You may want to create different scenarios for different land types as per their fire flow requirements. You would need to create selection sets of fire nodes of each type, then configure the Fire Flow alternative to use the particular set of nodes, in the fire flow nodes field. You can create child scenarios/alternatives as needed for the different types. Then batch run the multiple scenarios together Another option would be to specify local constraints in the fire flow alternative, for residential/commercial land types. But it would be tricky to manage the local constraints for number of nodes.
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