Work it out.
Calculators
Glass weight and lifting calculation
Massefylde (2500 kg/m³)
Energy balance Eref – facade window
BR18 / Eref
Energy balance Eref – rooflight / glass roof
BR18 / Eref (ovenlys)
Uw – the window's overall U-value
DS/EN ISO 10077-1
Condensation risk on a glass surface
Fysik (Magnus-Tetens-formel) + DS/EN ISO 6946 (Rsi)
Wind pressure on a glass façade – basic calculation
DS/EN 1991-1-4 (princip) – screeningsværktøj
Solar gain with solar shading (g-total)
DS/EN 14501 (afskærmningsfaktor Fc)
Order dimensions for a new pane
Branchepraksis (opmålingsguide)
Sealant consumption and number of cartridges
Geometri + producentdata (patronvolumen)
Linseed oil putty consumption for glazing rebates
Producentdata (Dana Lim, densitet 2,1 kg/l)
Number of suction cups for a safe lift
DS/EN 13155 (vakuumløfteudstyr) + producentens WLL
Weight of the aluminium profile
Materialefysik (densitet 2700 kg/m³)
Thermal linear expansion of an aluminium profile
Materialefysik (α = 23,1×10⁻⁶ /K)
Argon gas consumption in TIG welding
Svejseguide (typisk gasflow 8-12 l/min ved alu-TIG)
Glazing area requirement for daylight (BR18)
BR18 §379-381 (10%-reglen)
Window sill — bottom flashing
Exact flat pattern
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.