Type	Bolt connected Steel Warren Truss Type.
Spans	Spans in multiples of Modular unit lengths of 4000mm
Deck	Steel deck constructed from rolled HEA beams welded underneath Chequered Steel plates of multiple lengths of 2000mm. Bridge will have end decks of 500mm to span the distance from end transom to abutment.
Bearings	Distance from centre of bearing to back wall will be 400mm plus provisional spacing for thermal expansion. Max height from abutment to top of deck will be 870mm.
Deflection	Live load deflection under truck loading and taken into account of Eccentricity and dynamic coefficient will not exceed 1/800. The required Bridge Structure will have positive camber.
Weight	Maximum weight of heaviest component, except for decks, will not exceed 250kg. Max. weight of decks will not exceed 300kg.
Fasteners	Fixation by ISO M20 and M24 fasteners of class 8.8 or 10.9.
Loading	Design vehicular loading conform to AASHTO HS 20-44. Design in accordance with Eurocode 3/1995 (*).
Road width	Single Lane with a minimum carriageway width of 3,50m between kerbs;
Main trusses	Main trusses are 2,75mtr high.
Erection	By cantilever method using launching nose and rollers.
Finish	All materials will be hot-dip galvanised, minimum coating 110 micron. Bolts are spun galvanised in accordance with BS 1706.
Tools	Manual tools incl. hydraulic jacks for construction of PSBs are standard supplied in Launching equipment Set. (suitably packed in toolbox).
Manual	Manual by supplier, showing step by step erection procedure and instruction film will be included.
Manufacture	Bridge and all related items will be brand-new manufactured.
Materials	All steel used will be of Fe 510 quality in accordance with Euronorm EN10025 / 1002701 (grade S355J2G3), whereby main truss bearing parts must be of min. 8 mm thickness. Steel used for decks will be of min. Fe 370 quality in accordance with Euronorm EN10025 / 1002701 (grade S235J0).
Fatigue life	The Steel Bridge will be designed for minimum 1.000.000 cycles.
Environment	Bridge will be suitable for the following environments: Temperature: -20 deg.C tot +50 deg.C in shade Humidity: up to 98 percent Rainfall: up tot 400mm1 per annum Wind: up to 240 km per hour
Transport	20ft dry box containers.

SPANS AND MAIN GIRDER CONSTRUCTION AASHTO HS 20-44

The table below gives the maximum allowable spans for the different constructions using HS20-44 loading according to the AASHTO of 1994. The values in this table do not include loads from a pedestrian lane attached to the outside of the main girder. The allowable loads need to be reduced accordingly, depending on the required pedestrian load.

	S *	SW *	EW *	UW *	DL *
Single	24 m	24 m	20 m	20 m	12 m
Single Reinforced	40 m	40 m	36 m	36 m	24 m
Double Reinforced 1	48 m	48 m	48 m	44 m	28 m
Double Reinforced 2	56 m	56 m	56 m	52 m	36 m

* S = Standard
* SW = Standard Widened
* EW = Extra Wide
* UW = Ultra Wide
* DL = Double Lane

SPANS AND MAIN GIRDER CONSTRUCTION AASHTO HS 25-44

The table below gives the maximum allowable spans for the different constructions using HS25-44 loading according to the AASHTO of 1994. The values in this table do not include loads from a pedestrian lane attached to the outside of the main girder. The allowable loads need to be reduced accordingly, depending on the required pedestrian load.

	S *	SW *	EW *	UW *	DL *
Single	20 m	20 m	16 m	16 m	-
Single Reinforced	36 m	32 m	32 m	28 m	20 m
Double Reinforced 1	44 m	44 m	40 m	40 m	24 m
Double Reinforced 2	48 m	48 m	48 m	48 m	28 m

* S = Standard
* SW = Standard Widened
* EW = Extra Wide
* UW = Ultra Wide
* DL = Double Lane

WEIGHTS OF ASSEMBLED BRIDGEPARTS

	S *	SW *	EW *	UW *	DL *
Bay S	2110	2138	2196	2252	-
Bay SR	2888	2916	2974	3030	-
Bay DR1	4618	4646	4704	4760	6597
Bay DR2	5355	5383	5441	5497	7334
End Bay S	2472	2507	2578	2647	-
End Bay SR	3101	3136	3207	3276	-
End Bay DR1	5123	5158	5229	5298	8087
End Bay DR2	5718	5752	5824	5893	8681
Deck	1867	1990	2246	2500	3820
End Deck	224	238	269	299	464
Launching Nose	2020	2035	2085	2130	2415

* S = Standard
* SW = Standard Widened
* EW = Extra Wide
* UW = Ultra Wide
* DL = Double Lane