UST960001I4 - Culvert construction - Google Patents

Culvert construction Download PDF

Info

Publication number
UST960001I4
UST960001I4 US05/676,444 US67644476A UST960001I4 US T960001 I4 UST960001 I4 US T960001I4 US 67644476 A US67644476 A US 67644476A US T960001 I4 UST960001 I4 US T960001I4
Authority
US
United States
Prior art keywords
culvert
base layer
permafrost
construction
culvert construction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US05/676,444
Inventor
George R. Knight
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to US05/676,444 priority Critical patent/UST960001I4/en
Application granted granted Critical
Publication of UST960001I4 publication Critical patent/UST960001I4/en
Pending legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
    • E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Agronomy & Crop Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Road Paving Structures (AREA)

Abstract

a culvert construction particularly useful in Arctic regions wherein a permafrost condition typically prevails is provided by a culvert having an insulating base layer between the culvert and the permafrost, preferably wherein the base layer is of greater width than the width of the culvert. Suitable materials for preparing the insulating base layer are synthetic resin foams such as polyurethane and polystyrene. The culvert construction is useful in Arctic regions where a permafrost condition prevails to inhibit culvert sag and culvert icing.
US05/676,444 1975-05-15 1976-04-12 Culvert construction Pending UST960001I4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/676,444 UST960001I4 (en) 1975-05-15 1976-04-12 Culvert construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57757775A 1975-05-15 1975-05-15
US05/676,444 UST960001I4 (en) 1975-05-15 1976-04-12 Culvert construction

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US57757775A Continuation 1975-05-15 1975-05-15

Publications (1)

Publication Number Publication Date
UST960001I4 true UST960001I4 (en) 1977-07-05

Family

ID=27077282

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/676,444 Pending UST960001I4 (en) 1975-05-15 1976-04-12 Culvert construction

Country Status (1)

Country Link
US (1) UST960001I4 (en)

Similar Documents

Publication Publication Date Title
IE40627L (en) Mould release additives for production of polyurethane¹foams
GB1370872A (en) Roof construction and method for preparing same
IT1079698B (en) PROCEDURE FOR PRODUCING POLYURETHANE FOAMED MATERIALS
AU5076479A (en) Reinforced foamed resin structural material
BR7707707A (en) PROCESS FOR THE PRODUCTION OF A CELLULAR POLYURETHANE ELASTOMER; ELASTOMER; AND MIXTURE
ES8102909A1 (en) Insulation of pipe by multi- stage application of foam
IT8023819A0 (en) PROCEDURE FOR PRODUCING A FORMED PART AS WELL AS A FORMED PART PRESENTING A LAYER OF FOAMED MATERIAL.
AU509337B2 (en) Continuous production of foamed sheet
ES453245A1 (en) Moulded panel and the method of its manufacture
UST960001I4 (en) Culvert construction
GB1493007A (en) Hose structure
GB1316388A (en) Stationary structure resting on the seabed
CA1032300A (en) Low smoke-output polyurethane and polyisocyanurate foams
ES403654A1 (en) Manufacture of resilient compound foams
IL53204A0 (en) The production of cellular concrete
JPS5374596A (en) Manufacture of rigid polyurethane foam
JPS5239767A (en) Process for providing polyurethane foam layer on cut or ground surface of polyurethane foam
FR2441691A1 (en) Structural insulation panels with multifacet surface - of fibre-cement board, using the elasticity of a foam core to inhibit cracking of a plaster coating
NL7602067A (en) Moulded building component preparation - uses outside layers of glass fibre and cement, between which is sandwiched a layer of polystyrene and cement
GB1170079A (en) Improved Polyurethane Foam and Method of Producing same
SU607567A1 (en) Method of breaking up the cell structure of raw vegetable material
GB1010715A (en) Structural unit with foamed synthetic resin layer
CA854253A (en) Method of fabrication of molded parts of polyurethane foam having a non-cellular surface layer
JPS5349098A (en) Preparation of urethane elastomer
JPS5291813A (en) Method of producing butane diol