<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>COST OF CIVIL ENGINEERING WORKS</title>
      <link>https://trid.trb.org/View/1081983</link>
      <description><![CDATA[AFTER DEFINING THE VARIOUS TYPES OF CONTRACTS, THE AUTHOR STUDIES THE PRINCIPLES WHICH GOVERN COST PRICES AND ESTIMATES, AND GIVES AN OUTLINE OF THE ESTABLISHMENT OF TENDERS. THE COST OF THE VARYING ELEMENTS FORMING PART OF THE WORK IS DISCUSSED: GENERAL CONSTRUCTION SITE INSTALLATION, GENERAL CONSTRUCTION SITE COSTS - PREPARATION OF THE TERRAIN - EARTHWORKS - SHEETINGS FOR BUILDING PITS - DEMOLITIONS - SCAFFOLDING - DEWATERING - LOWERING OF THE WATER - TABLE - DRIVING OPERATIONS - PULLING OUT OPERATIONS - METAL  SHEET PILE COFFERDAM - REINFORCED CONCRETE AND CONCRETE FORMWORKS - MANUFACTURE AND APPLICATION OF CONCRETE - REINFORCEMENT - MASONRY - HOLLOW GAUGE BRICKS - ROAD WORKS - SEWERS - HORIZONTAL DRIVING - SUB-CONTRACTED WORK  - EFFECT OF REPETITION ON CONSTRUCTION COSTS.]]></description>
      <pubDate>Sun, 21 Nov 2010 18:57:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/1081983</guid>
    </item>
    <item>
      <title>SOIL MECHANICS APPLICATIONS. VOLUME 2</title>
      <link>https://trid.trb.org/View/1081007</link>
      <description><![CDATA[VOLUMES 1 AND 2 SUMMARISE THE APPLICATIONS OF THE THEORY DESCRIBED IN A BOOK PUBLISHED IN 1968 BY THE SAME AUTHORS AND ENTITLED "SOIL MECHANICS". THE TOPICS TREATED IN VOLUME 2 ARE THE STABILITY OF RETAINING WALLS, REINFORCED CONCRETE SLURRY TRENCH WALLS AND USE OF THIXOTROPIC MUD. UTILIZATION OF SHEET PILES FOR RETAINING STRUCTURES (TECHNOLOGY AND STABILITY OF CORRUGATED SHEET PILE WALLS, CELLULAR CONSTRUCTION SYSTEMS USING FLAT SHEET PILES, DEEP TRENCH SHEETING, SLOPE STABILITY, AND THE LOWERING OF WATER TABLES. SEE IRRD ABSTRACT NO 100356.]]></description>
      <pubDate>Sun, 21 Nov 2010 18:24:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/1081007</guid>
    </item>
    <item>
      <title>LOWERING OF A WATER TABLE AT FOS-SUR-MER</title>
      <link>https://trid.trb.org/View/1074964</link>
      <description><![CDATA[THE CONSTRUCTION OF THE STEEL PLANT AT FOS-SUR-MER GAVE RISE TO PROBLEMS DUE TO THE NATURE OF THE SUBGRADE, WHICH CONSISTS OF SANDY SILT OF LOW PERMEABILITY, APPROXIMATELY 10M THICK, RESTING ON GRAVELLY SOIL, THE UPPER PART OF WHICH (11 TO 22M) , BECAUSE OF LOW CONSOLIDATION, FORMS A GROUND WATER RESERVOIR. TO EXCAVATE TO A DEPTH OF 14M IT WAS NECESSARY TO LOWER THE WATER TABLE BY PUMPING. SURVEYING WAS CARRIED OUT BY MEANS OF BORING OR DRIVING, AND LEFRANC