The document discusses precast concrete pile driving methods and risk assessment. It describes precast concrete piles as prefabricated, high-strength columns driven into the ground by a hammer. Various pile driving methods are discussed, including hydraulic static pile drivers, diesel hammers, air hammers, and vibratory hammers. The advantages and disadvantages of each method are provided. Risks of hydraulic static pile drivers include issues with the driving mechanism, rig overturning, wire ropes breaking, and moving/hydraulic/electric system maintenance. Mitigation strategies include soil testing, monitoring construction sites, and having contingency plans.

1. Presentation
On
Presented By:
Md. Zamirul Islam(1423044)
Precast Concrete Pile Driving Method
And Risk Assessment
Course Teacher
Mizanoor Rahman
Lecturer, BECM, KUET

2. Precast Concrete Pile
Prefabricated
High-strength Prestressed
Concrete Column
Driven by Hammer.

3. Advantages of Pre-cast Piles:
Very Effective on Site
Simple Quality Control
Simple to Make
Disadvantages of Pre-cast
Piles:
Limited in Length
Difficult to Transport
Not Suitable for Densely Built
Up Area
Requires Costly Equipment

4. Pile Driving method
Hydraulic Static Pile
Driver
Diesel Hammers
Driving
Air Hammers
Driving
Vibratory Hammers
Driving
Air Hammers Driving
Diesel Hammers Driving
Hydraulic Static Pile Driver
Vibratory Hammers Driving

5. Hydraulic Static Pile Driver
Advantage
Free of noise, pollution and
vibration
High accuracy Cost effective
Without harm of the pile
High blow rate & precise ram
stroke
Disadvantage
High energy needed
Reliability of electricity
Welding and cutting
Hydraulic Static Pile Driver

6. AIR PILE HAMMERS
Advantage
No Electricity
No Electronic
No Hydraulic Leak
Easy Handling,
Low Maintenance And
Operating Costs
Noise-proof Covers
Disadvantage
Expensive
Relatively Slow Operate
Driving Skill Need

7. Driving Diesel Hammers
Advantage
– Self contained driving pile
hammer
– Simpler and easier to move
– Requires no external source of
energy
– Economical to operate
– Easy maintenance
Disadvantages
– Very Difficult To Determine Blow
– May Not Operate Well In Soft Soil
– No Of Strokes is Less Than Steam
Hammer
– Length Is Slightly Greater

8. Vibratory Hammers Driving
Advantage
 Used In Commercial Pile
Construction
 Movement Of Shaft
Eliminates Horizontal Thrust
Less Energy But More Blows
Easier Than Most
Conventional Technologies
Operating Time And Costs
Cut Down
Disadvantage
External Power Pack
Severe Ground Need

9. Hydraulic Static Pile Driver risk
- Driving mechanism
- Rig overturning due to an
unstable - ground surface
- Wire rope-broken wire or
pile
- Moving mechanism

10. - Crane operating drive pile
move
- Hydraulic system
maintenance
- Electric system maintenance

11. Risk mitigation
-
2
3
Ratio Pile Pick Up
- Led Screen For Showing The Piling
- Soil Test Report Corrected
Led Screen
2
3
Ratio Pile Pick up

12. - Monitoring in Construction
Site
- Contingency Plan