What are the problems arised in simply supported beam
bridge(any
component of the bridge or steel...
What are the problems arised in simply supported beam
bridge(any
component of the bridge or steel trusses type) and how to improve
the qualities or the problems arised?
This question is referring to a concrete beam with steel rebar
reinforcement,
For a simply supported beam with width 10 inches and depth 14
inches design the steel to resist a maximum moment of 50 kip feet.
span=15 feet. Concrete 4 ksi. steel is 60 ksi.
For analyzing a bridge, bending moment diagrams were plotted
for a simply supported beam of span 5 m when subjected to a
uniformly distributed load of magnitude ‘w’ kN/m over the entire
span. It was noted that maximum bending moment is equal to 37.5
kNm. Suggest a value for ‘w’ based on the requirements. How it will
change the reactions at the supports? What happens to the shear
force and bending moment values at the supports and at the center?...
For analyzing a bridge, bending moment diagrams were
plotted for a simply supported beam of span 5 m when subjected to a
uniformly distributed load of magnitude ‘w’ kN/m over the entire
span. It was noted that maximum bending moment is equal to 37.5
kNm. Suggest a value for ‘w’ based on the requirements. How it will
change the reactions at the supports? What happens to the shear
force and bending moment values at the supports and at the center?...
(1) A simply supported steel beam is 30' long and subjected to a
uniform distributed 1.3 kips per foot. What is the minimum required
section modulus for this beam if we do not want its maximum stress
to exceed 50 ksi?
(2) What is the minimum inertia of the beam in the previous
question if we do not want it to deflect more than 1/2" ?
A 14ft long simply supported beam of A992 steel is laterally
braced only at its ends. It has a uniformly distributed dead load
of 2k/ft. and uniformly distributed live load of 3k/ft. Determine:
Size based on bending.
determine Factored loads, bending moment,
Determine Allowable Bending Moment based on Lb
compare actual to allowable
check deflection with 5wL4/384EI
Check Shear determine Maximum shear Vu compare to allowable
.6FyAwCv
STEEL STRUCTURES
A 20ft long simply supported beam is made of W21X55 with
fy=50ksi. The service distributed loads on the beam are DL=2k/ft
(including self weight), LL=4 k/ft. Show if the beam is adequate
for shear.
A beam 3m long is simply supported at its ends. The beam is
loaded with a downward vertical load of 200N at a point 2m from the
left support.
USING AMM.
a.) The maximum deflection is located at what distance from the
left support? Answer: 1.63m
b.) Calculate the maximum deflection assuming E = 50 GPa and I =
1x10^6 mm4 Answer 2.9mm
Consider a concrete beam in an interior environment as follows:
a. The beam is simply supported with a design span of 4.8 metres.
b. The dead load in the beam is uniformly distributed. c. Dead load
on the beam, in addition to its own weight, is 6.9 KN/m of which
75% is permanent (long term). d. The beam carries a single
concentrated live load at mid-span of 70 KN. e. 20% of the live
load is considered short term. f....