Work it out.
Calculators
Curtain fabric with fullness (heading tape)
Ratio arithmetic
Fabric consumption with pattern repeat
Geometri / forholdsregning
Material consumption and cost price
Procentregning
Marker efficiency (fabric utilisation in cutting)
Branchenøgletal (marker efficiency)
Wire consumption and spool requirement
Producentdata (Coats trådforbrugs-guide)
SAM-based production time and labour cost
GSD/SAM – branchestandard (apparelindustriens tidsstudie)
Elastic length for waistbands
Forholdsregning (branchepraksis for elastisk linning)
Bias binding consumption (continuous method)
Geometri (kontinuerligt skråbånd)
Fusing time and capacity for interfacing
Producentdata (Vlieseline fikse-guide)
Shrinkage allowance for patterns
DS/EN ISO 3759 (krympemetode) / Geometri
Extra fabric consumption for pleats/tucks
Geometry
Ironing station capacity
Forholdsregning / Kapacitetsberegning
Buttonhole spacing and number
Geometry
Sewing time per seam from stitches per inch and machine speed
Producentdata (Juki DDL-8700) / Forholdsregning
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.