1 · Follow the weightEvery load needs
Every load needs
a way to the ground.
The roof rests on walls or beams. They pass the weight to columns, foundations and finally the soil. Every connection matters.
Buildings make more sense when you can see inside
Ever wondered
how buildings work?
Follow one from the first idea to the finished space. See what keeps it standing, dry and comfortable — and discover the people who make it happen.
Take a closer look
Every part has a job.
FRAMEOUTER SHELLMATERIALSPOWER + WATERDETAILS
Four simple ways to read a building
Look beyond the walls and windows.
Ask where the weight goes, where rain goes, what keeps heat inside and which part must be built first.
2 · Check the joins
Problems often start where parts meet
3 · Follow the protective layersSmall gaps can cause
Small gaps can cause
big problems.
Insulation and waterproof layers only work when they continue around corners, windows and pipes without breaks.
4 · Think about the order
Good ideas must be possible to build
A drawing may look perfect, but workers still need enough room and time to install, check and protect each part.
Follow the journey from start to finish
First decide. Then design. Then build.
Each stage gives the next team something they need. Follow the numbered path to see what happens, what is ready at the end and what comes next.
- 1Decide
- 2Design
- 3Approve
- 4Prepare
- 5Foundations
- 6Frame
- 7Close
- 8Fit out
- 9Test
01Start hereDecide what to buildThe team agrees who the building is for, what it needs and how much it can cost.
What happensThey talk to the future users, visit the site and study the budget. They also check the ground, nearby roads and whether water and electricity are available.
Ready at the endOne clear idea that fits the users, site, time and budget.
What comes nextNext, the design team turns that idea into drawings.
Who does itOwner, architect and cost planner
02ThenDraw and plan the buildingArchitects and engineers work out how every part will look, stand up and fit together.
What happensArchitects plan the rooms. Engineers plan the frame, heating, fresh air, water and electricity. The drawings are combined so pipes do not run through beams or block doors.
Ready at the endA set of coordinated drawings showing what will be built.
What comes nextNext, the project needs permission, prices and a builder.
Who does itArchitect, engineers and 3D-model coordinator
03Before buildingGet permission and choose buildersThe design is checked, priced and turned into a practical plan for construction.
What happensLocal authorities review the project. Builders give prices. The team chooses who will do each job, creates a schedule and orders items that take a long time to make.
Ready at the endPermission to build, an agreed budget, a schedule and a construction team.
What comes nextOnce those are ready, work can begin on the site.
Who does itPlanning officers, inspectors, cost planner and builders
04Construction beginsPrepare the siteThe team makes the site safe and marks exactly where the building will stand.
What happensThey put up fences, create safe routes, find buried pipes and cables, remove weak soil and install the first underground drains.
Ready at the endA safe, level site ready for the building’s foundations.
What comes nextNext, builders make the parts that will carry the building into the ground.
Who does itSite manager, surveyor and groundworks team
05Below groundBuild the foundationsConcrete bases spread the building’s weight safely into the soil.
What happensWorkers dig to strong ground, place steel bars and pour concrete. They also add waterproof layers, drains and openings for pipes before everything is covered.
Ready at the endA strong, level base ready to support the structure above.
What comes nextWith the base complete, the building can start growing upward.
Who does itStructural engineer, groundworkers and concrete team
06Above groundPut up the frameColumns, walls, beams and floors create the building’s skeleton.
What happensThe team builds one level after another. Cranes lift heavy parts into place, while temporary supports keep the unfinished frame steady.
Ready at the endA stable skeleton that gives the building its height and shape.
What comes nextNext, the open frame needs a roof, outside walls and windows.
Who does itStructural engineer, frame builders and crane team
07Make it weatherproofClose the building from the weatherThe roof, outside walls and windows keep rain, wind and cold outside.
What happensRoofers and façade teams add windows, insulation and waterproof layers. Every edge, corner and opening must connect without gaps.
Ready at the endA dry, protected building where inside work can continue safely.
What comes nextNow teams can install the systems and finish the rooms inside.
Who does itArchitect, façade engineer, roofers and window installers
08Make it usableAdd pipes, wires and roomsHidden systems and visible finishes turn the empty frame into useful spaces.
What happensElectricians and plumbers install cables, pipes, heating and fresh-air ducts. Other teams add walls, ceilings, doors, cabinets, lights and floors.
Ready at the endFinished rooms with working power, water, heating and ventilation.
What comes nextBefore anyone moves in, every system must be tested together.
Who does itServices engineers, skilled trades and interior team
09Final stepTest everything and openThe team proves that the finished building is safe and works as planned.
What happensThey test lights, water, heating, fresh air, lifts, alarms and emergency systems. Problems are fixed, final inspections happen and building managers learn how everything works.
Ready at the endA safe, working building that is ready for people to use.
