Structural and design concepts

anuraadha

@anuraadha-57t1B5 • Oct 26, 2024

Oct 26, 2024

989

This thread is dedicated to all concepts and basic formula in analysis and design of a structure.😀

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anuraadha

@anuraadha-57t1B5 • Apr 14, 2011

when a simply supported beam is acted upon by a concentrated load (W kN) at the centre and uniformly distributed load (w kN/m). the shear force and bending moment is as shown
anuraadha

@anuraadha-57t1B5 • Apr 14, 2011

Sign conventions for a beam
CIVILPRINCESS

@civilprincess-308hDv • Apr 14, 2011

for the cantilevered beams the loading conditions and the respective SFD and BMD
anuraadha

@anuraadha-57t1B5 • Apr 14, 2011

Always the support reactions are determined by the equation of equilibrium
sum of horizontal forces=0
sum of vertical forces=0
sum of moments= 0
maria flor

@maria-flor-8cAkif • Apr 14, 2011

What do you call the load in parabolic???
anuraadha

@anuraadha-57t1B5 • Apr 14, 2011

I guess you are asking about the shape of beam. when a uniformly distributed load acts on a beam the resulting bending moment takes the shape of parabola.
maria flor

@maria-flor-8cAkif • Apr 14, 2011

nope. We have an exam..the load is already in parabolic and we need to draw the shear and moment diagram....
CIVILPRINCESS

@civilprincess-308hDv • Apr 14, 2011

yeah there is a loading condition where the load is parabolic distributed.
it has no other names it is just parabolic load
CIVILPRINCESS

@civilprincess-308hDv • Apr 14, 2011

if we take the seismic load acting on the vertical face of dam or the forces due to waves they are all parabolically distributed. 😀
maria flor

@maria-flor-8cAkif • Apr 14, 2011

Ah..ok. but, how can I solve that kind of problem???? I never expect it to be on our exam in Strength of Materials.
CIVILPRINCESS

@civilprincess-308hDv • Apr 14, 2011

well i've not solved a parabolic load too. 😔
but i'll refer my books and let you know 😀
maria flor

@maria-flor-8cAkif • Apr 14, 2011

CIVILPRINCESS
well i've not solved a parabolic load too. 😔
but i'll refer my books and let you know 😀
ok. I'll try to post the problem here.
CIVILPRINCESS

@civilprincess-308hDv • Apr 14, 2011

maria flor
ok. I'll try to post the problem here.
yeah do that 😀
anuraadha

@anuraadha-57t1B5 • Apr 18, 2011

The beam formulas under various loading conditions.
anuraadha

@anuraadha-57t1B5 • Apr 18, 2011

statically indeterminate structure - It is a structure where the static equilibrium equations are insufficient for determining the internal forces and reactions on that structure.

Statically determinate structure - [FONT=verdana, geneva, helvetica]It is a structure which can be fully analyzed using the static equilibrium equations.[/FONT] e.g : remove the support B in above figure.
khelagor

@khelagor-XnweZz • May 27, 2011

Thanks Anuraadha!