1. By: Clarence Fragoso and Jonathan Lopez
Single Tee
By: Clarence Fragoso and Jonathan Lopez

2. How it is Utilized
It supports the main building keeping it balanced and standing upright at a sturdy position.
Keeps the floor/building intact.

3. Common price Single tees usually cost around $8 per square foot
But on very small projects they can go for $12 to $15 per square foot

4. Common Weight
Single tees usually depend on the size of the building of how big they are but can very from 770plf to 300plf.

5. Who need to know about these topics
The people that are required to know about the single tee slabs are architects and civil engineers.
They need to know how big they are and how much they weigh in order for them to put them in the correct place.

6. Purpose for material
Single tee slabs can be used for most applications requiring a long span floor or roof system depending on required load carrying capability. Single tee slabs are resistant to moisture and corrosion. Parking garages, office buildings, commercial buildings, factories, industrial buildings, etc., are all ideal applications

7. Provide sample of construction work with these systems
Bridges, floor decks, and roofs all contain the single tee presence.
All require this in order for the building to stay standing

8. Sources

9. By: Clarence fragoso and Jonathan Lopez
Pre-tensioning
By: Clarence fragoso and Jonathan Lopez

10. What is pre-tensioning?
A method for concrete to overcome its weakness, which is tension. This method can be applied to beams, floor or bridges with a longer span than is practical with ordinary reinforced concrete.

11. How is it utilized?
The tendons are tensioned against some abutments then put into put in concrete resists it from going back to normal size and is done usually with precast for it to be stronger and wont crack or break easily. This helps the concrete for buildings walls and floor that will be dealing lots of damage.

12. Pre-tensioning common cost?
Prestressed concrete: cost per linear foot.
10” x 30”
$100
12” x 30”
$125
Steel: cost per square foot
Permanent Cantilever Wall
$27
Temporary Cantilever Wall
$16

13. Purpose of material?
The purpose of pre-tensioning the tendons for the precast is for the concrete to become stronger and deal more damage: this allows for the walls and floors to carry more weight

14. Common length and weight?
residential post-tensioned concrete slab will typically be 8 inches thick and use 3000 psi concrete. Once the concrete has gained strength to 2000 psi, typically within the 3 to 10 days recommended by PTI, the tendons are stressed.
Tendons today are seven high-strength steel wires wound together and placed inside a plastic duct. At each end a PT anchor is located and these are located in pockets embedded into the slab edge. When the strands are stressed, the wires will stretch—about 4 inches for a 50 foot strand—to apply 33,000 pounds of load

15. Who needs to know about this process ?
If you are studying to be a construction worker or civil engineer you ned to know the process of pre-tensioning. The owners of the building are also people who need to know what pre-tensioning is

16. Sample of construction work?

17. sources https://www.youtube.com/watch?v=wukFMCir0NY
2US762&source=lnms&tbm=isch&sa=X&ved=0ahUKEwix1Ym8q6DWAh UqxVQKHcn6Bb4Q_AUICygC&biw=1920&bih=970#imgrc=_