Design
Cable runs & lengths
Draw a cable on the floor plan and Avitly works out its true length: horizontal run, slack, and vertical drop.
Cables you draw directly on a calibrated floor plan get a real length, not just a line on a page. Avitly adds up the horizontal run you drew, a slack allowance, and any vertical drop between ceiling and floor devices that a top-down plan cannot show.
Before you start
The floor plan needs to be calibrated (see Floor plans) before any cable shows a length. Until then, the cable tool still lets you draw runs, but the panel shows a prompt to calibrate rather than a measurement.
Set up cable types
- From the floor plan, open the cable type manager and add a type, for example Cat6 UTP or a speaker cable.
- Give it a colour, a cost per metre (or link it to a product in your catalog so cost and BOM tracking come from there), and optionally a max length and an excess allowance.
- Excess per end is a service-loop slack added at both terminations, so a 3 m value adds 6 m to every run of that type.
- Max length is optional and only used to warn you when a run goes over what that cable type can realistically carry.
Draw a run
- Select the cable tool and click from one device or point to another. Use the path tool first to draw a conduit if several cables will follow the same route.
- A cable can ride a path: draw its two ends near an existing conduit and it snaps onto the path and follows it, instead of you retracing the same route for every cable.
- Select a point on the cable and set its height above the floor to model a drop, for example a ceiling speaker feeding down to a floor box. The vertical length is the sum of the height changes along the run.
- Pick the cable's type from the properties panel to price and colour it.
Read the length
The properties panel breaks a selected cable's length into horizontal run, vertical drop (only shown when non-zero), and a total. The total already includes the type's excess allowance. If the total exceeds that cable type's max length, a warning appears directly under it.
Tips
- The horizontal run includes a fixed 12% slack for terminations, sag, and service loops on top of the drawn distance, in addition to any per-end excess you configured on the cable type.
- A path (conduit) itself is never priced as cable and carries no excess allowance; only the cables riding it are.
- Cable totals per type, including cost, feed straight into the bill of materials and the quote, so a change to a cable type's cost per metre updates pricing everywhere it is used.
- Switch your organisation's unit system between metric and imperial in settings; lengths are stored canonically and displayed in whichever unit you have set.
See also Floor plans and Connectors & signal validation.

