A full worked distribution network design for a new 420-lot residential development — demand calculations, a looped pipe network sized for fire flow and domestic demand, and a pressure check at the critical point.
The project brief: a new 420-lot subdivision anchored by a 620-student elementary school needs a complete potable water distribution system before the utility will accept it for service — a looped network sized for average day, max day, and peak hour demand, and independently checked against the school's 2,500 gpm fire flow requirement, connected to the utility's existing main at a single point of connection verified with real hydrant flow-test data.
This module walks the whole design the way a real water resources engineer would: worked demand calculations across three peaking conditions, the governing fire-flow-plus-max-day design case, a looped-versus-branched layout decision with real hydraulic consequences, Hazen-Williams pipe sizing at the critical node, and a pressure check against the utility's actual system data. The full worked numbers, complete bill of materials, and finished design reasoning are part of the unlocked module below.