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S/HDB Holdown Bolted

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Description

The S/HDB is designed to provide loads for high-load shearwalls, braced-wall panels and lateral applications and is ideal for bolt-on applications where the cold-formed steel stud manufacturer can prepunch the bolt holes. The holdown features a unique seat that greatly minimizes deflection under load. Designed for installation with bolts into the studs or column.

Key Features

  • Can be installed directly on the bottom track or raised above it and is suitable for back-to-back applications where eccentricity is a concern.
  • Features a unique seat design that greatly minimizes deflection under load.
  • The S/HDB model is designed for installation with bolts. Refer to the S/HDS model for attachment to post/column with screws.

Material

  • See table

Finish

  • Simpson Strong‑Tie® gray paint. Hot-dip galvanized available; see Corrosion Information.

Installation

  • Use all specified fasteners; some models have extra fastener holes. See General Notes.
  • Anchor bolt washer is not required.
  • Standard washers are required on stud bolt nuts for S/HDB models.
  • Thin wall socket (OD = 2″ maximum) is required for S/HD15 to tighten the 1″ anchor bolt.
  • Stud bolts — use A307.
  • Boundary members (back-to-back studs) design shall be by designer.
  • Holdowns can be welded per designer’s recommendation and specification. To tie back-to-back stud members together, the designer must determine the fasteners required to bind members to act as one unit. Welders and welding procedures shall be qualified as specified in AWS D1.3. Welded connections used for cold-formed steel structural members in which the thickness of the thinnest connected part is 0.18 inch or less shall comply to AISI S100 Specification Section E2.
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