# Diaphragm Construction

This section assigns diaphragms to construction stages.

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**Navigation:** Construction > Superstructure Construction > Diaphragm Construction

For detailed parameter explanations, see the [Diaphragm Construction Reference](https://docs.openbrim.org/templates/concrete-u-girder-bridge-workflow/construction-cug/superstructure-construction-cug/diaphragm-construction-cug).
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## Steps

### Step 1: Navigate to Diaphragm Construction

Navigate to **Construction > Superstructure Construction > Diaphragm Construction** in the tree view.

### Step 2: Assign Internal Diaphragms

Associate internal diaphragms with stages when they are cast or installed.

### Step 3: Assign External Diaphragms

Associate external diaphragms with stages when connections between girders are made.

## Verification

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After completing these steps, diaphragms are assigned to construction stages.
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