Calculation and management of materials and tools

The application determines the required materials, hand and power tools for a given scope of work and keeps track of them afterwards. The calculation uses consumption rates for each technology stage; the result is saved as a request. A request is passed to the crew or received into a company warehouse. Items are moved between warehouses and issued to company members; each member has a list of what was issued to them.

Go to calculation

Workflow

Calculating a request

technology → volume → statement

  1. Choosing a type of work and a technology
  2. Entering the work volume and the number of crews
  3. Statement of materials and tools; the request is saved automatically

Passing a request on

list → sending → warehouse

  1. List of saved requests
  2. Sending a link to a messenger or exporting to .ods
  3. Choosing a warehouse to receive the request items

Warehouse and issuing

warehouses → items → recipient

  1. Company and personal warehouses
  2. Selecting items in a warehouse
  3. Issuing to a company member with quantities

Item catalog

item → sizes → new item

  1. Materials catalog with search and a type filter
  2. Item sizes and their codes
  3. Adding your own item

Your own technology

stages → rates → notes

  1. Technology composition by stages
  2. Stage rates: materials, hand and power tools
  3. A note on a rate: its source or assumption

Calculation method

A technology consists of stages. Each stage has rates: for materials — per unit of work volume, for tools — per crew. A crew is the smallest working group; a team consists of one or more crews.

Materials
Q = n × V n — consumption rate per unit of stage volume, V — stage volume. A stage without a volume yields no materials.
Tools
Q = max (n × k) n — rate per crew, k — number of crews. The maximum across stages is taken, not the sum: the same tool moves from stage to stage.
Rounding
Items counted in pieces are rounded up to a whole number, others to hundredths.
Items without a rate
When the quantity depends on site conditions, the rate is zero: the item stays in the request with a mark and is filled in manually.

Data organization

Size as the key
Rates and warehouse stock are bound to the assembly code — the item and its parameter values. When parameters change, the link breaks instead of moving to another size.
Shared and own data
Editing a shared technology or item creates your own copy; the original stays unchanged for other users.
Working without an account
Calculation and requests are available without signing in. Such a request is kept by a key in the browser and is attached to the account after signing in; otherwise it is deleted 30 days after the last change.
Access by link
A request opens by link for any recipient — without signing in and without access to the author's other requests.
Companies and roles
Warehouses belong to a company. Member roles: owner, management, review, storage. The owner and managers assign to warehouses and issue items; a recipient must be a company member.
Built for the site
The layout is designed for a phone screen; action panels are placed at the bottom of the screen.