26/09/2026
Pile Foundation Fail Kyun Hua? Soil Test Skip
Part 1 me apne crack dekha - 10 Marla house, 2 years old, floor down 1 inch, crack 1 inch, doors jam - Ghar baith gaya
Part 2: Why pile failed? Reason + Soil report + Pile depth mistake - Full detail
Reason 1: Soil Test Not Done - Biggest Mistake
- Owner saved 30,000 PKR soil test fee - Thought "Soil test kya karna, pile kar do"
- Contractor said "Pile 20 ft kafi hai, area me sab 20 ft karte hain"
- No soil report = No one knew hard soil depth
Soil Report (if done) would show:
- 0-10 ft: Soft clay
- 10-25 ft: Medium soft soil
- 25-35 ft: Very soft soil (compressible)
- 35 ft: Hard rock / Hard soil (bearing capacity 15 ton)
- Water table: 15 ft
Hard soil at 35 ft = Pile must go 35 ft to rest on hard rock
Reason 2: Pile Depth Mistake - 20 ft vs 35 ft
- Contractor did pile 20 ft deep - Pile tip in very soft soil (25-35 ft zone), not on hard rock at 35 ft
- Pile hanging in soft soil, not resting on rock = Pile like nail in butter, not in wood
- After 2 years, building load + soft soil compression = Pile sank 1 inch = House settlement = Crack 1 inch
Correct Pile Depth:
- Must be 35 ft to hard rock = Pile rests on rock = No settlement
- Cost extra: 20 ft pile = 25,000 PKR per pile, 35 ft pile = 35,000 per pile = Extra 10,000 per pile x 20 piles = 2 Lakh extra
- Saving 2 Lakh pile depth + 30K soil test = 2.3 Lakh saving = Now 20 Lakh loss