The document summarizes the foundation design recommendations for structures at a 543 megawatt simple cycle power plant in Texas, including a gas turbine, GSU transformers and breakers, and water storage tank. Shallow foundations were recommended for the GSU transformer due to its low weight, while pile foundations were proposed for the heavier water storage tank. Mat foundations were also considered for the gas turbine. The team of engineers presented analysis and calculations to support their foundation type selections and ensure factor of safety requirements were met.
In fluid dynamics, slosh refers to the movement of liquid inside another object (which is, typically, also undergoing motion).
Strictly speaking, the liquid must have a free surface to constitute a slosh dynamics problem, where the dynamics of the liquid can interact with the container to alter the system dynamics significantly. Liquid sloshing strongly influences the directional dynamics and safety performance of highway tank vehicles in a highly adverse manner. Hydrodynamic forces and moments arising from liquid cargo oscillations in the tank under steering and/or braking maneuvers reduce the stability limit and controllability of partially-filled tank vehicles. Anti-slosh devices such as baffles are widely used in order to limit the adverse liquid slosh effect on directional performance and stability of the tank vehicles.
In fluid dynamics, slosh refers to the movement of liquid inside another object (which is, typically, also undergoing motion).
Strictly speaking, the liquid must have a free surface to constitute a slosh dynamics problem, where the dynamics of the liquid can interact with the container to alter the system dynamics significantly. Liquid sloshing strongly influences the directional dynamics and safety performance of highway tank vehicles in a highly adverse manner. Hydrodynamic forces and moments arising from liquid cargo oscillations in the tank under steering and/or braking maneuvers reduce the stability limit and controllability of partially-filled tank vehicles. Anti-slosh devices such as baffles are widely used in order to limit the adverse liquid slosh effect on directional performance and stability of the tank vehicles.
For understand the quality in construction work.
For learn about estimating process of cast in situ pile.
For Know the construction procedure of cast in situ pile.
For cheek the preferable condition of cast in situ pile.
For know the construction materials type of cast in situ pile.
IUBAT
IUBAT- International University of Business Agriculture and Technology.
Culvert Design 201 Structural Design, Durability & ApplicationsPath Marketing Inc.
Randy McDonald, Armtec Drainage’s Director of Engineering and Frank Klita, Senior Sales Representative build on the basics of culvert design covered in Culvert Design 101 and will focus in- depth on the structural design of culverts. Additionally, the presenters will review considerations and best practices for culvert installations.
You'll Learn:
Culvert types & applications
- Structural design of culverts and buried structures as per CHBDC (Canadian Highway Bridge Design Code) methods
- Installation best practices
- Review of applications across Canada
For understand the quality in construction work.
For learn about estimating process of cast in situ pile.
For Know the construction procedure of cast in situ pile.
For cheek the preferable condition of cast in situ pile.
For know the construction materials type of cast in situ pile.
IUBAT
IUBAT- International University of Business Agriculture and Technology.
Culvert Design 201 Structural Design, Durability & ApplicationsPath Marketing Inc.
Randy McDonald, Armtec Drainage’s Director of Engineering and Frank Klita, Senior Sales Representative build on the basics of culvert design covered in Culvert Design 101 and will focus in- depth on the structural design of culverts. Additionally, the presenters will review considerations and best practices for culvert installations.
You'll Learn:
Culvert types & applications
- Structural design of culverts and buried structures as per CHBDC (Canadian Highway Bridge Design Code) methods
- Installation best practices
- Review of applications across Canada
1. Simple Cycle Energy Center
Core Engineering Consultant
Arlington, Tx
Dec 12, 2015
Team of Engineers
Ali Shafikhani
Haroon Rasheed
Mohammed Muqtadar
Chhokila Lama
Sandeep Shah
Tenzing Lama
1
2. Project Outline
● Project Introduction
● Scope: Foundation Design
● Conclusion and Recommendations
● References
➢Turbine
➢GSU Transformers and
Breakers
➢ Four Water Tank
2
Speaker: Ali Shafikhani
3. Introduction
Plant Layout
3Speaker: Ali Shafikhani
543 megawatt simple cycle gas fired electric generating facility in
Maverick County, Texas
Water
Tanks
GSU Transformers &
Breakers
Turbines
4. Foundation Design
A TM2500 Gas Turbine
GSU Transformers and Breakers
A Water Storage Tank4
Speaker: Ali Shafikhani
6. Mat Foundation Design
(for 90% of loads)
●Strong sand layer over weak clay layer
Eliminating the top clay layer.
Speaker: Ali Shafikhani
Foundation dimension: 23*64 (ft) with huge safety factor
6
7. Mitigation of Turbine Vibration
loading Effect
Application of light weight high compressive strength geofoam blocks as structural
void fill material (Ɣ=0.7-2.85 pcf).
