The Curving.csv file contains all the sheet curving charges used in Roof Wizard. This file controls the pricing for curved sheets in bullnose verandah applications.
🧾 What it does
The curving calculation determines the cost to curve sheets based on their length. When a bullnose verandah is present in your design, Roof Wizard measures the overall length of each sheet, finds the relevant supplier and length range, then applies the appropriate curving charge (which you'll see on the Costing Supply dialog box).
📁 File location
The Curving.csv file is located in your Roof Wizard data directory alongside other material definition files.
🔧 CSV file format
The file uses a comma-separated format with the following structure:
Field | Description | Example |
Field 1 | The name of the supplier | Supplier |
Field 2 | The key string "Curve Quality" | Curve Quality |
Field 3 | Your internal code | CURV0035 |
Field 4 | The "from" length (metres) | 0 |
Field 5 | The "to" length (metres) | 3.5 |
Field 6 | The cost to curve this length sheet | 10.34 |
🛠 Example CSV content
Here's a sample Curving.csv file:
; Sheet curving charges definition file for Roof Wizard
; Supplier, Profile, Product code, FromLength, ToLength, Cost per curve
Supplier, Curve Quality,CURV0035,0,3.5,10.34
Supplier, Curve Quality,CURV03570,3.51,7.0,17.23
Supplier, Curve Quality,CURV07010,7.01,10.0,21.24
Supplier, Curve Quality,CURV1013,10.01,13,42.74
END
🔧 How the calculation works
The cost to curve a sheet is based on the length of the sheet falling within a defined length range. For example, the cost to curve sheets which are from 3.51 metres long to 7.0 metres long may be a fixed value. So, a sheet 4.0 metres long would cost the same to curve as one 6.7 metres long.
When calculating curving charges, Roof Wizard:
Measures the overall length of each sheet requiring curving
Finds the relevant supplier name in the CSV file
Locates the correct length range record
Applies the particular cost for that range
💡 Tips for setup
Length ranges: Set up overlapping or consecutive length ranges to cover all possible sheet lengths in your projects.
Supplier matching: Ensure the supplier name in the CSV file exactly matches your active supplier in Roof Wizard.
Zero costs: If you don't want to apply curving charges for certain ranges, set the cost to zero.
⚠️ Important notes
All length measurements in the CSV file are in metres. The curving charges only apply when bullnose verandahs are present in your roof design.