PERMEABILITY TESTS WERE CONDUCTED- THE DUPUIT CONVENTIONAL FORMULAE FOR CALCULATING RATES OF FLOW - LOWERING OF TABLE WERE USED. ACCORDING TO THE CALCULATIONS, 11 WELLS WERE NECESSARY. THE NUMBER WAS INCREASED TO 15, SO AS TO HAVE ADDITIONAL LOWERING MARGIN. SUDDEN STOPPAGE OF  THE PUMPS BEING CAPABLE OF CAUSING A RAPID RISE OF THE TABLE, CONTINUOUS  OPERATION OF THE PUMPS, IN GROUPS OF 5, WAS ENSURED BY SIX GENERATORS, WHICH WORKED IN TURN. A FILTERING LAYER CONSISTING OF A CRIB FILLED WITH GRAVELLY SOIL WAS BUILT AT THE SILT/GRAVELLY SOIL INTERFACE. THE RESULTS OBTAINED LED TO THE FOLLOWING OBSERVATIONS: (1) TO ENSURE PUMPING OF 1CU.M/S OVER SEVERAL MONTHS, ADEQUATE PLANT MUST BE INSTALLED; (2) IF PUMPING TAKES PLACE WHERE THE SALT WATER WATER-TABLE IS IN EQUILIBRIUM WITH THE FRESH WATER WATER-TABLE, EQUILIBRIUM RUPTURE WOULD HAVE BEEN FELT OVER A WIDE AREA; (3) IT IS MOST IMPORTANT THAT ADEQUATE CONTROL BE EXCITED AT THE BEGINNING AND DURING THE INSTALLATION OF THE WELLS.]]></description>
      <pubDate>Sun, 21 Nov 2010 14:49:54 GMT</pubDate>
      <guid>https://trid.trb.org/View/1074964</guid>
    </item>
    <item>
      <title>EFFECT OF THE LOWERING OF THE WATER TABLE ON THE INCLINATION OF A BUILDING</title>
      <link>https://trid.trb.org/View/1068291</link>
      <description><![CDATA[THE LOWERING OF THE WATER TABLE IS USUALLY THE CAUSE OF DIFFERENTIAL SETTLEMENT.  OBSERVATIONS ON REAL STRUCTURES ARE OF SPECIAL INTEREST AS THEY ENABLE THE REAL AMPLITUDE OF SURFACE MOVEMENTS TO BE COMPARED WITH CALCULATED VALUES. IN THIS ARTICLE, AN ATTEMPT IS MADE TO RELATE THE AMPLITUDE OF THE INCLINATION TO THE GEOTECHNICAL SOIL PARAMETERS AND LOWERING CONDITIONS.  DETAILS ARE GIVEN OF MEASUREMENTS MADE ON A BUILDING AFFECTED BY SETTLEMENT DUE TO LOWERING OF THE UNDERLYING WATER TABLE.  THE MEASUREMENTS WERE IN GOOD AGREEMENT WITH CALCULATED VALUES.]]></description>
      <pubDate>Sun, 21 Nov 2010 11:06:38 GMT</pubDate>
      <guid>https://trid.trb.org/View/1068291</guid>
    </item>
    <item>
      <title>GUIDELINES FOR THE PROTECTION OF TREES AND SHRUBS ON CONSTRUCTION SITES (RSBB). 1973 EDITION</title>
      <link>https://trid.trb.org/View/1064521</link>
