Course Details

Prestressed Engineering Construction

Academic Year 2024/25

NLA031 course is part of 1 study plan

NPC-SIR Winter Semester 1st year

Course Guarantor


Language of instruction



3 credits



Forms and criteria of assessment

course-unit credit and examination

Offered to foreign students

Not to offer

Course on BUT site


13 weeks, 2 hours/week, elective


1. Introduction, basic concept of prestressing. Behaviour of non-prestressed and prestressed concrete beams. Material properties, manufacturing. 2. Prestressing technology, basic terminology. Pre- and post-tensioning prestressed concrete, prestressing systems. 3.–4. Prestressing and its changes. Effects of prestressing on concrete members and structures. Equivalent load method. Design of prestressing using the load balancing method. Influence of the construction metod on design of prestressed structures. 5. General principles of prestress members dimensioning. Ultimate limit state (ULS) of prestressed members loaded by axial force and bending moment, decompression state, initial stress-state of the cross-section. Prestressed members loaded in shear and torsion, stress analysis, proportioning. 6. Analysis of the anchorage zone - stress, calculation model, check of resistance, reinforcement. Serviceability limit states (SLS). Limitation of stress, crack resistence, calculation of crack width. Control of deflection. 7.–8. Design and realisation of selected prestressed structures of building and engineering constructions. 9. Application of prestressing on masonry structures – structural modifications, principles of structural solution and dimensioning. 10. Strengthening of masonry structures by prestressing – methods of strengthening, realisation, structural analysis. 11. Design and construction of general types of slabs and girder bridges. 12. Problems of design and construction of bridges built on the stationary and launch scaffolding, cantilever bridges, incrementally launched bridges. 13. Problems of design and construction of precast girder and segmental bridges.


13 weeks, 1 hours/week, compulsory


1. Effect of prestressing on statically determinate structures. Students are to solved tasks individually. 2. Effect of prestressing on statically indeterminate structures. Students are to solved tasks individually. 3.–4. Project: Design and assessment of prestressed roof girder. Action and combination of loads, design of cross-section, characteristics of materials, types of prestressing steels, structural requirements. 5.–6. Continuation of project. Design of eccentricity and magnitude of prestressing force, design of amount of prestressed strands. 7. Continuation of project. Immediate (short-term) losses of prestress. 8. Continuation of project. Long-term (time dependent) losses of prestress. 9.–10. Continuation of project. Verification of design by serviceability limit state – stress limitation, crack control. 11. Continuation of project. Verification of design by ultimate limit state – bending moment. 12. Continuation of project. Scheme of girder reinforcement by prestressing strands. 13. Project and tasks submission. Credit.