DR. SPANG INGENIEURGESELLSCHAFT FÜR BAUWESEN, GEOLOGIE UND UMWELTTECHNIK MBH

EnglishGerman

DR. SPANG INGENIEURGESELLSCHAFT
FÜR BAUWESEN, GEOLOGIE
UND UMWELTTECHNIK MBH

Rockfall protection

Selected reference projects

Dr. Spang GmbH

Rock stabilization measures on trunk roads in the Bayreuth district


Developer

State office for construction, Bayreuth

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 814 KByte

Project

  • Rock stabilization measures along Bundesstraße 22
  • east of Wiesentfels, section 1160
  • west of Neidenstein, section 1180
  • west of Hollfeld, section 1180
  • There are risks of stone, rock and boulder falls that necessitate stabilization measures

Our services

  • Inspection of the mountain side and rock sections
  • Preparation of geotechnical reports to determine and quantify rock stabilization measures
  • Drafting of a stabilization and repair concept with cost estimates
   

B27 Würzburg - Karlstadt road,
rock stabilization measures south
of Karlstadt


Developer

State office for construction, Würzburg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 648 KByte

Project

  • Along the B27 south of Karlstadt rock stabilization measures over a total length of approx. 2,000 m are required on the slopes of the Maintal valley in order to protect the roadway:
  • 5,000 m² of rock clearance
    • 500 m² of overnetting, 450 m of rock protection fencing, 350 rock nails to protect against individual risks
    • 200 m³ of shotcrete underpinning

Our services

  • Geotechnical site survey
  • Surveying services
  • Rockfall simulations
  • Development of stabilization and remediation proposals in a study of options inc. cost estimate
  • Rock stabilization planning services
  • Performance of project and structural engineering planning pursuant to HOAI § 42 and HOAI § 49 for service phases 3 and 5-7
  • Expert geotechnical and geological site management
   

Regensburg municipal area, Mattinger Straße / rocky slopes below the Max-Schultze-Steig nature conservation zone


Developer

City of Regensburg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 556 KByte

Project

  • There were risks of stone, rock and boulder falls that required technical stabilization measures over a total length of approx. 600 m on the rocky slopes above the Mattinger Straße link road in Regensburg
  • Protection against individual risks on the up to 25 m high rock sections by means of rock nails and shotcrete seals
  • Erection of a trapping structure in a short section at the foot of the rocky slope and clearance of some areas

Our services

  • Geotechnical site survey
  • Elaboration of stabilization and renovation proposals
  • Project and structural engineering planning pursuant to HOAI § 42 and HOAI § 49 for service phases 3 - 6
  • Expert technical and ecological site management
   

DB section 5634 Landshut - Bayerisch-Eisenstein, km 87.920 near Arzting


Developer

DB Netz AG, Plattling

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 1183 KByte

Project

  • The non-electrified single-track DB section 5634 cuts through rock over a distance of approx. 135 m east of the village of Arzting
  • The height above rails of the adjacent slopes is up to 40 m
  • A geotechnical inspection of the cutting is required due to the existing risks of stone and rock falls

Our services

  • Geotechnical inspection of the rocky slopes to the left and right of the track
  • Assessment of the stability of the slope and the inclines
  • Risk assessment
  • Development of stabilization and remediation proposals including cost estimate and summarization of the results
   

Rockfall risks on the
Kalbenstein hill


Developer

Karlstadt Municipal Authority

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 831 KByte

Project

  • The rock formation on the Kalbenstein hill is located a few kilometres to the north of Karlstadt on the right orographic cut bank of the Maintal valley
  • There are risks of rock and boulder falls on the slopes of the Kalbenstein
  • Hazards for the Bundesstraße 26 running along the base of the valley and DB track section 5200 from Würzburg to Aschaffenburg

Our services

  • Geotechnical site survey
  • Rockfall simulation
  • Assessment of stability
  • Development of stabilization and remediation proposals in a study of options including cost estimate
   

Stone and rockfall risks in Artelshofen


Developer

District of Vorra

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 711 KByte

Project

  • On the rocky slope above the Wirtsleite road in the township of Artelshofen there were risks of stone, rock and boulder falls that required technical stabilization measures

Our services

  • Geotechnical site survey
  • Rockfall simulation
  • Planning services for rock stabilization, project and structural engineering planning pursuant to HOAI § 42 and HOAI § 49 for service phases 3 to 7 and 3.6
  • Geotechnical site supervision
  • Ecological site management
   

Rockfall protection for DB track section 5634


Developer

DB Netz AG, southern regional networks division, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 1124 KByte

