Civil engineering students
Complete structural design projects and quantity takeoffs quickly, with formulas to cross-check against hand calculations.
About us
What is BuildLab?
BuildLab (congcuxaydung.com) is a free online structural calculation and construction quantity takeoff platform that helps Vietnamese engineers, students and contractors get TCVN-compliant results right in the browser — no installation, no complex spreadsheets.
Explore toolsTCVN COMPLIANT
Our mission
Quantity takeoff and cost estimation in Vietnam is still done manually in Excel — error-prone and time-consuming for every coursework project or quotation. BuildLab turns current TCVN standard formulas into online tools: you enter the numbers, the system returns results with traceable formulas for cross-checking — faster, more consistent and more transparent. All basic tools are free with no usage limits.
Who is BuildLab for?
Design & supervision engineers
Verify loads, reinforcement and soil bearing capacity per TCVN 2737:2023, TCVN 5574:2018 and TCVN 9362:2012 on the spot.
Contractors & homeowners
Estimate concrete, steel and formwork quantities for preliminary budgets, comparing quotations and preparing materials.
Available tool groups
BuildLab currently runs two tool groups, continuously updated based on user feedback:
Quantity takeoff
Advanced tools
- Construction unit converter
- Basic load calculation
- Simple beam/slab reinforcement
- Basic formwork/scaffolding
- Static wind load calculation
- Basic load combinations
- Isolated-footing flexure check
- Soil bearing pressure check
- Eccentric column
- Circular & annular column
- RC stair design
- Pile bearing capacity
- Nonlinear column (uniaxial)
- Seismic load
- Crane/suspended-crane load
Product roadmap
Project management & calculation history tied to each work
Cost estimation: material unit prices and complete quantity exports
Materials management & supplier quotation comparison
Professional report export (PDF/Excel) for acceptance and settlement
Contact us
Found a bug in a calculation or want to suggest a new tool? We read every piece of feedback and respond as quickly as we can. Email the project owner directly:
Email:[email protected]