Reinforcement of existing structures
Deteriorated glue laminated tudor arch amputation
Failed tension member (Bottom Chord) - Modified bow string truss
Structural shoring services
Epoxy injection and re-lamination
Field Inspection Services
Furnish & install glue laminated structures

Project Lucky Strike Lanes Project Central Synagogue

 

FAILED TENSION MEMBER (Bottom Chord) - MODIFIED BOW STRING TRUSS

Lucky Strike Lanes- Emerson , NJ

Structural repair of a failed 30 bottom chord section of a 120 modified bow string truss. Shoring was installed to stabilize the structure with minimal disruption to the daily business. The facility continued with all league matches, parties, and open bowling sessions. Care was taken to maintain automatic scoring monitors, all lane surfaces and complete accoustic ceiling removal and replacement.

 
Picture 1 - Typical failure of a tension member (Bottom Chord) on a modified bow string truss. Fracture is seen through the mid section as well as through the bottom face of the chord.

 
   
 
Picture 2 - Close up of failed section of bottom chord mentioned in Picture 1. Note: significant knot sections weakened the chord’s ability to properly transfer tension forces.

 
   
 
Picture 3 - Structural shoring is carefully installed on the lanes. Luan is placed on the lane surface and blocking helps to evenly distribute the loads to the cribbing beneath the lane.

 
   
 
Picture 4 - Complete setup of shoring and scaffolding for bottom chord replacement. Note: minimal disruption to all other areas of the bowling center.

 
   
 
Picture 5 - Close up of shoring supporting truss and ceiling joists above accoustic ceiling grid.

 
   
 
Picture 6 - Failed bottom chord section has been removed and ceiling joists have been cut back to allow installation of new bottom chord section.

Note: Split Ring grooves in existing bottom chord section to remain and actual split rings sit on top of bottom chord.

 
   
 
Picture 7 - New Laminated Veneer Lumber (LVL) will be used to replace failed bottom chord section.

 
   
 
Picture 8 - New LVL is installed and ceiling joists are attached with simpson hangars.

 
   
 
Picture 9 - Close up of web panel point connection with new LVL installed.

 

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