An apparatus for supporting one or more pipes is disclosed. The apparatus includes a first tower, a second tower, and each tower includes four vertical columns, and a first set of horizontal beams. Each beam is configured to span and connect two of the vertical columns via biaxial moment connecting collars. The towers are aligned to support a first pipe on beams from both towers along a primary pipe support axis, and none of the columns in the first tower is connected to a column of the second tower by a biaxial moment connecting collar.