Yevhenii Kozma
Offer Yevhenii work on your next project.
Private message 
Kyiv,
Ukraine
7 days 14 hours back
available for hire
age 71 years
on the service 2 months 12 days
Rating
Successful projects
Average rating
Language proficiency level
Українська: fluent
Skills and abilities
Design & art
Architecture
Translation
Portfolio
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3D visualization of a studio kitchen in SketchUp and Twinmotion
Interior Design
Project for visualizing a modern kitchen interior combined with a living room. The main focus is on the photorealism of materials (stone, wood) and lighting scenarios. The work demonstrates ergonomic zoning of the space and technical elaboration of details. The work includes a specification of all interior elements with articles, necessary for forming the final estimate for renovation and procurement.
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22 USD Design and render of the workspace (SketchUp + Twinmotion)
Interior Design
A photorealistic 3D visualization of a home office interior has been completed. The main task of the project is to convey the atmosphere of a modern and functional workspace through deep work on lighting and materials.
Project details:
… Style: Industrial minimalism. Emphasis on clean geometry and ergonomics.
Lighting: Natural daylight from the window is set up with global illumination calculations. Soft cinematic shadows are developed to add volume.
Materials: Physically accurate textures (PBR) are used to convey realistic surface properties: light oak wood, matte black metal (without excessive glare), and textured brickwork.
Camera: Architectural framing with a focal length of 35mm and straight verticals without distortions.
Software used: SketchUp, Twinmotion.
This level of visualization is optimally suited for presenting design projects to clients and commercial furniture catalogs. Additional service: I can create a specification for the visualization — a table with item numbers, prices, and links to real stores for purchasing all the furniture, lighting, and decor from the project.
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113 USD Redesign and 3D visualization of a small apartment (33.6 sq m)
Engineering
In this project, a new layout solution was developed and a photorealistic 3D visualization was created for an apartment of typical construction (Khrushchyovka) with a total area of 33.6 sq.m.
The main task was to intelligently zone the limited space to create a modern and ergonomic interior in warm tones.
… Completed scope of work:
Development of an architectural plan with dimensions and furniture arrangement.
Space optimization: allocation of functional zones for the kitchen (6.1 sq.m), living room (11.2 sq.m), and full bedroom (8.4 sq.m).
Detailed 3D modeling of all rooms.
Selection of textures, evening lighting setup, and final render.
Software used: SketchUp, Twinmotion.
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22 USD 3D modeling and design of working drawings in SketchUp + LayO
About the project:
Development of a technical solution to eliminate the deformation defect (crack) in a load-bearing wall made of aerated concrete blocks. The task was to create a clear, accurate, and production-ready reinforcement scheme for overloaded joints to be provided to contractors.
Completed scope of work:
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Engineering analysis of the defect and selection of the optimal solution (installation of a steel sleeve with load redistribution).
Precise 3D modeling of the structural frame: rolled angles, tie plates, threaded rods, fasteners.
Creation of detailed external nodes (3D fragments) to demonstrate hidden fasteners.
Preparation and layout of working documentation: setting up isometric views, creating clipping masks, applying callouts, specifications, and technical requirements.
Tools: SketchUp Pro, SketchUp LayOut.
Result: A clear and detailed drawing that eliminates errors by builders during installation. The combination of classic design with 3D visualization (isometry) makes the project maximally transparent and easy to read on the construction site.
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22 USD Engineering expertise in defects and development of reinforcement schemes
Engineering
Brief description of the service: I provide services for the technical analysis of the causes of cracks, destruction of support nodes, and deformations of walls made of aerated concrete and brick. I prepare professional documentation: defect reports and design solutions for strengthening openings and nodes.
What is included in the work:
1. Preparation of a defect report. Graphic documentation of damages, determination of the causes of cracks (insufficient support of lintels, lack of reinforcement, stress concentration).
2. Analysis of the condition of nodes. Assessment of current load-bearing capacity and forecast of deformation development.
… 3. Development of strengthening schemes. I offer two options for the client's choice:
• Budget solution: strengthening with steel profiles (angles, plates, ties).
• Technological solution (business class): crack injection, installation of steel weights, or the creation of distribution belts.