      <description><![CDATA[THESE GUIDELINES ARE INTENDED TO AID THE PRESERVATION OF THE STOCK OF VEGETATION ON CONSTRUCTION SITES BY MAKING PROVISION FOR THE INCLUSION OF APPROPRIATE CLAUSES IN BILLS OF QUANTITIES AND BUILDING CONTRACTS.  CAUSE, EFFECTS AND REMEDIES ARE DISCUSSED IN THE CASES OF COMPACTION, STANDING WATER, SOIL CUT AND FILL, EXCAVATIONS AND GROUNDWATER LOWERING.  IN THE CASE OF OLDER TREES, WHERE THE SURROUNDING VEGETATION HAS BEEN REMOVED, PROTECTIVE MEASURES SHOULD BE TAKEN 2 TO 5 YEARS IN ADVANCE.  DAMAGE FROM VEHICLES  AND PLANT, CEMENT, FIRE, WIRE ROPES, ETC SHOULD BE AVOIDED. FINALLY ANY DAMAGE WHICH DOES OCCUR IS TO BE REMEDIED BY THE USE OF MULCHING, PRUNING,  THINNING AND THE APPLICATION OF WOUND DRESSINGS.]]></description>
      <pubDate>Sun, 21 Nov 2010 09:02:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/1064521</guid>
    </item>
    <item>
      <title>ROAD CONSTRUCTION ON SOFT SUBSOIL. ROAD CONSTRUCTION CONFERENCE 1975. 25 YEARS OF THE FGS, 17TH"19 SEPTEMBER 1975</title>
      <link>https://trid.trb.org/View/1063234</link>
      <description><![CDATA[A METHOD IS SHOWN FOR FORECASTING SOIL STABILITY AS A BASIS FOR SELECTING  THE TYPE OF CONSTRUCTION, FOR CALCULATING THE FINAL STABILITY AND FOR CALCULATING SETTLEMENTS AND THEIR TIME DEPENDENCE.  FURTHER TECHNICAL SOLUTIONS FOR THE FOUNDING OF EARTHWORKS ARE PRESENTED: THE MOST EXTENSIVE SETTLEMENT-FREE POSSIBILITY OF CONSTRUCTING BRIDGES OVER MARSHLAND ON BOX PILES, EXCAVATION OF GROUND WITH THREE DIFFERENT METHODS OF GROUND WATER CONTROL, OVERFILLING AND HYDRAULIC JETTING. THE PREREQUISITES AND POSSIBILITIES OF USING THESE METHODS ARE INVESTIGATED IN DETAIL.  THE PRECONSOLIDATION OF THE SUBSOIL BY OVERFILLING THE REQUIRED FILL LEVEL IS QUOTED AS BEING NORMALLY THE CHEAPEST METHOD OF CONSTRUCTION.  THE NECESSARY PRECONDITIONS ARE A SOIL ANALYSIS, SETTLEMENT ANALYSIS, A LONG ENOUGH CONSTRUCTION PERIOD  AND CONTROL MEASUREMENTS.  THREE EXAMPLES OF THE USE OF THIS METHOD ARE GIVEN: THE FILLING OF AN EMBANKMENT TO A MARSH BRIDGE (SETTLEMENT MEASUREMENTS ARE GIVEN), THE CONSTRUCTION OF A 14 M HIGH MOTORWAY EMBANKMENT WITH GRAVITY RETAINING EMBANKMENTS AT THE FOOT OF THE EMBANKMENT, THE FILLING OF TWO EXPERIMENTAL EMBANKMENTS ON 30 M DEEP SOFT CLAY AND SANDY SILT.  AS A LAST POSSIBILITY, METHODS FOR THE IMPROVEMENT OF SOFT SUBSOIL ARE GIVEN:  DYNAMIC CONSOLIDATION BY MEANS OF HEAVY DROP WEIGHTS, VIBROFLOTATION, THE INCLUSION OF SAND DRAINS OR OF DRAINS OF MAN-MADE MATERIAL, AND THE USE OF LIME PILES.]]></description>
      <pubDate>Sun, 21 Nov 2010 08:29:53 GMT</pubDate>
      <guid>https://trid.trb.org/View/1063234</guid>
    </item>
    <item>
      <title>DEWATERING AND HYDRAULIC PROBLEMS, SOIL FREEZING AND CHEMICAL TECHNIQUES</title>
      <link>https://trid.trb.org/View/1063104</link>
