PART I

CONTENT

Structural Engineering 8
Vadims Goremikins, Karlis Rocens, Dmitrijs Serdjuks, Raimonds Ozolins
BEHAVIOUR OF CABLE TRUSS WEB ELEMENTS OF PRESTRESSED SUSPENSION BRIDGE
8
Liga Gaile, Normunds Tirans, Jans Velicko
EVALUATION OF HIGHRISE BUILDING MODEL USING FUNDAMENTAL FREQUENCY MEASUREMENTS
15
Guntis Andersons, Lilita Ozola
EFFICIENCY OF THERMAL DESIGN OF SHALLOW FOUNDATIONS
21
Renno Reitsnik, Harri Lille, Alexander Ryabchikov, Kauni Kiviste
DETERMINATION OF SHRINKAGE STRESSES IN CONCRETE FLOOR COATINGS
31
Rytis Skominas, Vincas Gurskis, Algimantas Patasius
RESEARCH OF MATERIALS SUITABILITY FOR CRACK REPAIR IN REINFORCED CONCRETE STRUCTURES
36
Eduards Skukis, Kaspars Kalnins, Olgerts Ozolins
ASSESMENT OF THE EFFECT OF BOUNDARY CONDITIONS ON CYLINDRICAL SHELL MODAL RESPONSES
41
Liene Sable, Kaspars Kalnins
EVALUATION OF GLASS IN DESIGN OF LOAD BEARING STRUCTURES
46
Mihails Lisicins, Viktors Mironovs, Irina Boiko
BUILDING CONSTRUCTIONS MADE OF PERFORATED METALLIC MATERIALS
53
Liga Gaile, Ivars Radinsh
FOOTFALL INDUCED FORCES ON STAIRS
60
Edgars Labans, Kaspars Kalnins
INVESTIGATON OF WOOD BASED PANELS WITH PLYWOOD AND GFRP COMPOSITE COMPONENTS
69
Janis Sliseris, Girts Frolovs, Karlis Rocens
OPTIMAL DESIGN OF VARIABLE STIFFNESS PLYWOOD- PLASTIC PLATE
75
Galina Harjkova, Pavels Akishins, Olga Kononova
FINITE ELEMENT ANALYSIS OF WEFT KNITTED COMPOSITES
82
Andrejs Kovalovs, Georgij Portnov, Vladimir Kulakov, Alexander Arnautov, Ellen Lackey
ANALYSIS OF INTERFACIAL STRESS BETWEEN COMPOSITE REBAR AND CONCRETE
86
Ulvis Skadins, Janis Brauns
INFLUENCE OF FIBRE AMOUNT ON SFRC PRE- AND POST-CRACK BEHAVIOUR
91
Angelina Galushchak, Olga Kononova
MICROMECHANICS OF ELASTO-PLASTIC FIBER PULL OUT OF ELASTIC MATRIX
99
Arturs Macanovskis, Vitalijs Lusis, Andrejs Krasnikovs
POLYMER FIBER PULL OUT EXPERIMENTAL INVESTIGATION
104
Vitalijs Lusis
TECHNOLOGY FOR CONCRETE SHELLS FABRICATION REINFORCED BY GLASS FIBERS
112
Vitalijs Lusis, Andrejs Krasnikovs
BENDING STRENGTH OF LAYERED FIBERCONCRETE PRISM
117

Construction and Materials
 
Genady Shakhmenko, Diana Bajare, Inna Juhnevica, Nikolajs Toropovs, Janis Justs, Aljona Gabrene
PROPERTIES AND COMPOSITION OF CONCRETE CONTAINING DIVERSE POZZOLANIC ADMIXTURES
122
Nikolajs Toropovs, Diana Bajare, Genadijs Shakhmenko, Aleksandrs Korjakins, Janis Justs
EFFECT OF THERMAL TREATMENT ON PROPERTIES OF HIGH STRENGTH CONCRETE
129
Olga Finozenok, Ramune Zurauskiene, Rimvydas Zurauskas, Linas Mikulenas, Aleksandrs Korjakins, Genadijs Shakhmenko
INFLUENCE OF POLYMERIC ADDITIVES ON THE PROPERTIES OF CONCRETE MANUFACTURED ON THE BASIS OF AGGREGATES PRODUCED FROM CRUSHED CONCRETE WASTE
134
Girts Bumanis, Diana Bajare, Aleksandrs Korjakins
THE ECONOMIC AND ENVIRONMENTAL BENEFITS FROM INCORPORATION OF COAL BOTTOM ASH IN CONCRETE
142
Raitis Brencis, Juris Skujans, Uldis Iljins
ACOUSTIC AND MECHANICAL PROPERTIES OF FOAM GYPSUM DECORATIVE CEILING PANELS
153
Janis Kazjonovs, Diana Bajare, Aleksandrs Korjakins, Ansis Ozolins, Andris Jakovics
ANALYSIS OF SIMULATION MODELS OF PCM IN BUILDINGS UNDER LATVIA’S CLIMATE CONDITIONS
160
Aleksandrs Korjakins, Liga Upeniece, Diana Bajare
HEAT INSULATION MATERIALS OF POROUS CERAMICS, USING PLANT FILLER
169
Martti-Jann Miljan, Matis Miljan, Jaan Miljan
THERMAL CONDUCTIVITY OF WALLS INSULATED WITH NATURAL MATERIALS
175
Marija Masonkina, Kaspars Kalnins
APPLICATION OF ULTRASONIC IMAGING TECHNIQUE AS STRUCTURAL HEALTH MONITORING TOOL FOR ASSESSMENT OF DEFECTS IN GLASS FIBER COMPOSITE STRUCTURES
180
Viktors Haritonovs, Martins Zaumanis, Guntis Brencis, Juris Smirnovs
COMPARISON OF ASPHALT CONCRETE PERFORMANCE USING CONVENTIONAL AND UNCONVENTIONAL AGGREGATE
185
Atis Zarins, Viktors Haritonovs, Juris Smirnovs
INTERPRETATION OF ASPHALT MATERIAL DESIGN PARAMETERS
192
Viktors Haritonovs, Martins Zaumanis, Janis Tihonovs, Juris Smirnovs
DEVELOPMENT OF HIGH PERFORMANCE ASPHALT CONCRETE USING LOW QUALITY AGGREGATES
197
Peteris Skels, Kaspars Bondars, Aleksandrs Korjakins
UNCONFINED COMPRESSIVE STRENGTH PROPERTIES OF CEMENT STABILIZED PEAT
202
Bruno Kirulis, Janis Kreilis, Linda Krage, Inta Barbane, Inese Sidraba
MECHANICAL PROPERTIES OF LOW TEMPERATURE HYDROLIC BINDERS
207

