A structural steel leg strengthening connection occurs at the base of a wide flange and southwest leg assembly. A galvanized hollow structural section measuring 10x6x3/8 is fitted with a galvanized 1/4-inch cap plate and seal weld, bearing onto an existing wide flange beam and base plate connection. Galvanized shim plates measuring 2-1/2 inches by 7 inches and 6 inches by 12 inches are provided as required to clear existing tie plates. Additional structural steel plates, including a 5/8-inch by 6-3/4-inch plate and a 1/4-inch by 9-inch by 2-foot plate located behind, are connected using field-installed erection bolts and fillet welds ranging from 3/16-inch to 5/16-inch sizes. Four galvanized 1/4-inch stiffener plates are aligned with the short side of the hollow structural section across two locations. All new steel is specified to be hot-dip galvanized, and weep holes are required in the ends of exterior closed sections.
3/16 TYP. EACH SIDE OF HSS TYP. NOTES: 1. FIELD VERIFY ALL DIMENSIONS 2. PROVIDE WEEP HOLES IN THE ENDS OF EXTERIOR CLOSED SECTIONS (E) TIE PLATE, TYP. GALV. 2 1/2"x7 SHIM PLATE w/ THICKNESS AS REQ'D. TO CLEAR (E) TIE PLATES TYP. GALV. PL 5/8x6 3/4 AS. REQ'D. (E) GUSSET PLATE (E) BASE PLATE CONNECTION (E) WF BEAM TYP. GALV. 1/4" STIFFENER PLATES ALIGN w/ SHORT SIDE OF HSS ((2) LOCATIONS (4) PLATES TOTAL) 3/16 TYP. 3/16 3/16 3/16 3/16 TYP. (E) CHANNEL, TYP. GALV. HSS10x6x3/8 w/ GALV. 1/4" CAP PLATE w/ SEAL WELD GALV. 6"x12" SHIM PLATE GALV. PL 1/4x9x2'-0" (BEHIND) GALV. PL 3/8x9x AS REQ'D. GALV. W12 ERECTION BOLTS AS REQ'D. 5/16 TYP. 5/16 TYP. 5/16 TYP. 3/16 5/16 (3/16) NOTES: 1. FIELD VERIFY ALL DIMENSIONS 2. PROVIDE WEEP HOLES IN EXTERIOR CLOSED SECTIONS 3. HOT DIP GALVANIZE ALL NEW STEEL 5/16 TYP. 5/16 TYP. 3/16 TYP. 1" = 1'-0" S2.6 SECTION AT BASE OF W AND SW LEG STRENGTHENING 3
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