This stair framing plan details the layout of hollow structural section members adjacent to existing masonry and concrete walls. HSS12x2x1/4 broken back stringers run parallel to the walls, supported by an HSS6x6x1/4 structural member. Slotted connections are explicitly prohibited at this stair assembly.
HSS12X2X1/4 (BROKEN BACK STRINGER) HSS12X2X1/4 (BROKEN BACK STRINGER) HSS6X6X1/4 A1 S210 SIM. DO NOT USE SLOTTED CONNECTIONS AT THIS STAIR A4 S210 A6 SHB210 B6 SHB210 (E) MASONRY WALL (E) CONCRETE WALL
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