INTRODUCTION
A three-story hospital building of dimensions 96×60 ft is to be constructed at Jonesboro, AR. A plan view of the structure is shown in the figure below. The first floor is 15ft high, while the second and the third floors are 12ft high. Floors are 7 inches thick and the roof is 6 inches thick and are made of reinforced concrete. All girders are 40×20 inches and are made of reinforced concrete. First and second floors are assigned Patient rooms while the third floor is assigned for laboratories and operating rooms. Snow load on the roof is 10 psf. Ceilings are covered by suspended metal lath and gypsum plaster. Ceramic tiles on ½ inch mortar bed are used for floor finishing while gravel covered bituminous waterproofing membrane is used for the roof covering. Walls are made of 6 inches thick lightweight concrete blocks and are expected to be located above girders. The reinforced concrete columns are 20×30 inches assuming fixed supports at the base of the columns, students are required to calculate the internal forces and draw the internal force diagrams for all possible load cases for all the members in the structure due to ALL applied dead, live and snow loads according to the LRFD load combinations. For wind load cases only wind blowing in the east-west direction and west-east direction should be considered. In addition, students are required to report the maximum internal forces at all critical sections of each member from the calculated load cases. All detailed calculations and drawings must be included in the report. The final report must be prepared professionally according to the basic format outlined in the Engineering Course Standards document for laboratory reports.
Abstract
Equipment
The project was guided by the instructions provided through the hand out. The data and dimension of the building was found in the ASCE 7 document. The STAAD Pro software was used to host the design and calculations that pertained with the project.
Procedure
By using ASCE 7, we were able to determine the density and loads of the buildings material. Chapter 4 provided the live loads, more detail was provided in chapter 27 regarding the wind load and chapter 3 provided information on the dead load. The loads of the build were simulated on STAAD Pro, in order to provide a realistic analysis on the building capacity.
LOAD CALCULATIONS
The risk category, wind, dead, and live load was determined with the use of ASCE 7.
Live load
There is no live load on the first floor as the building is supported by the ground. The live load on the second floor is 87.5psf, the live supported by the third floor is 87.5psf and the roofs life load is calculated to be 10 psf.
Wind load
There were 8 load cases for the wind load combinations. The loads were simulated on STAAD Pro. On the simulation using STAAD Pro, they are named wind 1, to wind 8.
CONCLUSION
A hospital building, which stands three stories was built in Jonesboro, Arkansans. Design specifications were provided to erect a sustainable and adequate building. Multiple analysis have been run on this building to determine its size, weight, and strength. The LRFD combinations were used to determine the buildings distributed loads. The building was found to have more than 100 load combination cases.