What comes nextThe building opens. The team keeps checking it and fixes any early problems.
Who does itTesting team, inspectors and building managers
See how the parts work together
Six questions unlock almost any building.
You do not need to know every technical word. Start with weight, water, air, heat, fire safety and the hidden pipes and wires.
01
Strength
What keeps it standing?
Floors and roofs pass their weight through beams, walls and columns, then into the foundations and ground.
- Try this
- Pick one heavy part and follow its path all the way down. Pay attention wherever one material or shape changes into another.
- Signs of a problem
- Large cracks, floors that bend too much or damaged connections.
02
Water
Where does the rain go?
Sloping roofs, overlapping layers, gaps and drains guide water away before it can reach the inside.
- Try this
- Imagine you are a drop of rain. Can you always move down and out, even around a window or pipe?
- Signs of a problem
- Water marks, mould, rust, rotten timber or peeling finishes.
03
Air
Where could air leak through?
A sealed layer stops unwanted draughts and helps rooms stay comfortable without wasting energy.
- Try this
- Follow the sealed line around the building without lifting your pen. Look closely near windows, roofs and pipes.
- Signs of a problem
- Draughts, whistling, damp patches and rooms that are hard to heat.
04
Heat
Does the insulation have gaps?
Insulation slows heat loss. Metal parts, balcony slabs and empty gaps can create shortcuts for heat to escape.
- Try this
- Follow the insulation around the whole building and look for thin spots or breaks.
- Signs of a problem
- Cold walls, condensation, uncomfortable rooms and higher energy bills.
05
Fire safety
How do people get out safely?
Alarms give warning, protected routes lead outside and fire-resistant walls slow the spread of fire and smoke.
- Try this
- Look for clear escape routes and make sure holes for pipes or cables are safely sealed.
- Signs of a problem
- Blocked exits, gaps in fire-resistant walls or safety systems that were not tested together.
06
Power, water and air
Can the hidden systems fit and be repaired?
Cables, pipes and air ducts all need space. Workers must also be able to reach them later.
- Try this
- Check their routes before ceilings close. Can a valve, filter or machine be reached and replaced?
- Signs of a problem
- Parts that collide, hidden valves, weak airflow, leaks, noise or wasted energy.
Meet the team
It takes many kinds of thinkers to make one building.
Some people draw, some calculate, some organise and some build with their hands. Here is how eight common roles fit together.
JobWhat they doWhat they makeTheir big question
Architect
Imagine + organisePlans, 3D views and material ideas
How the building looks, feels and works for people
Structural engineer
Calculate + testCalculations and plans for the frame
How the building stands up safely
Building-services engineer
Design + testPlans for power, water, heating and fresh air
How rooms stay safe, useful and comfortable
Cost planner
Measure + budgetCost estimates and price comparisons
What the design costs and where money can be saved
Construction manager
Plan + leadSite schedule, safety plan and daily coordination
Who works where, when and in what order
Skilled trade
Make + installReal walls, pipes, wiring, finishes and test results
How a drawing becomes accurate physical work
Building inspector
Check + recordInspection notes and approvals
Whether important work follows safety rules
3D-model coordinator
Combine + solveShared models and clash reports
How every team’s design fits in the same space
Which path might fit you?
If you enjoy…
drawing, imagining spaces and balancing different people’s needs
Try architecture or design coordination.If you enjoy…
physics, maths, experiments and finding out why things work
Try structural or building-services engineering.If you enjoy…
teamwork, practical skills, organising people and solving problems on the spot
Try construction management or a skilled trade.Words you’ll hear on site
Technical terms, in plain English.
Start with eight useful words. When you are ready, search the full guide or choose a topic.
8 of 80 terms shown
Load pathStructure
The route that weight follows from the roof and floors, through the frame and foundations, into the ground.
FootingStructure
The wide bottom part of a foundation. It spreads the building’s weight over the ground.
Thermal bridgeHeat
A shortcut that lets heat pass around insulation, often through metal, concrete or a gap.
Air barrierOuter shell
A sealed layer that stops unwanted air leaking through walls and roofs. It helps prevent draughts and wasted heat.
FlashingOuter shell
A waterproof piece placed around joints, roof edges and windows to guide rain safely away.
RebarConcrete
Steel bars placed inside concrete. They help concrete resist pulling forces and control cracking.
BIMCoordination
Building Information Modelling: a shared digital model that helps different teams design the same building without their work clashing.
CommissioningOpening
The final process of switching on, testing and adjusting a building’s systems to prove that they work.
Want more? The full word guide is one click away.
Building words and safety rules can vary by country. Use this guide as a starting point, not as instructions for real construction work. Always ask a qualified local professional.
Technical basis: OSHA construction glossary, cast-in-place concrete requirements, GSA Commissioning Guide, and DOE envelope guidance.