Wood Baluster guard rail
Spacing Problem

The vertical wood balusters are spaced to far apart. The red arrows represent the space in between the balusters which can't be greater than 4 inches. To correct this problem you would need to insert another baluster in this space or rebuild the guard railing

wood handrialing design with proper spacing

Here's an example of angled guard railing balusters or railing, with less than 4 inches in between them and therefore it meets current local building codes. Remember, building codes change and you should validate all of the information you receive on this website, with your local Building Department.