      <description><![CDATA[THIS GENERAL REPORT DEALS WITH THE FOLLOWING: THE PROBLEM OF HOMOGENEITY OF SOIL WITH RESPECT TO PERMEABILITY AND ITS DETERMINATION, ASPECTS OF THE  SOIL FREEZING METHOD SUCH AS THE USE OF LIQUID NITROGEN AS COOLANT AND PROBLEMS OF FROST SPREAD FROM LIQUID GAS STORES, HEAVE AND CONSEQUENT SETTLEMENT IN THE NEIGHBOURHOOD OF FREEZING SITES, ANALYSIS OF FROZEN TUNNELS AND EXCAVATIONS WITH THE AID OF THE FINITE ELEMENT METHOD, THE CREEP OF BEAMS OF FROZEN MEDIUM SAND, AND AN INVESTIGATION INTO THE CREEP DEFORMATIONS  OF A FROZEN RETAINING WALL CONSIDERING THE FAILURE OF THE PROCESS THROUGH DESTRUCTION OF THE COOLANT PIPES.  THEN FOLLOWS A REVIEW OF SOIL STABILIZATION AND A DESCRIPTION OF THE BASE EXCHANGE PROCESS FOR ILLITIC CLAYS.  FURTHER DESCRIPTIONS DEAL WITH IN-SITU COMPACTION, ESPECIALLY THE VIBRO-FLOTATION METHOD.  AN IN-DEPTH REVIEW OF INJECTION PROCESSES AND THEIR SPECIFIC APPLICATIONS IS PRESENTED. FINALLY THERE IS A REVIEW OF PAPERS DEALING  WITH SOIL DRAINAGE PROBLEMS.  THE TOPICS DISCUSSED ARE: DEVIATIONS FROM DARCY'S LAW, DRAINAGE OF IRREGULAR AREAS WITH HORIZONTAL POTENTIAL NETWORKS, TWO REPORTS DEALING WITH SETTLEMENTS CAUSED BY GROUND WATER LOWERING IN  BUILT-UP AREAS, CALCULATION OF THE WATER INFLOW INTO LARGE EXCAVATIONS, LEACHING AND HYDRAULIC FAILURE CAUSED BY UNSEALED EXPLORATION BORE HOLES.    THE COVERING ABSTRACT FOR THE CONFERENCE IS IRRD NO 306088.]]></description>
      <pubDate>Sun, 21 Nov 2010 08:26:49 GMT</pubDate>
      <guid>https://trid.trb.org/View/1063104</guid>
    </item>
    <item>
      <title>DEWATERING OF AN EXCAVATION PIT OF 57000 SQ M IN VERY PERMEABLE ALLUVIUM BY PUMPING</title>
      <link>https://trid.trb.org/View/1063039</link>
      <description><![CDATA[IN THE COURSE OF RECONSTRUCTION WORK IN A SECTION OF THE CITY OF LYON, SEVERAL OPEN EXCAVATIONS WERE MAINTAINED DRY BY MEANS OF A SIMPLE, 1000 M LONG, WATERTIGHT SHEET PILE WALL, WHICH WAS ANCHORED FIRMLY IN THE SLIGHTLY PERMEABLE (10 - 5 M/S) MOLASSE SUB-STRATA.  THE GROUNDWATER LAY IN VERY PERMEABLE ALLUVIUM (10 - 2 M/S).  THE REQUIRED DROP IN THE GROUNDWATER LEVEL  WAS 8.5 M.  FIELD TESTS CONSISTED OF THE MEASUREMENT OF THE OUTFLOW FROM  SEVEN PUMPS AND THE DATA OBTAINED FROM SIX PIEZOMETERS WITHIN THE EXCAVATED AREA AND FROM THREE OUTSIDE THE AREA.  THE OUTFLOW AMOUNTS TO APPROXIMATELY 1000 CU M PER HOUR AT 7.5 M DROP.  IT IS SHOWN THAT THE ACTUAL POROSITY AS CALCULATED FROM THESE MEASUREMENTS, IS TEN TIMES AS HIGH AS THAT OBTAINED FROM CLASSICAL PUMP TESTS.  THE RESULTS ARE COMPARED WITH THOSE OBTAINED FROM ANALOG SIMULATION WITH A RESISTANCE NETWORK. THE SATISFACTORY CORRELATION MADE IT POSSIBLE TO LOCATE AND TO MONITOR A LEAK IN THE PROTECTIVE WALL AND TO ESTIMATE THE EFFECT OF RE-ARRANGING THE PUMP SHAFTS AND THEIR EFFECTIVENESS.  THE COVERING ABSTRACT FOR THE CONFERENCE IS IRRD NO 306088.]]></description>
