Home 2 – Meritage Homes
The Meritage Homes plan provided shows a 35’ x 52’ plan with two floors. It is a 3 bed/ 3 bath home with a garage and no basement. Using the guidelines in the loading design overview, the overall loadings on the house were calculated. These results can be found in Figures D4, D5, and Table E2. The dead load on the slab was found to be 65 psf and the live load on the slab was found to be 95 psf.
Using the excel sheet explained in the slab design overview the floor plan found in Figure F3 was found to be an appropriate layout for the slab. The slab was found to be 5 inches thick with 2’ x 2’ drop caps at each column. The slab design also includes additional rebar reinforcing for both the column strips and middle strips of the elevated slab. The development length necessary is a maximum 4 feet on both the top and the bottom, thus a 10-foot bar would be more than adequate. The average bar area for the column strip was approximately 10 square inches, and for the estimate 10 – #9 bars were chosen. For the middle strips, about 4 square inches were required, thus 10 – #6 bars were chosen. There are 41 column strip instances (top and bottom) and 29 middle strip instances (top and bottom) in the slab. These numbers were used for the rebar cost estimate.
The piers were designed in accordance with the pier design overview. In the end, the smallest diameter that the team could come up with was 1.7 ft in order to pass all checks. The pier is 24 ft below ground in order to get a 4-foot embedment length in the rock assuming bedrock is at 20 ft. The sheet requires 5.34 square inches of vertical reinforcement within the pier, therefore 6 – #9 bars were selected for each pier. A diagram of the pier design can be found in Figure G2.
Figure D4. Main Floor Meritage Homes Loading
Figure D5. Upper Floor Meritage Homes Loading
Table E2. Meritage Homes Loading
| Main Floor (sq ft) | Upper Floor (sq ft) | Dead Load (lbs) | Live Load
(lbs) |
|
| Floor Area | 1820 | 1820 | 43680 | N/A |
| Garage Area | 465 | N/A | 6975 | 18600 |
| Wall Area | 194 | 273 | 3736 | N/A |
| Roof Area | N/A | 1820 | 27300 | 54600 |
| Living Area | 1150 | 1327 | 37155 | 99080 |
| Sum | — | — | 118,846 | 172,280 |
Figure F3. Slab Design for Meritage Series Homes
Figure G2. Meritage Homes Pier Design