unshored superstructure - dandina

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ABBEY ROAD ENGINEERS QUAN DAO RUTHWIK CHEPURI VISHAL SONI PAWAN K DANDINA UNSHORED CONSTRUCTION PAWAN K DANDINA

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Page 1: Unshored Superstructure - Dandina

 

ABBEY ROAD ENGINEERS 

QUAN DAO 

RUTHWIK CHEPURI 

VISHAL SONI 

PAWAN K DANDINA 

 

UNSHORED CONSTRUCTION  

PAWAN K DANDINA 

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SUMMARY Length: 

Superstructure = 620’ 

End Segments: 140’ X 2 

Over – Pier Units: 100’ X 2 

Drop – in Units: 140’ X 1 

 

Depths: 

End Segments: Modified TX 70 (+2” top flange, 10” web, Widened non‐shoring ends) 

Drop – in Unit: Modified TX 70 ((+2” top flange, 10” web) 

Over – Pier Unit: Modified TX 70 with haunch (max depth = 100”) (+2” top flange, 10” web, 

linear: 72” @ 0’  100”@ 45’‐55’  72” @ 100’. 

Deck = 8” (throughout) 

Material Properties: 

Girders: 10 ksi. 

Deck: 4 ksi. 

Pre‐tensioning: 0.6” ϕ – low relaxation steel strands of Fu = 270 ksi. 

Post‐tensioning: 7 – wire strand (tendon) with Fu = 270 ksi. 

 

0.6" Φ ‐ low relaxation steel strands 

PRE‐TENSION

END UNIT 

OVER‐PIER UNIT 

DROP‐IN 

UNIT 

 

top  4  28 4

bottom  44  18 44

total  48  46 48

7 ‐ WIRE STRAND (TENDON) 

POST‐TENSION   

END UNIT 

OVER‐PIER UNIT 

DROP‐IN 

UNIT 

 

STAGE 1  38  38 38 (2 ducts) 

STAGE 2  19  (1 duct)  

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