Building and Renovation
212
Arturs Brahmanis, Arturs Lesinskis
INDIRECT EVAPORATIVE PRE-COOLED COMPRESSOR COOLING SYSTEM PERFORMANCE UNDER VARIOUS OUTDOOR AIR HUMIDITY CONDITIONS
212
Sandra Gusta, Gints Skenders
CONSTRUCTION WASTE MANAGEMENT PROCESS IN LATVIA: PROBLEMS AND POSSIBLE SOLUTIONS
217
Peter H.E. van de Leur, Nico P.M. Scholten
DESIGN OF FLOW AND HOLDING CAPACITY OF ESCAPE ROUTES IN BUILDINGS
225
Arturs Macanovskis, Vitalijs Zaharevskis, Andrejs Krasnikovs
NON-DESTRUCTIVE EVALUATION OF FIBER ORIENTATION IN FIBERCONCRETE PRISM
233
Gatis Plavenieks, Arturs Lesinskis
CASE STUDY OF HEAT RECOVERY IN AIR HANDLING UNITS WITH HEAT EXCHANGERS FOR RESIDENTIAL APPLICATION IN LATVIA
240
Nico P.M. Scholten, Harry A.L. van Ewijk
ENVIRONMENTAL PERFORMANCE REGULATIONS IN THE NETHERLANDS
245

Landscape Architecture
250
Una Ile, Silvija Rubene
INTERACTION AREAS OF THE CULTURAL AND HISTORICAL TERRITORIES AND THE SOVIET PERIOD RESIDENTIAL AREAS
250
Natalija Nitavska, Daiga Zigmunde
THE IMPACT OF LEGISLATIVE RULES AND ECONOMIC DEVELOPMENT ON THE COASTAL LANDSCAPE IN LATVIA
259
Lilita Lazdane, Madara Markova, Aija Ziemelniece
REGIONAL STRUCTURE OF CULTURALLY-HISTORICAL LANDSCAPE OBJECTS AVAILABILITY IN LATGALE UPLAND AREA
272
Lukasz Pardela
FLOODING AS A MEANS OF MILITARY DEFENCE: LANDSCAPE OF THE 20TH CENTURY FORTRESS WROCŁAW
283
Aija Ziemelniece
THE ROOF LANDSCAPES, THE HISTORIC CITY CENTRES AND CONTEXTUAL SEARCHES OF THE GREEN STRUCTURE
288

Land Management and Geodesy
299
Vivita Baumane, Armands Celms
EVALUATION OF INDICATORS OF CADASTRAL ASSESSMENT
299
Diana Haritonova, Janis Balodis, Inese Janpaule, Madara Normand
DISPLACEMENTS AT THE GNSS STATIONS
305
Armands Celms, Maigonis Kronbergs, Vita Cintina, Vivita Baumane
PRECISION OF LATVIA LEVELING NETWORK NODAL POINT HEIGHT
310

Environment and Environmental Effects
318
Dace Arina, Ausma Orupe
COMPARISON OF MUNICIPAL SOLID WASTE CHARACTERISTICS AFTER SEPARATION BY STAR AND DRUM SCREEN SYSTEMS
318
Otilija Miseckaite, Liudas Kinciu
FORECAST FOR DRAINAGE RUNOFF AT DIFFERENT THICKNESS OF HUMUS SOIL LAYER
323
Eriks Tilgalis, Reinis Ziemelnieks, Marcis Sipols
CALCULATION OF RAINWATER SEWAGE SYSTEMS
328
Dainius Ramukevicius, Petras Milius
GROUND TEMPERATURE REGIME IN THE COWSHED ENVIRONMENT
332
Raimondas Sadzevicius, Tatjana Sankauskiene, Feliksas Mikuckis
LIMIT DEFORMATIONS OF RETAINING WALLS IN LITHUANIAN HYDROSCHEMES
336

INDUSTRIAL ENERGY EFFICIENCY
 
Anda Kursisa, Laura Gleizde
DEVELOPMENT OF INDUSTRIAL ENERGY EFFICIENCY IN LATVIA, LEGISLATION AND STATISTICS
341
Karlis Grinbergs, Sandra Gusta
ENERGY AUDIT METHOD FOR INDUSTRIAL PLANTS
350
Karlis Grinbergs
ENERGY EFFICIENT ELECTRICITY USAGE AND LIGHTING SOLUTIONS FOR INDUSTRIAL PLANTS
356
Anda Kursisa, Laura Gleizde
ENERGY CONSUMPTION AND ITS REDUCTION POTENTIAL IN LATVIAN INDUSTRY SECTORS
363