the construction stage, through illustrations, tools, and useful tips which can be applied even before the first shovel of ground is moved.
Understanding Your Site Before Even Making a Drawing
An architect eager to start his drawings will just spend his time in vain. Good architects will ensure that they have knowledge of all the restrictions related to zoning, floor area ratio, soil composition, wind direction, traffic, and utility connections.
Critical Elements for an Effective Brief
A brief is the agreement between the client and the design team, which should be done in such a way as to reduce surprises that will cost you more money in the future.
Objectives of business: Square feet of rentable space, profitability, and brand identity
- Occupancy: Number and frequency of occupancy of the occupants in the building
- Budget ceiling: Contingency of 5-10%
- Performance: Energy savings, green building,g and accessibility
- Time frame: Deadlines for all decisions
- The critical element: A well-written brief will save you more money than any value engineering exercise that may be done later at the drawing stage.
Architects, Engineers and Construction Management Companies – The Dream Team
Why Getting Involved Early Helps
If a construction manager looks at drawings during the conceptual phase, then issues related to constructability are found when it is relatively inexpensive to correct them. It takes just a few hours to change a column grid that conflicts with parking ramps, and a few weeks to do it in real life.
Staying Coordinated
Weekly coordination meeting with a common list of issues
Establish file names and numbering conventions before issuing the first drawing
Designate one person making decisions for the client
No major design changes after the design development phase
The important thing is that projects don’t fail due to bad ideas, but due to unclear responsibilities. Put in writing who decides what.
Why Involving Early Is Important
If a stainless steel manufacturer reviews the drawings at the conceptual stage, then any problems that arise in terms of constructability will be spotted at an early stage when it is still cheap to fix them. Changing a conflicting column grid with respect to parking ramps is just a matter of a few hours in theory, and of a few weeks in reality.
Coordination
Weekly coordination meetings with an issue list
Creating file names and a numbering system before the release of the first drawing
Selecting one decision-maker on behalf of the client
No significant design changes after the design development stage
The crucial point here is that the project should not fail because of poor concepts but rather because of unclarified responsibility.
Materials Suitable For Use: Getting The Fabricator Advice At The Early Stages
As you select the materials at the end of your project, you are actually selecting the wrong material. When designing coastal buildings, one has to select materials such as cladding systems, handrails, kitchens, lifts, curtain wall fixings and sanitary fittings. Such materials should have the ability to resist adverse conditions like salty air. In the drafting of requirements, there should be grades, finishes, thicknesses, and fastenings.
Grades And Finishes
Grade 304 is suitable for interior use. Grade 316 is made up of molybdenum and hence resistant to chloride corrosion. It is thus suitable for coastal areas. The brushed finishes hide fingerprints in crowded lobbies, whereas the mirror finishes are suitable for feature walls.
Do not forget the lead time when making plans in the early stages of your designs. Customizing takes 10 to 16 weeks.
- Take sample drawings before bulk orders.
- A mill certificate is vital for checking the grades and material origins.
- An expansion joint is always important due to changes in temperature.
Advice: Consult your fabricators in the early stages of your designs and not after bidding to get advice on sheet sizes and welding technique.
How Much Does It Really Cost?: Design and Drafting Budget Estimation
Design cost is a tiny proportion of the total cost of construction; however, it plays an essential role in nearly every penny of expenditure. Fees depend on complexity, location, and services provided; however, the table below provides a standard fee range for planning presented as a percentage of the construction cost.
Table 1: Standard Design and Drafting Fees by Building Type
|
Type of Building |
Fees (% of construction cost) |
Fees on Project for USD 10 Million |
|---|---|---|
|
Retail/shopping units |
6–10% |
USD 0.6 million – 1.0 million |
|
Mid-size office block |
5–8% |
USD 0.5 million – 0.8 million |
|
Hotel/hospitality |
7–11% |
USD 0.7 million – 1.1 million |
|
Health care facility |
8–12% |
USD 0.8 million – 1.2 million |
|
Large mixed-use complex |
4–7% |
USD 0.4 million – 0.7 million |
Where the Design Effort Goes
|
Project Aspect / Category |
Allocation / Impact |
Strategic Recommendation & Key Notes |
|---|---|---|
|
Drafting Phase |
~40% of total efforts |
|
|
Site Phase Budget Tip |
10% of the total fee |
Contingency allocation: Always allocate 10% of the fee specifically to handle site-phase problems. |
|
Late-Stage Design Changes |
Double the effort (Hidden Cost) |
Avoid late changes: Changes made at a late stage of design development will double the required effort |
|
Efficiency & Cost Savings |
Optimized component choice |
Construction from Sketching: The Sequence Before Drawing
It is common for many property owners not to appreciate the amount of time that is required for drawing.
The rush to document the project proves to be effective until the contractors send hundreds of requests for information. The following schedule is indicative of a typical 6,000 m² office building.
Table 2: Project Schedule for a 6,000 m² Commercial Office
|
Stage |
Duration (weeks) |
Key Deliverable |
|---|---|---|
|
Concept and feasibility |
3 – 5 |
Massing studies, area schedules |
|
Schematic design |
4 – 6 |
Plans, sections, elevations |
|
Design development |
6 – 8 |
Systems coordination, materials selection |
|
Construction documents |
8 – 12 |
Complete set of drawings and specifications |
|
Authority approvals |
4 – 8 |
Approvals of permits and compliance |
|
Tender and award |
3 – 4 |
Selection of the contractor |
|
Total |
28 – 43 |
Ready to construct |
Steps to Safeguard Your Timeline
Submit early after pre-submission discussions.
Ensure prior delivery of items like lifts and facades before submission of the entire bundle
Have a revision checklist to ensure that everybody uses the updated checklist. list
Have a final cross-departmental discussion before submission of the tender
Time is money. In case of every delay for a month in a commercial building, there will be lost rent or earnings from the business.
- Choice of the Right Partner: Contribution by the Construction Company in Oman
Local know-how is equally crucial as experience. Weather conditions, local laws, supply chain, and labor laws in Oman are factors determining what and how fast you will be able to build. Competent construction firms in the region will analyze your plans and ask anyqquestionsn regarding any unclear information provided.
Questions to answer before signing
Do they construct commercial buildings with interior finishing on a scale comparable to theirs?
Are they using BIM models, or do they only use plans?
Who is going to get permits and when?
With whom do they cooperate concerning steel, glass and mechanical systems deliveries?
How do they communicate with you regarding the process, cost, and risk?
Main point is that designer, who begins work in design phase, pays something, but he saves lots at the same time due to absence of rework.
Conclusion
The commercial building does not appear out of thin air and without any prior planning. All of the buildings arise due to proper comprehension of the brief, teamwork, control of drafting, choice of materials, and budgeting. Consider your draft as an investment, and you’ll see how it is profitable.
Most common questions
1. How long does it take to create an architectural drawing of a commercial building?
In general terms it takes 28-43 weeks to develop architecture solution of medium size office building from beginning till tendering phase depending on permissions and changes in the design.
2. How do design drawings differ from construction drawings?
Design drawings are intentions, while construction drawings are drawings made to build the building.
3. Is BIM obligatory for all commercial buildings?
No, it is obligatory for medium and large buildings.
4. What do I provide for the design fee?
The commercial design cost will range between 4% and 12% of the cost of construction.
5. Are there any possibilities of making changes in the design during the course of construction?
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There are some possibilities for changes in design, but this is an extremely costly procedure. Implementing changes on site may be several times more costly than implementing those changes in the design process.
