How to Calculate the Weight of Steel Bars in Revit
1. When calculating steel bars using the detail schedule in Revit, you will notice that there are no built-in parameters related to weight.
2. To address this, add a parameter for the weight per linear meter of the steel reinforcement by using the ‘Add Parameters’ feature.
2.1 In the detail schedule properties dialog box, click the ‘Add Parameters’ button. In the pop-up parameter properties window, set the parameter type to Instance Parameter. Name the parameter Quantity per Linear Meter and set its type to Number.
2.2 Enter the weight data per linear meter for all steel bars in the project by filling in the numerical values, assuming the unit is kilograms per meter (kg/m).
3. Next, add a calculated parameter to determine the total weight of the steel bars.
3.1 In the detail schedule properties dialog box, click the ‘Calculate Value’ button. In the pop-up parameter properties window, name the new parameter Steel Weight and set its type to Number. Enter the following formula in the input box:
“Total length of steel reinforcement * Quantity per Linear Meter / 1”
The division by 1 is used to ensure unit consistency and avoid unit mismatch errors.
3.2 Verify the units to ensure they match correctly. For example, if the unit for Quantity per Linear Meter is kg/m and the total length of steel bars is in millimeters (mm), adjust the formula to:
Total length of steel reinforcement * Quantity per Linear Meter / 1000
This conversion accounts for the difference in units between meters and millimeters.
The final result will display the calculated steel weight, as shown in the figure below.
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How to Use a Detail Schedule to Calculate Weight in Revit
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