Hospital Atrium Space Frame - Linear Temperature Gradient Using Limiting Temperature

L150ft X W150ft X H 40ft

Bracing & Deflection control X axis every 25ft
Bracing & Deflection control Y axis every 18.75ft
Vertical Spacing of Lattice Section : 3ft


Beams: 12X22
Bracing: WT5x11
Columns: W24x55

Loads are uniform along beams .02k/in. This load is due to architectural glass roof installation. (6.4psf).

Deflection mode diagram. Frame subjected to all initial loads inclusive to the temperature gradient using FEA Model SAP2000.

Temp Gradient Input method in SAP2000 (linear: in, F):

Ambient 20 C
Limiting Temperature 570 C

Change is Ttop-Tbottom = 20-570 C = -550 C = -1022 F

Height of Cross Area = 12"

Gradient = -1022 / 12" = -85.2 F/in
-along 2-2 axis for floor to ceiling: beams
-along 3-3 axis for center room outward: columns

*** Response modeled is only physical expansion due to thermal stress.

Category:

Science & Technology

Tags:

• Hospital
• space
• frame
• 3d
• modeling
• sap2000
• failure
• mode
• structural
• fire
• safety
• temperature
• gradient
• conduction
• convection
• radiation
• engineering
• elasticity
• modulus
• yielding
• beams
• columns
• architectural
• glass