Meeting 4/22/2015

Mark Odorizzi, Daniel Synoski, John Vargo                                                                                    

4/22/2015

Group 42 Section 940

Week 4, Meeting 8

Objectives
Check constraints list with Dr. Mitchell

Discuss future steps in design

Learn more about load bearing calculations

Procedure

The meeting began with basic administrative proceedings including greetings and the what we did checklist. Dr. Mitchell made a correction to the units of the load making them 25 lb/sq instead of just 25 lb.

The next step was to go through the design ideas that the group put together in the previous meeting. First we discussed the doodles of potential floor plans and path designs as discussed last meeting. Dr. Mitchell suggest that the group consider more regarding the roof design. There needs to be a gutter and a splash block to avoid soil erosion from the gutter. Another thing to think about is lighting and structure material. How does the light get into the shelter? What is the roof made of? Is it the same material as the walls? Finally, on the design topic, Dr. Mitchell raised the question of subsurface structure. The piers need to extend into the ground and have a footing to spread the compression force into the soil (soil has a compressive strength of 1000 lb/sf) and the wind loads have to hit a supported beam.

This brought the discussion to a strength of materials lecture. Dr. Mitchell provided the equation σs  = M / I where σs is the maximum stress of a material, M is the moment, and I is the moment of inertia  of the shape. The purpose of the lecture was to get a basic understanding of the theory and expand on it outside of this meeting.

Obstacles

There are more components to the structural analysis than the group had anticipated and the design does not solve for all of the problems originally stated (i.e. rain gutter, water management, etc…). The group foresees struggles regarding calculations.

Progress Against Schedule

The group is on target in terms of the projected schedule. The structural analysis and design may take a few more weeks than scheduled due to inappropriate knowledge of the difficulties.

Goals for Next Meeting

Update design

Continue research on structural analysis