Course code BūvZ3109

Credit points 1.50

Wooden and Plastic Structures I

Total Hours in Course40

Number of hours for lectures8

Number of hours for seminars and practical classes4

Number of hours for laboratory classes4

Independent study hours24

Date of course confirmation10.03.2021

Responsible UnitInstitute of Civil Engineering and Wood Processing

Course developers

author prof.

Lilita Ozola

Dr. sc. ing.


Elīna Strode


author lect.

Dana Puzānova

Mg. sc. ing.

Prior knowledge

BūvZ2007, Building Materials I

BūvZ2040, Structural Analysis I

BūvZ3078, Structural Analysis II

BūvZ3093, Actions on Building Structures

Replaced course

BūvZB023 [GBUVB023] Wooden and Plastic Structures I

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.

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. Attendance of lectures, Laboratory works.
• 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. Test, conversation.

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 1 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. 1 h
6 Timber decking and lathing. Rafter systems. 1 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. 1 h
9 Synthetic glues and glued connections. 1 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. 1 h
15 Types of roof girders. 1 h
16 Structural and chemical measures for protection of timber structures against decay and fire. 1 h

Requirements for awarding credit points

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.

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

Criteria for Evaluating Learning Outcomes

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).

Compulsory reading

1. Timber Frame Construction. Revised by H. Twist and R. Lancashire; edited by B. Keyworth. 4th ed. High Wycombe: TRADA, 2008. 263 p. 2. Timber Engineering. Edited by S. Thelandersson, H. J. Larsen. Chichester etc.: John Wiley & Son, 2003. 446 p. 3. Ozola L. Koka būvkonstrukciju aplēse un konstruēšana I. Jelgava: LLU, 2008. 259 lpp. 4. Larsen H., Enjily V. Practical design of timber structures to Eurocode 5. London: Thomas Telford, 2009. 268 p.

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. Manual for the design of timber building structures to Eurocode 5. The Institution of Structural Engineers, TRADA. London: Institution of Structural Engineers, 2007. 258 p. + 1 CD 3. 3. Göggel M. Bemessung im Holzbau. Karlsruhe: Bruderverlag, 2000. 2 CD-ROM.

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.


Compulsory Course for the Professional Bachelor’s study programme “Civil Engineering” and for the Second level professional higher educational programme “Civil Engineering”