Cost database: gangs
A gang is a named crew. Its rate is worked out from the member trades. You never type a gang lump sum.
Open Gangs. A gang has a name, a unit (hour or day), and members. Each member is a trade plus how many people.
The gang rate is the sum of (people × that trade’s current rate), converted to the gang’s unit. Change the bricklayer rate and the bricklaying gang follows, in the library. An estimate already priced keeps the rate it was inserted at.
An output constant (for example 500 bricks per gang-day) records how fast the crew works. The buildup’s Add labour uses it so you do not have to work out an hours-per-unit figure, and it is offered whenever the work is measured in the same unit the output is stated in.
On takeoff costing, per unit is how many gang-hours or gang-days you need per unit of the material line. Check the gang’s unit before you type 1.
Fields
- Gang unit
- Whether the derived rate is per hour or per day. A day is 8 hours.
- Example: Hourly gang + per unit 1 on an m³ line = 1 gang-hour per m³. Daily gang + per unit 0.125 = 1 hour per m³.
Examples
2:1 bricklaying gang
Members: 2 × bricklayer, 1 × labourer. Unit: day. The derived day rate is 2 bricklayer-days + 1 labourer-day. On a wall item you might set 0.15 gang-days per m² if that is your output.