In general polygonal trusses are less economical than bow type with regard to material and labour costs and various types of trusses like circular, cylindrical, hollow etc used for various structures are not much economical because of ir shapes and freeness to work.

The Bridge provides for two 3- lane carriage ways 12.3m each and 2.5m floor paths and cable stayed bridge costing 600 million rupees was found to be cost effective in comparison with or types.

Given section adopted = 50000, prestressing force 471.5kn, using 7mm diameter high tensile wires initially stressed so 1100n/mm²
N = (471.5×10³/38.5×1100) = 11.13.

Flexure loss ratio is 0.8, P = 12000×10³, Area = 0.88 x 106mm²,
f_cp = (?p/A) = (0.8x12000x103/0.88×10⁶) = 10.9n/mm².

The cement content exceeding 475kg/m3 is not permitted unless special consideration has been considered in design to increased risk if cracking due to drying shrinkage in thin sections or to early rmal stresses in thick sections and Indian standard code also prescribes minimum cement content toger with corresponding maximum free water cement ratio for different types of cements when prestressed concrete likely to be exposed to sulphate attack.

The chords and struts of trusses are designed to have same width for convenience in fabricating truss in a horizontal position such that it is protected by external moments and also smoon members.

The polygonal built up from blocks with prestressed bottom chord having wire cable: for 18m ? concrete requirement per truss (m³) 24m-3.85m³, 30m-5.28m³ and difference in truss is observed for different diameters of wire cables.

Post tensioning is ideally suited for prestressing long span girders at site of construction, without need for costly factory type installations like pretensioning beds and segmental construction is ideally suited for post tensioning work and in this method, a number of segments can be combined by prestressing resulting in an integrated structure.

The trusses are analyzed for dead, wind and snow loads applied to joints of top chord and load of suspend mechanical handling facilities is applied at panel points of bottom chord and se loads are analyzed against check for deflection for safety of structure.

The width of various compression and tension members is kept constant at 200-350mm depending upon span of truss and depth of top bottom members which are in compression generally is range of 200-300mm.