Two of the most-requested features are now live in ConCal. This update adds curved shape drawing for round slabs, circular driveways, and irregular pads — plus a built-in weather check so you can see pour conditions before you commit to a date. Here's what's new and how to use it.
Curve Drawing for Round and Irregular Shapes
ConCal's drawing canvas lets you place points to trace any shape. Most pours are straight-edged — rectangular slabs, L-shapes, basic footings — but a whole category of jobs needs curves: circular patios, sweeping driveways, bull-nose steps, kidney-shaped decorative flatwork. The curve tool handles all of it.
How to add a curve to any segment
Draw your shape as usual by clicking points on the canvas. Once you have at least two points, right-click any segment and choose Add Curve from the context menu. A diamond-shaped control handle appears at the midpoint of that segment — drag it to bend the line into a curve. You can reposition the handle at any time to adjust the depth and direction of the arc. Close the shape when you're done and the cubic yard estimate updates immediately.
What curved drawing unlocks
- Curved driveways: Trace the exact shape of a sweeping driveway without breaking it into approximated rectangles.
- Radius corners: Right-click any corner segment and add a curve to round it off — great for decorative patios and flatwork.
- Irregular pads: Any pour with a curved boundary can now be drawn accurately in one shape.
- Mixed shapes: Some segments straight, some curved — each segment is controlled independently.
Built-In Weather Check for Pour Planning
Pouring concrete in bad weather is one of the fastest ways to ruin a job. Rain dilutes the mix. Cold slows cure times and risks freeze damage. High heat accelerates setting and can cause surface cracking. ConCal now has a weather tab built into the side panel so you can check conditions before you commit to a date.
How to use the weather check
Click the Weather tab in the right-side panel. Type in a city name or ZIP code, then click Get. ConCal pulls a 5-day forecast and analyzes each day for concrete-specific risks — temperature, precipitation chance, and wind. Days with problems show specific warnings so you know exactly what to watch for.
What the warnings cover
- Below freezing low with cold high: ConCal flags days where concrete will freeze before it cures and recommends rescheduling or using a heated enclosure.
- Near-freezing pour window: If temperatures during typical pour hours (6am–2pm) drop near 40°F, you'll see a warning to use warm mix water and insulating blankets.
- Heat above 90°F: Accelerated set time. ConCal suggests an early morning pour and aggressive curing.
- Rain probability above 30%: Warning to have plastic sheeting ready. Above 60% with actual rain in the forecast, it's flagged as a reschedule candidate.
- Wind above 15 mph: Increases surface evaporation, which can cause plastic shrinkage cracking. Flagged with a note to monitor surface moisture.
Full Changelog
Both features are available on the free plan. No account required — open the app and they're already there.