The accompanying figure shows part of a common type of roof trUSs, constructed mainly of timber and steel rods. Determine: a. The average compressive stress in the 8" x 8" diagonal member if the load in it is 25 kips. b. The tensile stress in the 3/4-inch diameter threaded steel rod if the load in it is 5 kips. c. The bearing stress between the timber and the 4" x 4" square steel washer if the hole in it is 7/8- inch

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Part 5. Show complete solutions and appropriate free-body diagrams.

The accompanying figure shows part of a common type of roof truss, constructed
mainly of timber and steel rods. Determine:
a. The average compressive stress in the 8" x 8" diagonal member if the load in it is 25
kips.
b. The tensile stress in the 3/4-inch diameter threaded steel rod if the load in it is 5 kips.
c. The bearing stress between the timber and the 4" x 4" square steel washer if the hole
in it is 7/8- inch
diameter.
d. The bearing stress
between the brick wall
STEEL ROD
(AFEA= 302 IN?)
column and the 8" x 10"
timber if the load in the
column is 18 kips.
e. The length L required to
keep the dashed
portion of the 8" x 10"
member from shearing
off due to the horizontal
STEBL
SHOB
WALL
COLUMN
-WASHEF
4x4"x 5/8"
thrust of 20 kips against
the steel shoe. The
12"
allowable shear stress is
125 ksi.
Transcribed Image Text:The accompanying figure shows part of a common type of roof truss, constructed mainly of timber and steel rods. Determine: a. The average compressive stress in the 8" x 8" diagonal member if the load in it is 25 kips. b. The tensile stress in the 3/4-inch diameter threaded steel rod if the load in it is 5 kips. c. The bearing stress between the timber and the 4" x 4" square steel washer if the hole in it is 7/8- inch diameter. d. The bearing stress between the brick wall STEEL ROD (AFEA= 302 IN?) column and the 8" x 10" timber if the load in the column is 18 kips. e. The length L required to keep the dashed portion of the 8" x 10" member from shearing off due to the horizontal STEBL SHOB WALL COLUMN -WASHEF 4x4"x 5/8" thrust of 20 kips against the steel shoe. The 12" allowable shear stress is 125 ksi.
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