Final Design

Costs

During the design process, the variations and ideas that the team had a number of ideas that would require an outside group to ensure the completion of the project. The team spoke to a number of construction companies in the Tucson area and there are a few options that area available. The team approached the companies with rounded dimensions and very base ideas that allowed for the pure costs of materials and labor rather than getting into many details that could ultimately muddle the estimation. When speaking with the consultants, the site was described as a 27500 square foot site with a %2 grade from north to south.

In the team’s experimentation, they spoke to Borderland Construction Co Inc, Lloyd Construction Inc, Pima Quality Construction LLC, and to a number of private companies that the team had personal connections with to ask for guidance in the estimation of the costs. The results of the cost of materials were found at https://azrockexpress.com/products/pricing as a baseline estimate of what we can expect the costs can be.

The team used the cheapest available option for the gravel portion, at $22 per ton of material, while the asphalt would cost close to $2 per square foot with the subbase that is already present at our site. See the design portion of the report for more in-depth work on the set up and design of that portion of the site.

Finally, for the usage in the hydrologic portion of the design, the rip rap material that will be used to slow down the runoff produced from our site is estimated to cost $61 per ton of material and the team is expecting to use around .2 tons of the rip rap.

After the consultation with a number of individuals, our work in the site ended up resulting in an estimated cost of materials of the gravel overlay will be estimated at $18000 and the Asphalt will cost an estimated $23500 whereas the Rip Rap will cost around $10 on material alone.

In this estimation analysis, the cost of labor was not accounted for and so there is a higher and lower end additional cost that must be added alongside the cost of materials.

The cost of the work itself will be determined by the mean values provided by ADOT and the National Park Service, and it lists $14 per cubic yard of cut and fill of sediment with close to $200 per yard of rock to be removed. At this current moment there will be:

• Net 302.37 cubic yards of Fill ​

• $4,233.14​

• Cut 784.20 cubic yards​

• $10,978.82​

• Fill 1086.57 cubic yards​

• $15,211.96​