      <pubDate>Sun, 21 Nov 2010 08:25:11 GMT</pubDate>
      <guid>https://trid.trb.org/View/1063039</guid>
    </item>
    <item>
      <title>GENERAL TECHNIQUE FOR LOWERING THE WATER TABLE</title>
      <link>https://trid.trb.org/View/1058777</link>
      <description><![CDATA[THE TECHNIQUE OF FILTER NEEDLES USED IN FRANCE FOR APPROXIMATELY FIFTY YEARS IS DESCRIBED.  IT FACILITATES THE DRYING OF SOILS OF LOW PERMEABILITY,  IT IS THE ONLY USABLE SYSTEM WHERE THE NON-PERMEABLE SOIL LIES AT A SHALLOW DEPTH UNDER THE FLOOR OF THE EXCAVATION TO BE DRAINED, AND IT IS LESS COSTLY THAN FILTER WELLS WHEN BOTH SYSTEMS ARE APPLICABLE.  THE SYSTEM IS CAPABLE OF LOWERING THE WATER TABLE BY 5 M TO 6 M ONLY.  THE VARIOUS TECHNICAL PROCEDURES WHICH MUST BE USED DEPENDING ON THE PERMEABILITY OF THE MATERIAL OF THE WATER TABLE ARE OUTLINED.]]></description>
      <pubDate>Sun, 21 Nov 2010 06:25:46 GMT</pubDate>
      <guid>https://trid.trb.org/View/1058777</guid>
    </item>
    <item>
      <title>EARTHWORKS IN SATURATED GROUND</title>
      <link>https://trid.trb.org/View/1058506</link>
      <description><![CDATA[THE OBJECT OF THE BOOK IS TO OUTLINE THE DIFFERENT TECHNIQUES AND EQUIPMENT USED TO SOLVE EARTHMOVING PROBLEMS IN SATURATED SOIL.  IT CONTAINS BASIC THEORETICAL PRINCIPLES AND PRACTICAL DATA.  THE FOLLOWING ASPECTS ARE STUDIED: PROTECTION OF EXCAVATIONS AGAINST WATER, IDENTIFICATION OF SOILS, WATER IN SOIL, STUDY AND PLOTTING OF THE WATER TABLE LOWERING CURVE, SELECTION OF A SYSTEM OF LOWERING THE WATER TABLE, PLANNING OF THE LOWERING OPERATIONS, EXAMPLE OF A TYPICAL SITE.]]></description>
      <pubDate>Sun, 21 Nov 2010 06:18:57 GMT</pubDate>
      <guid>https://trid.trb.org/View/1058506</guid>
    </item>
    <item>
      <title>SIX EXAMPLES OF WATER TABLE LOWERING</title>
      <link>https://trid.trb.org/View/1058125</link>
      <description><![CDATA[THE SIX EXAMPLES WERE CHOSEN BECAUSE OF THE DIFFICULTIES OR EXCEPTIONAL PHENOMENA THEY ILLUSTRATE.  THEY REPRESENT CONVENTIONAL OPERATIONS OF LOWERING OF WATER-TABLES IN FRANCE.  ON SOME SITES, THERE WERE NO PRELIMINARY INVESTIGATIONS, THE SITE MANAGER USING HIS EXPERIENCE ONLY. FOR SOME OTHER SITES EXTENSIVE HYDROLOGICAL INVESTIGATIONS WERE CARRIED OUT AND THE LOWERING DEVICE WAS ADJUSTED PROGRESSIVELY.  NOTIONS OF "THE APPARENT RANGE OF THE LOWERING OPERATION" AND OF "THE EFFECTIVE RANGE OF WELLS" ARE DISCUSSED.]]></description>