Technical parameters of the output:
• Documentation is prepared in a professional graphic environment (SketchUp + LayOut).
• Delivery of drawings in high resolution (300 DPI) in JPEG, PNG, or PDF formats.
• Adherence to engineering style and formatting standards (stamps, material specifications, callouts).
To start the work, the following will be required:
• Photographic documentation of the defect from several angles.
• Information about the wall material and type of ceilings.
• Main dimensions (height, width of the opening, wall thickness).
A professional approach to diagnostics allows avoiding unnecessary costs for excessive reinforcement and guarantees the stability of the structure.
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59 USD 3D apartment planning: accurate measurements for renovation and budget estimation
Engineering
A mistake in renovation is costly. Start with an accurate 3D model!
Are you planning a renovation, reconfiguration, or furniture purchase? I will create a digital twin of your apartment — an exact 3D copy where every millimeter corresponds to reality. This will help you avoid mistakes during installation and save on purchasing unnecessary materials.
… What you will receive:
Accurate 3D model: Complete visualization of the space (walls, partitions, windows, doors).
Area calculation (Statement): You will know the exact area of the floor, ceiling, and walls (excluding openings). This is the perfect basis for preparing a budget.
Ergonomics check: We will arrange the furniture in real dimensions to ensure that the passages are comfortable and the doors open freely.
Technical plans: Top views and sections with dimensions indicated for builders.
Why order from me:
Engineering precision: I work in SketchUp with millimeter accuracy.
Budget savings: I provide exact surface areas. You won’t buy an extra 5 meters of laminate or 3 rolls of wallpaper.
Clarity: You will see your apartment "in volume" before any work begins.
To place an order, you need:
A BTI plan, a hand-drawn sketch with dimensions, or a technical assignment.
The cost of my work is 4000 UAH, but thanks to the precise area calculation, you will save at least 6000–8000 UAH on purchasing excess laminate, tiles, and wallpaper, which are usually bought "with a reserve" due to inaccurate plans.
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22 USD Development of a 3D executive scheme: Installation of the mauerlat and reinforced belt
Engineering
This project demonstrates an example of detailed processing of one of the most important and responsible construction nodes — the attachment of the roof to the wall structures. A correct understanding of this "layer" by builders guarantees the reliability of the roofing and the absence of overspending on the site.
What has been implemented:
• Accurate 3D modeling of nodes (SketchUp): The real structure has been accurately reproduced: brickwork, reinforced belt, layer of waterproofing, mauerlat beam, and fastening bolts.
• Visual spatial sections: "Cuts" have been made in concrete and wood to show hidden works and the depth of fastening installations. Such visualization removes 99% of questions from installers and foremen.
… • Standard engineering design (LayOut): Full-fledged sheets of executive documentation have been developed with stamps, annotations, dimensions, and a detailed list of material volumes (WOR).
What problem does this solve for the client: Instead of complex and unclear flat 2D drawings, the contractor receives a transparent 3D instruction. This eliminates errors during concrete pouring and beam installation, while the accurate list of materials prevents overpayment for excess.
Technologies: SketchUp, LayOut.
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22 USD • PTO engineer services: 3D modeling of assemblies, volume calculation
Engineering
Executive scheme of dismantling works (Capital repair of an administrative building)
This project presents a sample of professional executive documentation developed according to strict PTO standards.
Why this approach saves your money:
Absolute accuracy of calculations: Thanks to the use of BIM technologies and 3D modeling (SketchUp + LayOut), all areas and linear dimensions are verified with an accuracy of up to a millimeter. This completely eliminates any discrepancies between the client and the contractor during the signing of the acts of completed works (KB-2v).
… Engineering audit: During the development of the scheme, I do not just draw lines, but check the design solutions for conflicts and "hidden" volumes. In this example, the actual area of ceiling dismantling was 42.76 m², which confirmed the design data and ensured 100% transparency of reporting.
Standardized documentation: The documentation is fully ready for submission to technical supervision. It includes a visual graphic part, a table of technical and economic parameters, and a detailed statement of the volumes of dismantling operations.
Full cycle of works: From analyzing the initial plans and creating a "digital twin" of the premises to forming a ready-to-print package of drawings in PDF/PNG formats.