Project

  • The non-electrified single-track DB section 5634 from Landshut to Bayerisch Eisenstein cuts through rock over a distance of approx. 140 m west of the village of Großtiefenbach
  • The height above rails of the adjacent slopes is up to 18 m
  • Stabilization of unstable rock sections with nails

Our services

  • Geotechnical monitoring of a rock measure with geotechnical surveys
  • Geotechnical export report assessing the risks
  • Structural engineering planning for rock stabilization
   

Rock stabilization on track section 5210 Gemünden-Bad Kissingen


Developer

DB Netz AG, regional networks installation planning division, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 882 KByte

Project

  • DB track section 5210 between Gemünden and Bad Kissingen runs in a cutting from km 44.500 to 44.940 and from km 43.,885 to 44.140
  • In these cuttings the section is bordered on both sides by almost vertical walls of mottled sandstone that rise to up to 10.0 m above the rails
  • An expert assessment of the rocky slopes identified risks of stone and rock falls

Our services

  • Planning services for rock stabilization, service phases 3-7
  • Geotechnical examinations
  • Survey with full assessment of the condition of the areas to be stabilized
  • Construction support
   

Rock and slope stabilization measure on the RN27 road at Michelau, Luxembourg


Developer

Ministry of Sustainable Development and Infrastructure, Luxembourg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 733 KByte

Project

  • Full closure of the RN27 between Michelau and Erpeldange in the Diekirch district following rockfalls over an area of approx. 5,000 m³ and 1.000 m³
  • Relocation of the road by means of temporary bridges to the other side of the La Sure river
  • Before the RN27 could be opened again to traffic, rockfall protection fencing had to be erected in combination with an embankment structure

Our services

  • Project and structural engineering planning pursuant to HOAI (2013) § 43 and § 51, service phases 5 and 6
  • Preparation of a ready invitation to tender for rockfall protection measures (tender and final design)
  • Measurement of the rockfall protection measures using ROCKFALL V7.1 (energy class, structure height, embankment geometry and slope design)
  • Static measurement
  • Expert technical and geotechnical site management of construction works
   

Rockfall events at Zachenberg, DB section Landshut-Bayerisch Eisenstein


Developer

DB Netz AG, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 860 KByte

Project

  • Rock stabilization measure in the village of Zachenberg
  • Hazard to DB track section 5634, km 99.380-99.535
  • Cutting is approx. 20 to 25 m deep and about 250 m long
  • Track laid in an extended right-hand bend
  • Stabilization through overnetting

Our services

  • Project and structural engineering planning pursuant to HOAI for the stabilization measures
  • Design, approval and execution planning for rock stabilization works
  • Preparation of project specifications and schedule of works
  • Preparation of tender documents
  • Environmental screening
  • Technical article on nature conservation law
   

Rock stabilization, Förtschendorf


Developer

State Office for Construction, Bamberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 575 KByte

Project

  • A slope is being stabilized as part of the widening to three lanes of B 85 trunk road between Förtschendorf and Steinbach am Wald
  • 10,000 m² of steel wire mesh in total

Our services

  • Execution planning
  • Technical processing pursuant to HOAI § 55 and § 64, service phase 5
  • Verifiable statics for the rock stabilization and execution drawings
   

Stabilization of
Steinerne Wehrberg


Developer

Hessen Mobility, Roads and Traffic Management department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 432 KByte

Project

  • Stabilization of the Steinerne Wehrberg at Vaake alongside the B 80 between Hanover Münden and Reinhardshagen
  • Location: km 4.2 to km 6.4 on the B 80
  • The Steinerne Wehrberg is a rocky slope with an angle of slope of between 30° and 90°
  • Rock walls and projections at heights of 10 m to 130 m above the road level

Our services

  • Elaboration of a repair concept
  • Planning services in accordance with § 40 HOAI, service phases 1–3 (establishing basis of the project, preliminary design, final design inc. statics)
  • Surveying services
   

Rock stabilization on the
Vilshofen - Ortenburg DB track section


Developer

DB Netz AG, Plattling

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 385 KByte

Project

  • The single-track, non-electrified branch line 5833 from Vilshofen to Ortenburg runs past the southeastern edge of the town of Vilshofen
  • Localized stability risks make stabilization measures essential for the rocky slope between km 1.320 and km 1.420
  • Overnetting of 250 m2 with high-strength steel mesh
  • 10 individual areas stabilized with rock nails

Our services

  • Execution-ready planning for the rock stabilization
  • Project planning pursuant to HOAI § 55 (service phases 1, 3, 5, 6, 7)
  • Structural engineering planning pursuant to HOAI § 64 (service phases 1, 3, 5, 6)
  • Preparation of project specifications and schedule of works
   

Rock stabilization, Flöteberg


Developer

Lower Saxony Regional Roads and Traffic Authority, Goslar

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 285 KByte

Project

  • Rocks and boulders keep falling beside rural road L 500, section 140, Othfresen - Liebenburg, station 0.625 - 0.955
  • 255 tons of rock have already been cleared so far
  • There is a retaining fence in front of some parts of the slope.

