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Products > T-BEAMS
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OKA PRESTRESSED (PRETENSIONED) T-BEAMS
JKR STANDARD T-BEAMS : PRT1, PRT2, PRT 3 (FOR SPANS UP TO 22M)
OKA MODIFIED T-BEAM : PRT M (FOR SPANS UP TO 28M)
 | | DIMENSIONS & SECTION PROPERTIES | | Item | Unit | JKR STANDARD T-BEAMS | OKA MODIFIED T-BEAM | | PRT1 | PRT2 | PRT3 | PRT-M | | Bridge Span, | LS | m | 18 | 20 | 22 | Up to 28 | | Beam Length | LB | m | 18.6 | 20.6 | 22.6 | Up to 28.6 | | Beam Overall Depth, | H | mm | 1250
| 1350 | 1400 | 1450, 1500,
1550, 1600,
1650, 1700,
1800 | | Beam Web Depth, | hw | mm | 1055 | 1155 | 1205 | 1255, 1305,
1355, 1405,
1455, 1505,
1605
| | Section Area, | A | mm2 | 458,350 | 488,350 | 503,350 | 518, 350 -
623, 350
| | Beam Weight, | w | Ton/m | 1.12 | 1.20 | 1.23 | 1.27 - 1.53 |
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Specifications
| 1. | Prestressing strands : Low relaxation 7-wire strands to BS 5896:1980;nominal diameter 12.9mm (10m span), nominal diameter 15.7mm (> 10m span), | | 2. | Concrete characteristic strength : 50N/mm2, nominal concrete cover : 50mm,
| | 3. | Typical cross beams : end cross beams 400 x 850mm; intermediate cross beams 600 x 850mm at every 9m or less, | | 4. | Customized beam designs upon request. |
TYPICAL SECTION OF CARRIAGEWAY
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