Alpharetta First United Methodist Church

Situation

The growing needs of a thriving congregation at Alpharetta First United Methodist Church prompted a 42,526 square foot expansion of the downtown Alpharetta campus, which began with groundbreaking ceremonies in November 2017. The ensuing construction activities required shoring of the original footprint to prevent damage to existing structures as grading work for new construction proceeded. The placement of underpinning piles allowed excavation to occur below the footing elevation, and earth retention work also required tie-back support with shotcrete walls.

Scope of Work

The shoring of the original footprint required 28 underpinning brackets, while the earth retention used 86 tieback anchors, six new construction piers and more than 2,600 square feet of shotcrete wall surface. The work took place in stages over the course of five months. Before the anchor installation, storm drains were discovered, requiring modifications to location and pitch. The age of the original building - almost 50 years - required extra care in installation.

Soil Conditions

Clay

Anchor System

2 ½ "schedule 40 pipe and 4" schedule 40 pipe - 28 underpinning brackets, 86 tieback anchors, six new construction piers, and more than 2,600 square feet of shotcrete wall surface.

Results

The construction creates a new face for the church on Main and Cumming streets, increases adult classroom space, and adds 10,000 square feet of gathering space, including a new guest services area and a café. The project improves flow throughout the campus and makes the church more accessible for those with mobility challenges.