What services I provide:
• Creation of accurate 3D models of buildings and structures based on your measurement drawings.
• Spatial 3D calculation of the volumes of dismantling and installation works of any complexity.
• Detailing and development of complex construction nodes (roof, mauerlat, facade systems, monolith).
• Formation of statements of work volumes (SOV) for tender documentation and preparation of estimates.
My engineering approach minimizes the financial risks of the client and guarantees successful passing of inspections by regulatory authorities. Contact us, and we will bring order to your construction volumes!
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22 USD I WILL CALCULATE THE REAL COST OF BUILDING A HOUSE IN 1–2 DAYS
90% of private developers overpay by 15 to 30% due to incorrect calculations
Are you planning to build a house and afraid of overpaying?
Do you not understand how much it really costs, not just "in words"?
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I am a construction engineer with over 20 years of experience.
I provide an accurate calculation that can be verified and used in work.
WHAT YOU WILL RECEIVE:
A detailed estimate (Excel) — with a breakdown of work, materials, and costs
Calculation of:
— foundation
— house structure
— roofing
3D visualization (SketchUp) — to see the structure
A clear PDF — for decision-making or communication with contractors
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IN 1–2 DAYS YOU WILL KNOW:
the real cost of construction
where you might be "overcharged"
how much you can save
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I HELP AVOID:
inflated estimates
unnecessary work
mistakes at the start of construction
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WHO IT IS SUITABLE FOR:
— private developers
— those planning a house of 80–200 m²
— those who want to control contractors
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COST:
from 990 UAH (depends on volume and complexity)
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Write:
— the area of the house
— what you already have (drawings / idea)
and I will tell you how much the calculation will cost.
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68 USD 3D design and detailed cost estimate of the foundation, DSTU/RE
Engineering
Eliminate the risk of overpayment and construction errors at the foundation stage. I offer professional development of project and estimate documentation for foundations of any complexity (monolithic slabs, strip foundations, grillages). My approach combines precise engineering 3D modeling and transparent financial calculations.
What is included in the work:
Accurate 3D model of reinforcement: * Complete visualization of the framework (each rebar in its place).
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Development of connection nodes and embedded parts for communications.
Exclusion of the "human factor" during procurement and installation.
Detailed cost estimate (DSTU / REKN):
Itemized calculation of material costs (concrete, reinforcement, formwork, consumables) based on current prices for 2026.
Statement of work volumes and equipment operation.
No "unexpected expenses" during the construction process.
Material specification:
Accurate tonnage and length of reinforcement considering overlaps and bends.
Volume of concrete considering technological reserve.
Your key benefits:
Savings of up to 15% of the budget due to precise calculations without "additions" and unnecessary reserves "by eye."
Transparency for the tender: With my estimate, you can easily compare offers from contractors and monitor their honesty.
High quality of execution: Workers receive a clear visual scheme, which eliminates errors in tying reinforcement.
The result you receive:
3D visualization file (PNG/PDF).
Material specification (Excel/PDF).
Complete cost estimate for implementation (Excel/PDF).
Trust the foundation calculation to professionals. Kron Engineering — precision built into the project.
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23 USD Design and calculation of the reinforcement frame of the foundation slab in 3D
Do you need an accurate calculation of the foundation without overpaying for excess reinforcement?
I will develop a detailed 3D model of the reinforcement for your foundation slab, which will allow you to save up to 15% on material purchases and avoid mistakes during installation.
… What you will receive:
Visual 3D visualization: You will see your frame in cross-section (cells, protective layers, reinforcements).
Accurate material specification: A report on the weight of the reinforcement (in kg and meters) and the exact volume of concrete.
Consideration of all nodes: Drawing of U-shaped elements, fixators ("frogs"), and embedded parts for communications.
Compliance with standards: Calculation of protective layers of concrete and overlaps of reinforcement according to SNIP.
Why this is beneficial:
Workers often ask to buy reinforcement "with a margin," which then rusts on the site. With my calculation, you will order exactly as much as needed according to the project. The foreman will not be able to deceive you, having a clear reinforcement scheme in hand.
