Water main replacement and fire protection upgrade for a condominium community in Hallandale Beach

What the project was

A condominium community in Hallandale Beach, in Broward County, needed its water distribution system replaced and its fire protection brought up to current coverage. The community is built out and occupied: four condominium groupings of multi-unit buildings, with private drives, parking and a tennis court between them.

RSP designed the replacement water main, the service connections to each building, the fire hydrant layout, and the paving and marking work that follows from opening up a site like this. The project went through Broward County's environmental review before a building permit could be sought.

The constraint

The governing constraint came from the approval itself. Broward County's environmental review approved the work as site work and water piping only, with no sewer line work, and recorded asphalt resurfacing with the explicit condition of no additional square footage of asphalt paved area. That is a real design limit rather than a formality: a project that opens trenches across a site and then restores it is very easy to finish with more pavement than it started with, and here the area had to come back the same.

The second constraint is the one common to any utility replacement in an occupied community. Residents need water throughout, and fire protection cannot lapse while hydrants are being changed. Existing hydrants are therefore marked individually for replacement or retention rather than being swept away as a set, and the old main is abandoned in place rather than excavated, which avoids a second round of trenching through finished surfaces purely to remove a pipe that is no longer doing anything.

The third is geometric. The buildings are long and close together, so the main has to find a route that stays clear of structures, parking and the existing overhead electric, while still passing near enough to each building to make a short service connection and near enough to the drives to keep hydrants reachable.

What the work involved

The new distribution system is 2,533.5 linear feet of 8-inch PVC in seventeen runs, routed around the community and connected to the existing public main through a 16-inch tapping sleeve and an 8-inch tapping valve. Tapping into a live main under pressure, rather than cutting it, is what lets the connection be made without taking the supply down.

Each multi-unit building takes a two-inch PVC service off that main. The existing backflow preventer at the point of service remains, so the community's protection arrangement with the utility is unchanged by the work.

Fire protection was designed by coverage rather than by replacement count. The fire protection sheets draw a coverage arc around every hydrant, existing and proposed, so the layout can be read as a question of whether each building falls inside one. Some existing hydrants are marked to be removed and replaced in position, two are kept, and new hydrants are added where the arcs leave a gap. Hydrants are specified to deliver a minimum of 1,250 gallons per minute at the required residual pressure.

The remaining sheets cover what that work disturbs: a demolition plan for the asphalt removed and the main abandoned, paving and grading with cross sections, and marking and signage including accessible parking and its signage. The set is fifteen sheets, C-1 through C-5.1.

Agencies and approvals

Broward County's Resilient Environment Department issued an Environmental Review Approval Certificate on 1 April 2024 under ER review 000449739, approving the plans under section 27-66 of the county's Natural Resource Protection Code, with the City of Hallandale Beach as the building department jurisdiction.

It is worth being precise about what that certificate is. It is an environmental review approval, not a building permit, and it is specific to the plans and description it names: any change in footprint or use requires a new approval, and if a building permit is not applied for within ninety days the plans go back to the Urban Planning Division for re-evaluation. It is the gate that has to be passed before the building department will take the work, which is why it sits on the critical path of a project whose physical scope is pipe and pavement.

The outcome

The community has an approved design for a complete replacement of its water distribution system, with fire hydrant coverage demonstrated building by building rather than asserted, and with the paved area returning to what it was.

The transferable point concerns the abandoned main. Leaving a redundant pipe in place is often read as a shortcut, and on some sites it is. Here it is the opposite: excavating it would mean opening the same trenches twice, restoring the same surfaces twice, and - under this approval - doing so without adding a square foot of pavement in the process. The cheapest and least disruptive answer and the one the approval allows are the same answer, which is not always how it works out.