| Statuss(Aktīvs) | Izdruka | Arhīvs(0) | Studiju plāns Vecais plāns | Kursu katalogs | Vēsture |
| Course title | Wooden and Plastic Structure |
| Course code | BūvZB046 |
| Credit points (ECTS) | 5 |
| Total Hours in Course | 135 |
| Number of hours for lectures | 32 |
| Number of hours for seminars and practical classes | 20 |
| Number of hours for laboratory classes | 4 |
| Independent study hours | 79 |
| Date of course confirmation | 12/12/2023 |
| Responsible Unit | Institute of Civil Engineering and Wood Processing |
| Course developers | |
| Dr. sc. ing., Lilita Ozola Mg. sc. ing., pasn. Dana Puzānova |
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| Prior knowledge | |
| BūvZ3093, Actions on Building Structures BūvZB018, Structural Analysis I BūvZB019, Structural Analysis II BūvZB060, Building Materials |
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| Course abstract | |
| The basic knowledge is acquired on strength and stiffness properties, factors affecting of wood and structural plastic materials. Behaviour of structural elements under loads is studied applying limit state method concept. Determination of bearing capacity of connections is acquired including principles of design and experimental tests. General types and rational solutions of wooden and plastic structures are examined. Course project enables for mastering skills in design- some plane frame timber structure (beams, columns, trusses, arches) has been worked out according Eurocode principles. BIM system software is utilized for execution of course project: Axis VM (or Dlubal RFEM) and AutoCAD, as well as MS Excel tools and/or MathCAD. | |
| Learning outcomes and their assessment | |
| Knowledge: about physical-mechanical properties of wood and plastic materials and factors affecting, and related problems in construction, about concept of limit state method for analysis of timber elements and connections. Get knowledge about timber structures, about definition of design model, assessment of unfavourable loading combination and situation, assessment of whole structure, as well as individual its elements for ultimate and serviceability limit state conditions. Attendance of lectures, Laboratory works examination.
Skills: to perform the calculation and design of structural timber elements and joints according limit states method and applying Eurocode 5 methodology. Practical works • Competence: ability to do a good choice of material and sections for structural timber elements and fasteners regarding loading and service conditions. Examination |
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| Course Content(Calendar) | |
| 1.Wood materials for sustainable construction. From history of timber structures. Directions of development 1 h
2 Strength and stiffness characteristics of wood materials, modification and partial safety factors. 1 h 3 Limit state method. Strength and stiffness conditions for solid and glue-laminated timber elements in bending 2 h 4 Strength and stability conditions of ultimate limit state for solid and glue-laminated timber elements in axial loading. 1 h 5 Design of glued composite sections (timber-plywood etc.), calculation details in bending of I-beams. 3 h 6 Timber decking and lathing. Rafter systems. 2 h 7 Double tapered and single tapered glue laminated timber beams. 1 h 8 Types of connections in timber structures. Requirements for mechanical fasteners and joints. 3 h 9 Synthetic glues and glued connections. 2 h 10 Dowel type connections: nailed, bolted, screwed, stapled. 1 h 11 Connections with split ring and shear plate connectors. 1 h 12 Punched metal plate connections. 1 h 13 Mechanically jointed beams: behaviour and design. 1 h 14 Design of built-up columns: spaced and lattice types. 2 h 15 Types of roof girders. 1 h 16 Structural and chemical measures for protection of timber structures against decay and fire. 1 h 17 Plane frames in timber. Geometric stability and instability of plane frames. Definition of design model. 2h 18 Choice of bearing structure correspondingly to span being covered, loading conditions, available materials and manufactures. 2h 19 Built-up berams with mechanical fasteners. 2h 20 Beam type trusses. Types of trusses. General principles for design of timber trusses. 3h 21 Nailed and bolted trusses and the ones with shear connectors in joints. 2h 22 Trusses with punched metal plates in joints. 2h 23 Large span trusses of glue-laminated timber elements with concealed steel plates and dowel type fasteners in joints (dowels and bolts). 2h 24 Three hinged portal frames of solid sections. Two hinged diagonal frames. 2h 25 Three hinged glue laminated timber arches. Two hinged arches with tie beam. 2h 26 Design of support and apex hinges of arches and portalframes. 2h 27 Design of system stability. Design of bracing system. 2h 28 Moment-resisting connections in timber structures 2h 29 Structural plastics, products, properties and using in structures. 2h 30 Pneumatic structures and tents. 1h 31 Introduction for space structures: lattice barrel vaults, ribbed shells, lattice domes, hyperbolic paraboloid shells, towers 2h 32 Assessment of timber structures correspondingly to the criteria of economic, safety and sustainability considerations. 2h Part-time extramural studies: All the topics intended for full-time studies are covered, yet the number of contact hours is ½ of the specified number of hours. |
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| Requirements for awarding credit points | |
| 1.Credit test is passed if: •Laboratory tasks are carried out, and data processed in an individual way by the student, as well as conversation on related topic achievs a positive results. •Student is able to discuss on course content.
