Hereford High School Systems Renovation

Baltimore County Public Schools performed a feasibility study for the systemic renovation of Hereford High School, located in Parkton, MD. The feasibility study assessed the existing building’s systems for lifecycle replacement and energy efficient replacement options. The renovation consisted of major improvements to the public high school, while occupied.

JMT provided engineering services related to mechanical, electrical, plumbing (MEP) and fire protection associated with the renovation and expansion the school. The renovation is based on the feasibility study, with the MEP portions conducted by JMT. The project incorporated sustainable and energy-efficient building systems such as dedicated outdoor air systems (DOAS) with heat recovery and T-8/28 W lighting fixtures.

The project involved converting the existing school to an air-conditioned facility and replacing existing ventilators and air handling units, as well as upgrading the piping and duct insulation where necessary to support climate control. Existing building exhaust systems were replaced and a new building automation system was installed. A new chilled water system provides cooling capability for the existing building as well as the proposed addition. The heating system pumping system within the existing building was modified to accommodate the new addition.

The existing science rooms were converted to classrooms, which required the demolition of special science facilities such as plumbing and exhaust systems. The fire alarm system was replaced with new addressable components and devices. The system will be designed/configured to handle the addition. Minor electrical upgrades associated with roof-mounted receptacles and GFI receptacles were incorporated into the power/electrical design documents.

The renovated school wings contain numerous efficiency features. The new HVAC system was designed to be more efficient than the prescribed design standard. Toilet room fixtures will be upgraded to include low flow systems. Based on the lighting study conducted by JMT, BCPS changed its lighting standard for all new projects to a high efficiency T8-28W fixture.