GROUND WATER AND URBAN PLANNING. REPORT FROM STEGA 1966-73

GRUNDVATTEN OCH BYGGANDE. STEGAS ARBETE 1966-73

Knowledge of groundwater conditions is essential in designing building structures, particularly when foundations are complex and at great depth. Drops in the water table can lead to serious damage to ground and buildings. This project comprised questionnaire surveys, groundwater measurements in reference areas, damage due to settlement near Stockholm, measurements of water table and settlements in new development areas, groundwater problems near tunnels and deep excavations, a computer model for groundwater, a land cost index, effect of groundwater on vegetation, and bacterial decomposition of foundation timber. In a Stockholm suburb, serious settlements occurred in an area built on postglacial clay; piles buckled and there was corrosion. In another Stockholm area, settlement damage is so extensive that repair costs amount to 50% of property value. Several tunnelling projects are in progress in this area. Water table conditions before and after construction were studied in two model areas. Some tunnelling and deep excavation projects were investigated. A drop in water table can affect vegetation; timber piles which had always been below the water table suffer bacterial decomposition. The group compiled building geological maps comprising geological and geotechnical data and also foundation and land costs index maps based on these. /TRRL/

• Corporate Authors:

  National Swedish Institute for Building Research

  Valhallavaegen 141
  Stockholm,   Sweden 
• Authors:
  • Lindskoug, N E
  • Nillson, L Y
• Publication Date: 1974

Language

• Swedish

Media Info

• Features: Figures; Photos; Tables;
• Pagination: 164 p.

Subject/Index Terms

• TRT Terms: Bacteria; City planning; Construction; Foundations; Ground settlement; Groundwater; Soil mechanics; Structural design; Subways; Support piles; Tunneling; Tunnels; Vegetation; Water table
• Uncontrolled Terms: Tunnel design
• Old TRIS Terms: Foundation conditions; Subway construction
• ITRD Terms: 3352: Building (structure); 3655: Construction; 1614: Damage; 3377: Foundation; 4383: Ground water; 4395: Lowering (water table); 143: Planning; 5792: Settlement; 354: Town planning; 3374: Tunnel; 374: Urban development; 4394: Water table
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; Hydraulics and Hydrology; Public Transportation;

Filing Info

• Accession Number: 00126194
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R20:1974 R&D Rept.
• Files: ITRD, TRIS
• Created Date: Apr 21 1981 12:00AM