Design and analyse prestressed concrete: pretensioned and post-tensioned beams, precast girder bridges with a composite deck, prestressed columns, square precast piles and spun hollow-core PHC piles. Lay out the strands, choose the tendon profile, and see the losses, the stresses at every stage, an interactive stress build-up and Magnel diagram, ultimate strength, shear, camber and traffic deflection — with drawings, a 3D model, the stressing and erection sequence, quantities and a design Excel workbook.
Preliminary design for feasibility and education. Use the strand and anchorage manufacturer's data, a time-dependent analysis, the full traffic models and a grillage for bridges, and wave-equation analysis with PDA for driven piles; have the design checked by a qualified engineer.
What the prestressing studio does
Pick the element — a pretensioned or post-tensioned beam, a precast girder bridge with a composite deck, a prestressed column, a square precast pile or a spun hollow-core PHC pile. Sections are built from real shapes (I-girders, tees, boxes, troughs, rectangles, hollow circles) with strands laid out row by row; the tendon follows a straight, harped, debonded or parabolic profile.
The studio works out the losses (elastic shortening, friction and draw-in, relaxation, shrinkage and creep), the fibre stresses at transfer, deck pour and service along the span against the adopted limits, the number of strands needed, an interactive stress build-up with sliders and a Magnel diagram you can click, ultimate strength by strain compatibility, shear, camber and traffic deflection. Bridges get a design vehicle and lane load with Courbon distribution; columns and piles get N–M interaction with the prestrain, and piles get handling and driving checks. Everything flows into an A3 drawing set, a 3D model, the casting, stressing and erection sequence with hold points, quantities, programme and a design Excel workbook with drawings and buttons.
Beams, girder bridges, columns, square and PHC piles
Losses, stages, interactive Magnel diagram, ultimate and shear