To calculate the cost, please send the dimensions of the foundation and the planned load.
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3D model of a wall section with flexible connections and brick
Task: Creation of a visual and technically accurate 3D node of the facade wall for a construction project / catalog of technical solutions.
What has been implemented in this work:
… Multilayer structure: Detailed construction of the "layer cake" of the wall: aerated concrete (375 mm), basalt insulation (100 mm), ventilation gap (40 mm), and facing brick (120 mm).
Engineering accuracy: Hidden elements have been taken into account and visualized in the model — reinforcing mesh and flexible basalt-plastic ties.
Cascading cut: A stepped layer cutting method has been applied for maximum informativeness and understanding of the assembly sequence.
Technical "X-ray": A separate detailed cut (Detail A) has been made, demonstrating the depth and reliability of the fixation of flexible ties in the load-bearing base and facing layer.
Who benefits from such visualization:
Developers and architects: For presenting design solutions to clients.
Construction teams: As a visual instruction for assembling complex nodes.
Manufacturers of building materials: For creating quality content in technical catalogs.
Tools: SketchUp, Paint.NET.
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23 USD 3D modeling of the foundation slab (structural node for accuracy)
I will develop a detailed 3D model (structural cross-section) of your foundation. This is not just a visualization, but a full-fledged working tool for accurate cost estimation and control of builders on site.
What you receive:
… A clear layered scheme of the "cake" (from compacted soil to a monolithic concrete slab).
A drawing of reinforcement and nodes for the input of engineering communications (sleeves, sewage).
Correct technical terminology and selection of modern materials (XPS, profiled membranes, etc.).
What problem does this 3D model solve:
Cost savings: Accurate volume calculations eliminate material overuse (concrete, reinforcement, bulk materials). You buy exactly as much as needed.
Error protection: Builders receive a clear scheme that eliminates ambiguous interpretations of drawings.
Transparency: You clearly see what you are paying for at each stage of the zero cycle.
I work for results and reputation. I am ready to create a similar 3D scheme for your project and confirm every figure in the estimate.
Terms of cooperation:
Base cost: 1000 UAH for the development of one 3D node. The exact price depends on the complexity of the structure.
Completion time: 1-2 working days from the moment of agreement on the initial data.
Bonus: The base cost already includes 2 rounds of revisions to bring the result to perfection.
Kron Engineering — Accuracy. Transparency. Control.
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2 USD Reference estimate (AR/KJ) | Complex hipped roof 171 m²
Engineering
Reference estimate (AR/KJ) | Complex hipped roof 171 m2
Description:
Type of object: Private residential house (120 sq.m by footprint).
… Scope of work: Complete calculation of the roof structure with a comparative analysis of 3 types of covering.
What has been implemented in this case:
Detailed calculation of volumes: Exact areas of slopes, lengths of ridges, edges, and eaves have been determined taking into account the slope.
Estimate according to DSTU/REKN: The work is divided into technological stages (mauerlat, rafter system, insulation, lathing).
Variability: 3 options for the finishing covering have been calculated (metal tiles, bitumen, and ceramic tiles).
Engineering support: A material list has been compiled considering the technological reserve for cutting.
Commercial block: Clearly defined areas of responsibility for the contractor, deadlines, and guarantees.
CONCLUSIONS AND ENGINEER'S RECOMMENDATIONS (excerpt from the calculation):
In each estimate, I do not just sum up the numbers, but also provide a technical justification for optimizing the budget. An example of my conclusion for this object:
"For the complex hipped roof, I strongly recommend Option 2 (Bitumen tiles). You will significantly save on material waste: 5% waste compared to 20% in metal on diagonal cuts. Bitumen tiles perfectly navigate all the geometric complexities of a hipped roof, providing absolute waterproofing and no noise during rain. Ceramic is a premium choice but requires mandatory recalculation of the foundation and walls for additional load (up to 50 kg/sq.m)."
This document is an example of the "Standard 10/10" approach, where each figure is justified by geometric calculation and regulatory framework.
Activity
| Latest proposals 2 | Budget | Added | Deadlines | Proposal | |
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Construction
226 USD
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3D project / model / drawing of a utility room on a metal frame
43 USD
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