      <pubDate>Sun, 21 Nov 2010 06:09:20 GMT</pubDate>
      <guid>https://trid.trb.org/View/1058125</guid>
    </item>
    <item>
      <title>MAIN CHARACTERISTICS OF HYDROGEOTECHNICS</title>
      <link>https://trid.trb.org/View/1058124</link>
      <description><![CDATA[AFTER EMPHASIZING THE ROLE OF WATER IN HYDROGEOTECHNICS, THE AUTHOR RECALLS THE BASIC CONCEPTS OF SOIL HYDRAULICS: CONCEPT OF PRESSURE, DARCY LAW, METHODS OF STUDYING FLOWS, SOLUTION TO THE LAPLACE EQUATION, SIMULATION.  A STUDY IS PRESENTED OF THE MECHANICAL EFFECT OF WATER ON THE SOIL, NOTIONS OF EFFECTIVE STRESSES AND FLOW FORCES AND DIFFERENCE BETWEEN THE SHORT- AND LONG-TERM BEHAVIOUR OF THE SOIL.  THE MAIN DIFFERENCES BETWEEN HYDROGEOTECHNICS AND HYDROGEOLOGY ARE STRESSES: STUDY OF PRESSURES AND NOT OF FLOW; ROLE OF HETEROGENEITY AND THREE DIMENSIONS; IMPORTANCE OF ANISOTROPY; STUDY OF WATER TABLES AND THEIR LOWERING IN HIGHLY HETEROGENEOUS TERRAIN WITH LOW PERMEABILITY, ETC.]]></description>
      <pubDate>Sun, 21 Nov 2010 06:09:19 GMT</pubDate>
      <guid>https://trid.trb.org/View/1058124</guid>
    </item>
    <item>
      <title>THE LOWERING OF THE WATER TABLE APPLIED TO THE DRYING AND THE EXTRACTION OF HIGHWAY MATERIALS</title>
      <link>https://trid.trb.org/View/1057888</link>
      <description><![CDATA[IN THE SAONE VALLEY, THE TECHNIQUE OF WATER TABLE DRAWDOWN APPLIED TO THE  DRYING AND THE EXTRACTION OF MATERIAL WAS USED FOR THE FIRST TIME ON A LARGE SCALE DURING THE CONSTRUCTION OF THE A6 MOTORWAY.  THE ADVANTAGES AND  THE SIMPLICITY OF THIS METHOD HAVE MADE IT A CLASSICAL SOLUTION; NOWADAYS IT IS USED VERY FREQUENTLY.  FOLLOWING AN EXAMINATION OF THE ADVANTAGES AND THE DISADVANTAGES OF THE TECHNIQUE, THE ARTICLE, BASED ON OBSERVATIONS  IN SEVERAL DEPOSITS, ATTEMPTS TO DEFINE WHY AND HOW SUCH A METHOD IS CHOSEN; HOW THE PUMPING IS CARRIED OUT; HOW THE MATERIAL IS DRIED.  THE ARTICLE OUTLINES THE DIFFICULTIES WHICH WERE ENCOUNTERED IN THE PREDICTION OF THE SPEED OF DRYING AND THE FINAL WATER CONTENT OF THE AGGREGATE; THE CONSEQUENCES OF PUMPING ON THE WATER TABLE, THE PROBLEMS OF EMPTYING AND RECHARGING OF THE GROUNDWATER.  FINALLY, A COMPARISON IS MADE BETWEEN THE PREDICTIONS AND REAL CONDITIONS: THE CALCULATED DISCHARGE PREDICTED IS SUFFICIENTLY CLOSE TO THAT ACTUALLY MEASURED, BUT THE PRECISION OF THE STUDIES REMAINS FAIRLY LOW; THIS IS NOT, HOWEVER, VERY IMPORTANT IN THE FIELD OF INDUSTRIAL EXTRACTION; THE ORDER OF MAGNITUDE IS ALL THAT IS NECESSARY.  