Exam (elaborations)
Parcial de diseño de máquinas 2 UIS
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Parcial resuelto de la asignatura Diseño de máquinas 2 de la universidad industrial de Santander
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UNIVERSIDAD INDUSTRIAL DE SANTANDERESCUELA DE ING. MECANICA
DISEÑO DE MAQUINAS II
PROF. GILBERTO PARRA RAMIREZ
JUNIO 15 DEL 2017.
El esquema nos muestra la sección de un piso de una
edificación de área 4X5 mts, soportado por cuatro columnas
en I iguales, en la cual las columnas en I de la edificación
esta soldada a la viga en C, por la superficie exterior del perfil
en C, con una soldadura AWS E7012, según la disposición
mostrada. Calcule el espesor mínimo de la soldadura
requerida si la placa pesa 350 Kgf/ mt2, el mortero y el piso
85 Kgf/mt2. Considere que en cada mt2 de piso la carga
externa debido a las personas y muebles es de 150 Kgf.
Asuma un factor de seguridad de N= 6.
I 300x300x15 mm
C 250x250x15
mm
Viga en C
Columna en I
, 5 mts
Columna en I
4 mts
Viga en C
Hallaremos la carga total:
W=Area x W unidad de area
kgf kgf kgf kgf
W unidad dearea =350 2
+85 2 + 150 2 =585 2
mt mt mt mt
2 kgf
W =( 5 x 4 ) mt x 585 2
=11700 Kgf
mt
La carga en cada viga
11700 Kgf
W viga=
2
5850 Kgf
❑
FL 5850 KGF X 5 MTS
M= = = 770,83
12 12
Kgf-mt
2925 Kgf
2 1
8,33
4,17
3 4
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