The Rowan/338 Potrero, San Francisco

Location: 338 Potrero Avenue, San Francisco
Project Size: 71,500 sq. ft.
Architect: Handel Architects
Project Owner: Trumark Urban
Engineer: Nishkian Menninger
Contractor: Build Group
Concrete supplied by Central Concrete
Slag cement supplied by Lehigh Hanson
2017 Slag Association Awards winner for Architectural Concrete


Designed by Handel Architects, the Rowan utilizes exposed structural cast-in-place concrete as a key architectural design element. Located in the old industrial wing of San Francisco, CA, the Rowan consists of 71,500 sq. ft. of mixed-living and residential space.

A closer look: use of Slag Cement

Slag Cement was utilized in all concrete elements of the 5,200 yd3 structure, replacing 34% percent of the total cementitious material. The footing, column and wall mixes consisted of ternary mixes with 50% replacement of cement to optimize workability and durability. The PT decks and tower crane pad mixes were a blend of Slag and Type III cement to reach strengths of 4000 psi (27.6 MPA) in 2 days.

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