NHI 130055 Final Exam and All Correct
Answers.
solid-sawn timber - Answer Generally used in older, shorter span bridges, spanning up to 25
feet
Glulam Beams - Answer Typically simple span designs, and can span up to 80 feet
Stress-Laminated Timber Deck - Answer Used post-tensioned rods or high strength steel
threaded rods
Stress-laminated bridge - Answer Simple Spans up to 50 feet and capable of carrying modern
highway loads
Timber tee beam - Answer Bridge consists of a stress laminated top flange and Glulam
beams
Through Truss Bridge - Answer Deck located between top and bottom truss chords
Deck Truss Bridge - Answer Deck directly above the trusses
Timber truss bridges - Answer Timber bridge usually spans 150-250 ft
Primary members of multi beam bridges - Answer Beams
Secondary members of multi beam bridge - Answer Diaphragm and cross bracing
Visual inspection - Answer What is the primary inspection method for masonry, timber and
FRP
Advanced method - Answer Acoustic tomography and transverse vibration are
What defects do you visually look for in timber - Answer Checks, splits, shakes, fungus decay,
crushing, loose connections
Physical inspection for timber - Answer Hammer sounding, pick test, measuring
, Are shear zones mostly located near end of span or mid span - Answer End of span
Compression - Answer An arch is in: tension or compression
The space between masonry blocks is - Answer Shear zone
3 functions of bearing - Answer Transmit loads, permit longitudinal movement of
superstructure, allow rotation
4 basically parts common in most bearing - Answer Sole plate, masonry plate, bearing
device, anchor bolts
Sliding plate bearing is an example of - Answer Movable bearing
Movable bearing move in what way - Answer Longitudinal and rotational
Typical examples of movable bearing - Answer Roller, rocker, and sliding plate
Elastomeric bearing - Answer Bearing uses neoprene pad. Expansion and contraction
achieved through shear
Pot bearing - Answer A type of high load multi rotational bearing. Allows rotation
Load Path Redundancy - Answer A bridge having three or more main load-carrying members.
Internal Redundancy - Answer Creation of multiple load paths by elements that are
mechanically fastened together.
Disk bearing - Answer Bearing allows rotation and May allow translational movement.
Similar to pot bearing. Difference is bearing device
Enclosed bearing - Answer Bearing Cannot adequately be evaluated
Fixed bearing - Answer Restricts horizontal or translational movement. Only allows rotation
Answers.
solid-sawn timber - Answer Generally used in older, shorter span bridges, spanning up to 25
feet
Glulam Beams - Answer Typically simple span designs, and can span up to 80 feet
Stress-Laminated Timber Deck - Answer Used post-tensioned rods or high strength steel
threaded rods
Stress-laminated bridge - Answer Simple Spans up to 50 feet and capable of carrying modern
highway loads
Timber tee beam - Answer Bridge consists of a stress laminated top flange and Glulam
beams
Through Truss Bridge - Answer Deck located between top and bottom truss chords
Deck Truss Bridge - Answer Deck directly above the trusses
Timber truss bridges - Answer Timber bridge usually spans 150-250 ft
Primary members of multi beam bridges - Answer Beams
Secondary members of multi beam bridge - Answer Diaphragm and cross bracing
Visual inspection - Answer What is the primary inspection method for masonry, timber and
FRP
Advanced method - Answer Acoustic tomography and transverse vibration are
What defects do you visually look for in timber - Answer Checks, splits, shakes, fungus decay,
crushing, loose connections
Physical inspection for timber - Answer Hammer sounding, pick test, measuring
, Are shear zones mostly located near end of span or mid span - Answer End of span
Compression - Answer An arch is in: tension or compression
The space between masonry blocks is - Answer Shear zone
3 functions of bearing - Answer Transmit loads, permit longitudinal movement of
superstructure, allow rotation
4 basically parts common in most bearing - Answer Sole plate, masonry plate, bearing
device, anchor bolts
Sliding plate bearing is an example of - Answer Movable bearing
Movable bearing move in what way - Answer Longitudinal and rotational
Typical examples of movable bearing - Answer Roller, rocker, and sliding plate
Elastomeric bearing - Answer Bearing uses neoprene pad. Expansion and contraction
achieved through shear
Pot bearing - Answer A type of high load multi rotational bearing. Allows rotation
Load Path Redundancy - Answer A bridge having three or more main load-carrying members.
Internal Redundancy - Answer Creation of multiple load paths by elements that are
mechanically fastened together.
Disk bearing - Answer Bearing allows rotation and May allow translational movement.
Similar to pot bearing. Difference is bearing device
Enclosed bearing - Answer Bearing Cannot adequately be evaluated
Fixed bearing - Answer Restricts horizontal or translational movement. Only allows rotation