THE ARTICLE CONCLUDES BY STRESSING: ON THE ONE HAND THE NECESSITY TO TAKE CERTAIN PRECAUTIONS; THE LACK OF KNOWLEDGE OF THE LAWS GOVERNING THE DRYING OF A  MATERIAL AND THE DIFFICULTIES INVOLVED IN MAKING A REASONABLE ESTIMATE.    TAKING ACCOUNT OF ACTUAL NEEDS, THIS METHOD MUST BE DEVELOPED FURTHER, PARTICULARLY IN THE EXTRACTION OF CLAY MATERIALS.]]></description>
      <pubDate>Sun, 21 Nov 2010 06:02:27 GMT</pubDate>
      <guid>https://trid.trb.org/View/1057888</guid>
    </item>
    <item>
      <title>EFFECT OF HIGHWAY CONSTRUCTION ON WATER</title>
      <link>https://trid.trb.org/View/1054788</link>
      <description><![CDATA[THE AIM OF THIS RESEARCH IS TO DETERMINE THE INFLUENCE OF THE IMPLEMENTATION OF A GIVEN HIGHWAY PROJECT ON THE EXISTING WATER ENVIRONMENT AND THE METHODS TO ADOPT TO CANCEL OR LIMIT THIS INFLUENCE.  IN 1978 OBSERVATIONS WERE STARTED ON THE INFLUENCE OF BORROWING AND OPENING OF CUTTINGS AND CONTINUED ON THE EFFECT OF DEICING SALT USE ON RUN-OFF WATER (1978-1979 WINTER).  THE 1979 PROGRAMME COMPRISES: (1) THE CONTINUATION OF OBSERVATIONS ON THE REPERCUSSIONS OF BORROWING AND CUTTINGS, ON THE WATER TABLE AND VEGETATION; (2) A BIBLIOGRAPHIC STUDY OF THE HYDRAULIC MECHANISMS IN THE WHOLE WIDTH OF THE ROAD AND OF THE WHOLE OF THE DRAINAGE SYSTEM (RUN-OFF AND DISPERSION OF WASTE WATER).]]></description>
      <pubDate>Sun, 21 Nov 2010 04:12:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/1054788</guid>
    </item>
    <item>
      <title>HYDROGEOLOGY</title>
      <link>https://trid.trb.org/View/1054738</link>
      <description><![CDATA[THE AIM OF THE RESEARCH IS TO FIND SOLUTIONS TO DRAINAGE PROBLEMS OF LOWERING OF THE WATER TABLE IN SLOPING CLAYEY-SILTY FORMATIONS.  SIMULTANEOUSLY MORE SPECIFIC PROBLEMS WILL BE DEALT WITH: IMPERVIOUSNESS OF PONDS, WATER TABLE FLUCTUATIONS; AN EXPERIMENTAL SITE SET UP IN 1977 HAS FACILITATED THE ANALYSIS OF HYDROGEOLOGICAL AND HYDROLOGICAL CONDITIONS.  OBSERVATIONS  WILL BE CONTINUED ON A DRAINAGE TRENCH BUILT IN 1978.  EXPERIMENTAL SECTIONS WILL BE BUILT WITH PLANTS HAVING A HIGH EVAPOTRANSPIRATION POWER; A BIBLIOGRAPHIC SEARCH WILL BE CONDUCTED OF THE IMPERVIOUSNESS OF THE BOTTOMS  OF PONDS, SOME EXPERIMENTS WILL COMPLETE THIS BIBLIOGRAPHY; DATA WILL BE  COLLECTED, AND INFORMATION ON THE EVOLUTION OF SUPERIMPOSED WATER TABLES  IN THE PARIS REGION WILL BE SUMMARIZED.]]></description>
      <pubDate>Sun, 21 Nov 2010 04:09:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/1054738</guid>
    </item>
  </channel>
</rss>