NHI 130055 Final Assessment Exam Questions and
Correct Answers
solid-sawn timber
Generally used in older, shorter span bridges, spanning up to 25 feet
Glulam Beams
Typically simple span designs, and can span up to 80 feet
Stress-Laminated Timber Deck
Used post-tensioned rods or high strength steel threaded rods
Stress-laminated bridge
Simple Spans up to 50 feet and capable of carrying modern highway loads
Timber tee beam
Bridge consists of a stress laminated top flange and Glulam beams
Through Truss Bridge
Deck located between top and bottom truss chords
Deck Truss Bridge
,Deck directly above the trusses
Timber truss bridges
Timber bridge usually spans 150-250 ft
Primary members of multi beam bridges
Beams
Secondary members of multi beam bridge
Diaphragm and cross bracing
Visual inspection
What is the primary inspection method for masonry, timber and FRP
Advanced method
Acoustic tomography and transverse vibration are
What defects do you visually look for in timber
Checks, splits, shakes, fungus decay, crushing, loose connections
Physical inspection for timber
Hammer sounding, pick test, measuring
, Are shear zones mostly located near end of span or mid span
End of span
Compression
An arch is in: tension or compression
The space between masonry blocks is
Shear zone
3 functions of bearing
Transmit loads, permit longitudinal movement of superstructure, allow rotation
4 basically parts common in most bearing
Sole plate, masonry plate, bearing device, anchor bolts
Sliding plate bearing is an example of
Movable bearing
Movable bearing move in what way
Longitudinal and rotational
Typical examples of movable bearing
Roller, rocker, and sliding plate
Correct Answers
solid-sawn timber
Generally used in older, shorter span bridges, spanning up to 25 feet
Glulam Beams
Typically simple span designs, and can span up to 80 feet
Stress-Laminated Timber Deck
Used post-tensioned rods or high strength steel threaded rods
Stress-laminated bridge
Simple Spans up to 50 feet and capable of carrying modern highway loads
Timber tee beam
Bridge consists of a stress laminated top flange and Glulam beams
Through Truss Bridge
Deck located between top and bottom truss chords
Deck Truss Bridge
,Deck directly above the trusses
Timber truss bridges
Timber bridge usually spans 150-250 ft
Primary members of multi beam bridges
Beams
Secondary members of multi beam bridge
Diaphragm and cross bracing
Visual inspection
What is the primary inspection method for masonry, timber and FRP
Advanced method
Acoustic tomography and transverse vibration are
What defects do you visually look for in timber
Checks, splits, shakes, fungus decay, crushing, loose connections
Physical inspection for timber
Hammer sounding, pick test, measuring
, Are shear zones mostly located near end of span or mid span
End of span
Compression
An arch is in: tension or compression
The space between masonry blocks is
Shear zone
3 functions of bearing
Transmit loads, permit longitudinal movement of superstructure, allow rotation
4 basically parts common in most bearing
Sole plate, masonry plate, bearing device, anchor bolts
Sliding plate bearing is an example of
Movable bearing
Movable bearing move in what way
Longitudinal and rotational
Typical examples of movable bearing
Roller, rocker, and sliding plate
