City of Semmes
Design Standards
44
Location and size of proposed and existing drainage pipes
Location of all existing utilities, appurtenances, and drainage structures (it
should be determined prior to construction if minimum coverage of utilities
will be maintained upon completion of work)
Drainage calculations signed and stamped by an Alabama licensed PE
Stormwater detention is designed and shown
________ Provide orifice details and storage depth elevation
________ Provide overflow weir and minimum freeboard details
Detention pond maintenance responsibility must be clearly stated on the
plans. Where a property owners association is responsible, such an
agreement must be recorded prior to final acceptance of the plans.
Engineers evaluation that the receiving stream or storm drainage system can
handle the additional flow
Tie to the City’s stormwater system underground or explain why this cannot
be done.
Sedimentation and erosion control plan (must be detailed and site specific)
Location of silt fence and hay bales
Protection of existing and proposed catch basins
Construction entrance required
Sidewalks are required unless a variance is obtained
Specify curb cuts and sidewalks to City of Semmes and ADA standards
Drainage Narrative meeting requirements of Section 4.1
Drainage map meeting requirements of Section 4.1
Drainage Easements are shown