- To mitigate destructive vibration loading effect.
- In order to design a lightweight mat foundation to prevent subsequent
settlement.
- To make a cost effective design.
- To decrease construction time period.
Speaker: Ali Shafikhani
Resource:
(https://hayfieldhouse.wordpress.com/category/foundation/)
Resource: (http://cenews.com/article/9649/geofoam-a-lightweight-fill-
alternative)
7
8. Lightweight foundation on
expansive soil
8
Expansive soils:
- High settlement and swelling potential during seasonal rainfall.
- Load concentration motivates this settlement and swelling effect.
- differential settlement will occur.
9. Mitigation of Swelling effect of top
Clay layer
Speaker: Ali Shafikhani
Deep foundation dimension: 16*3*5 (ft)
(Resource: Chen (1988), O’Nill (1988))
9
10. Combined Footing
●Strong clay layer over weaker sand layer
Speaker: Ali Shafikhani
Foundation dimension: 4.5*10 (ft). F.S>4
10
11. Elastic Settlement
Mat Foundation and Combined Footing:
● Sand layers:
● Clay layers:
● Mat Foundation: Se= 0.68 (in)
● Combined Footing: Se= 0.36 (in)
Speaker: Ali Shafikhani
11
13. Storage Tank
Water 50,000 gal
Height of Steel Tank = 50 ft
Tank Thickness = 1.5 in
Structural load = Tank + Water
=
418 kips
Bore log 2
Speaker: Sandeep Shah 13
14. ●2 X 2 Group Pile
●Length of Piles= 20 ft
●Circular Concrete Pile
●Diameter = 1.5 ft
●Spacing (S) = 2.5 D
Dimensions
Speaker: Sandeep Shah
14
15. Pile Capacity
●Tip Resistance (Sand layer) Qp = 319 kips
(Meyerhof’s Method)
●Skin Resistance (Clay+Sand) Qs = 74 kips
(Alpha & Meyerhof)
●Ultimate bearing Capacity of 4 piles without the
group effect Qu = 1572 kips
●Group efficiency = 1.11 (Piles behave individually)
●Ultimate load bearing capacity of the group pile
Qg(u) = 1572 kips
●F.S. = 3, Qall = 524 kips > 418 kips
Speaker: Sandeep Shah 15
16. Settlements
●Elastic Settlement
➢ Individual= 0.180 in
➢Group piles = 0.33 in
● Consolidation Settlement
➢ Group = 1.15 in
Total Settlement = 1.48in <1.5 in
● Pile Cap
➢ Dimension=6ft X 6ft
➢Thickness=3.3 ft.
➢ Weight= 17.8kips
Group Pile
Weight of 4 piles = 21.2 kips
Speaker: Sandeep Shah 16
18. GSU TRANSFORMER
ASSUMPTIONS:
● Pressure bulb reaches a depth of 2B (12’)
● The three layers from the depth of 4’ to 16’ are
considered to be one sandy layer with a ᶲavg of
34⁰ and ϒavg of 115 psf
18
Speaker: Haroon Rasheed
21. GSU BREAKER
Properties of GSU Breaker
Dimensions
•Length : 92” = 7.6’
•Width : 78” = 6.5’
Weight
•Weight with gas - 11180 lbs.
•Weight less gas - 10910 lbs.
21Speaker: Haroon Rasheed
22. GSU BREAKER
ASSUMPTIONS:
● Pressure bulb reaches a depth of 2B (12’)
● The three layers from the depth of 4’ to 16’ are
considered to be one sandy layer with a ᶲavg of
34⁰ and ϒavg of 115 psf
22Speaker: Haroon Rasheed
24. Conclusion & Recommendation
● Shallow Foundation is the best type of foundation to be considered for
the transformer
● The load of the transformer is less therefore foundations such as pile
foundation and mat foundation are not recommended
● Geo form is used as an anticipate to fill the voids between reinforcing
bars and a part of foundation as it increases compressive strength and
absorbs the vibration of GSU
● For the water storage tank, Pile Foundation is Recommended
24
Speaker: Haroon Rasheed
Turbine GSU Transformer &
Breaker
Water Storage Tank
Mat Foundation Shallow Foundation Pile Foundation
25. References
●"Highland Tank - Steel Storage Tanks." Highland
Tank - Steel Storage Tanks. N.p., n.d. Web. 06 Dec.
2015.
●Das, Braja M. Principles of Foundation
Engineering, SI, Stamford, CT: Cengage Learning,
2011, Print.
25Speaker: Haroon Rasheed