2.The theory test must be passed. 3.Examination: two tasks on design af timber elements and connections, and one issue on basic concepts for demonstration of his/her erudition. 4.Prerequisites: elaborated and defended Course Project |
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| Description of the organization and tasks of students’ independent work | |
| 1. Laboratory 1. Test of connection with mechanical fasteners 2. Laboratory
2. Test of structural timber model (truss model, beam model). 3. Test data processing and analysis 4. Theory tests must be completed independently and submitted in e-learning course page |
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| Criteria for Evaluating Learning Outcomes | |
| 1. Credits will be enrolled if the student is able to prove his/her knowledge and competence during constructive conversation about behaviour of elements and joints under static load (according checklist).
2. At least 80% must be scored in the theory test. 3. Examination enables to strengthen a knowledge acquired, to confirm the skills and competence developed. Executing the first task the student testifies his/her ability to perform the simplified calculation procedures of timber elements using limit state method. Executing the second task the student testifies his/her ability to select an appropriate type of fasteners for joining the timber elements in node. The third one is topic from theory regarding basic terms and relationships in timber engineering. |
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| Compulsory reading | |
| 1. Rug, Wolfgang. Holzbau: Bemessung und Konstruktion / Wolfgang Rug, Willi Mönck ; Herausgeber: DIN Deutsches Institut für Normung e. V. - 16., vollständig überarbeitete Auflage. - Berlin: Beuth, 2015. - 794 S.
2. Ozola L. Koka būvkonstrukciju aplēse un konstruēšana III. Jelgava: LLU, 2018. 380 lpp. 3. Manual for the design of timber building structures to Eurocode 5/ revising author, K. Ranasinghe; The Institution of Structural Engineers and BM TRADA. London: The Institution of Structural Engineers; BM TRADA, 2020. |
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| Further reading | |
| 1.Porteous J., Ross P. Designers' Guide to Eurocode 5: design of timber buildings: EN 1995-1-1. London: ICE, 2013. 209 p.
2. Wood composites/ edited by Martin P. Ansell. Cambridge, UK; Waltham, MA: Woodhaed Publishing is an imprint of Elsevier, ©2015.- 437 p. 3. Timber Frame Construction. Revised by H. Twist and R. Lancashire; edited by B. Keyworth. 4th ed. High Wycombe: TRADA, 2008. 263 p. 4. Timber Engineering. Edited by S. Thelandersson, H. J. Larsen. Chichester etc.: John Wiley & Son, 2003. 446 p. 5. Barbero, Ever J.: Introduction to Composite Materials Design/ Ever J. Barbero. Boca Raton, FL: CRC Press, Taylor & Francis Group, 2018, 535 lpp. 6. Cross-laminated timber: design and performance. High Wycombe, Buckinghamshire, UK: Exova BM TRADA, 2017.- 153 p. |
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| Periodicals and other sources | |
| 1. Bauen mit Holz. ISSN: 0005-6545
2. The Structural Engineer. London: The institution of structural engineers. ISSN 1466-5123 3. Būvinženieris: Latvijas Būvinženieru savienības izdevums. Rīga: Latvijas Būvinženieru savienība. ISSN 1691-9262. |
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| Notes | |
| Compulsory Course for the Professional Bachelor’s study programme “Civil Engineering” | |