Connectors & Fasteners

Jack Truss Connections To Girder

Question: 

In a hip roof application where jack trusses connect to a girder truss using pressure blocking (power blocking), what is the proper installation and the span that is acceptable before a hanger is required?

Roof Truss Plate Dislodgment

Question: 

I am investigating a roof failure in a 22-year-old structure. The connector plates have peeled open like a banana skin in several instances. The teeth do not appear sheared or torn at the wood surface. However, the plates will be in firm to one member and separated in the other (a gap of about 1/32 in.). Although there are large deformations, the roof is still standing. There was a heavy snow before the problem became apparent. Do you have any insights?

Overdriven Nails in Structural Sheathings - Educational Program

This presentation provides information on overdriven nails in structural sheathing.

Overdriven Nails in Structural Sheathings

All building codes provide provisions for the attachment of structural sheathing to wall and roof framing members. In almost every case, the published capacity of the sheathing and fasteners assume the head of the fastener is flush with the surface of the sheathing. This Research Report discusses guidance when fasteners are overdriven.

Truss Repair - Educational Program

This presentation provides information on and requirements for truss repairs.

Attachment of Residential Deck Ledger to Metal Plate Connected Wood Truss Floor Systems - Educational Program

This presentation provides construction details for residential deck ledger attachment to metal plate connected wood truss floor systems.

Truss Industry Standard of Care Issues: Part 2

The purpose of this article series is to identify truss-related structural issues sometimes missed due to the day-in and day-out demands of truss design/production and the fragmented building design review and approval process. This series will explore issues in the building market that are not normally focused upon, and provide recommended best-practice guidance.

Installation of Interior Gypsum Board Finish

Gypsum wallboard provides an excellent example as to
why accurate design values are so vital to structural design.

Introduction: Why the Interior Finish Installation Is Important

Installation & Fastening of Wood Structural Panel Wall Bracing

  • Use of galvanized box nails may result in shear walls with a shear capacity significantly below the nominal unit shear capacities given in SDPWS.
  • Thus, the majority of WSP shear walls have a shear capacity with a high degree of design value variability. This may have unintended consequences that are unknown and unappreciated by the professional engineering and/or building design community.
  • Once SBCA and SBCRI were certain their testing and engineering analysis was consistent and repeatable, they were persistent in bringing all WSP shear wall performance issues to the attention of APA, AWC, ICC-ES and ICC.  

Truss Storage

  • The contractor should examine the trusses when they are delivered and determine if there is any damage that would impair the structural integrity of the trusses.
  • BCSI recommends that trusses stored outside for more than a week be stacked on blocking and have a cover that provides adequate ventilation.
  • The contractor is responsible for the construction means, methods, techniques, sequences, procedures, programs, and safety in connection with the receipt, storage, handling, installation, restraining, and bracing of the trusses.