Patrick Henry High School

Larson Engineering designed this new one-story, 2,700 s.f. addition with an option for two-story future expansion upwards. The addition is constructed or precast plank roof supported on steel beams and concrete columns, supported on conventional frost footings. The future expansion is assumed to be steel-framed construction with non-load bearing metal stud + brick veneer exterior walls. Future columns will be steel tubes aligned with current columns and wind bracing provided by concentrically braced frames.

There were also HVAC upgrades that required structural analysis and reinforcement of the existing floor and roof structures, in addition to new steel platforms above the existing roof and supported by the existing building beams and columns.

New stage rigging was added above the existing stage, resulting in new steel framing to support the new rigging.

The existing auditorium floor structure was evaluated for an additional 4” light-weight concrete topping to modify the floor slope.

Of particular note was the lateral wind resistance in the north/south direction provided by rigid moment connections between the steel beams and concrete columns. Also, lateral wind resistance in the east/direction provided by the existing building structure.