Feasibility of fiberglass-reinforced bolted wood connections / Daniel F. Windorski, Lawrence A. Soltis, Robert J. Ross.

Format:

Book

Government document

Author/Creator:

Windorski, Daniel F., author.

Soltis, Lawrence A., author.

Ross, Robert J. (Robert Jon), author.

Contributor:

Forest Products Laboratory (U.S.), issuing body.

Series:

Research paper FPL-RP ; 562.

Research paper FPL-RP ; 562

Language:

English

Subjects (All):

Bolted joints--Testing.

Bolted joints.

Timber joints--Testing.

Timber joints.

Glass fibers.

Strains and stresses.

glass fiber.

fiberglass (composite material).

Physical Description:

1 online resource (10 pages) : illustrations.

Place of Publication:

Madison, WI : United States Department of Agriculture, Forest Service, Forest Products Laboratory, 1997.

Summary:

Bolted connections often fail by a shear plug or a splitting beneath the bolt caused by tension perpendicular-to-grain stresses as the bolt wedges its way through the wood. Preventing this type of failure would enhance the capacity and reliability of the bolted connection, thus increasing the overall integrity of a timber structure and enabling wood to compete favorably with other engineering materials. This research investigated the use of fiberglass reinforcement to enhance the load-carrying capacity of bolted wood connections. A series of specimens were prepared from standard 38- by 89-mm (nominal 2- by 4-in.) lumber from the Spruce--Pine--Fir lumber grouping. Matched specimens were reinforced with one, two, or three layers of bi-directional fiberglass cloth. Resulting test specimens were configured as a connection that was in accordance with current design specifications. A total of 80 single-bolt, double-shear connections were tested; 40 parallel to grain and 40 perpendicular to grain. Results indicate that connection strength increases as the layers of fiberglass reinforcement increase. The largest increase occurred when adding the first layer to the nonreinforced connection. Additional layers increased strength at a decreasing rate. The ultimate strength of a three-layer reinforced connection was 33 percent greater than the nonreinforced connection for parallel-to grain loading and more than 100 percent for perpendicular-to-grain loading. More importantly for parallel-to-grain loading, the reinforcement changed the mode of failure from an abrupt, catastrophic type associated with tension perpendicular-to-grain stresses to a ductile type associated with bearing stress.

Notes:

"April 1997"--Page 2 of cover.

Includes bibliographical references (pages 7-8).

Description based on online resource, PDF version; title from cover (FS, viewed Feb. 17, 2022).

Electronic reproduction. [Place of publication not identified] : HathiTrust Digital Library, 2015.

Other Format:

Print version: Windorski, Daniel F. Feasibility of fiberglass-reinforced bolted wood connections.

OCLC:

908126291

Access Restriction:

Use copy Restrictions unspecified