Our services

  • Geotechnical examination of the area on the mountain side of the L 601
  • Geological survey
  • Geodetic survey
  • Analysis and documentation of results
  • Recommendation of measures, including concept for the long-term stabilization of the rock slope with options and cost estimates
  • Project planning pursuant to HOAI § 43, service phases 3 (final design) and 6 (preparation of contract placement)
  • Structural engineering planning pursuant to HOAI § 50, service phases 3 (final design) and 6 (preparation of contract placement)
   

Rock stabilization, Krappenhofen
by DB track section 5850


Developer

DB Netz AG, Regional Repairs, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 330 KByte

Project

  • DB track section 5850 Regensburg-Nuremberg runs in a cutting from km 41.700 to 42.035 in the vicinity of Krappenhofen
  • The surfaces of the slope present an erratic, dissected relief and the average angle of slope is approx. 70-90°
  • There are risks of stone and boulder falls

Our services

  • Execution-ready project planning and structural engineering planning pursuant to HOAI § 42 and HOAI § 49 (service phases 3, 5-7) for the rock stabilization
  • Railway site management
  • Geotechnical support during construction
   

Road 2162, renewal of overnetting


Developer

State Office for Construction, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 294 KByte

Project

  • At Enzendorf on road 2162 the overnetting, which covers an area of approx. 2,500 m², is in need of replacement
  • The protection was laid down in the form a hexagonal wire mesh when the slope was built (about 30 years ago)
  • In some places it is not fixed adequately to the surface of the rock
  • Sizeable accumulations of material up to several cubic metres in size on the mountain side

Our services

  • Planning services pursuant to HOAI § 42 and HOAI § 49, service phases 3, 5 - 7
  • Renewal of the protection
  • Local upgrading and supplementing of the existing overnetting (rock nails, protective nets)
  • Erection of the rockfall protection fence
   

Rockfall protection, Gewann Steinberg, Eberstadt


Developer

District of Eberstadt, construction department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 288 KByte

Project

  • Rocks and boulders up to several m3 in size have repeatedly broken loose from a ledge on the Steinberg to the north of Eberstadt
  • The ledge is approx. 200 m long, 10 to 15 m high and an almost vertical Schilfsandstein formation
  • The ledge is heavily fissured and in some areas grooved by the weathering of the underlying layer of rock

Our services

  • Geotechnical investigative and consulting services for rockfall protection
  • Geotechnical site survey of the ledge
  • Assessment of the stability of the ledge
  • Elaboration of stabilization and renovation proposals including cost estimate
   

Rock stabilization for the
children’s play area, Müllenberg


Developer

City of Heidelberg, Agriculture and Forestry department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 383 KByte

Project

  • The Müllenberg play area in the Rohrbach part of Heidelberg is located in a former red sandstone quarry
  • The rock wall is up to approx. 25 m high and approx. 70 m long
  • The old 1.5 m-high protective fence of hexagonal wire mesh was frequently overleapt by rocks and boulders

Our services

  • Geotechnical investigative and consulting services for rockfall protection with mountaineering inspection
  • Study of stabilization options
  • Geotechnical report
  • Project and structural engineering planning, service phases 3 to 7
  • Specialist construction supervision
   

Slope stabilization,
Förtschendorf


Developer

State office for construction, Bamberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 561 KByte

Project

  • Widening of the B85 road and addition of a cycle path in a narrow cutting
  • Three-lane upgrade between Pressig and Steinbach
  • Establishment of slope cuttings in loose and solid rock
  • Variety of stabilization techniques due to changing geotechnical conditions
  • Total surface area of slopes to be stabilized 30,000 m2
  • Construction section approx. 3.3 km long

Our services

  • Geotechnical investigative services
  • Project and structural engineering planning (performance phases 4 and 5) for slope and rock stabilization
  • Overnetting of entire slope and steep cutting, partly with erosion protection and rock nails
  • Shotcrete stabilization and sealing of an outcrop area (FE modelling)
   

Rock stabilization,
Couragefels


Developer

Albstadt Municipal Authority, Albstadt-Tailfingen

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 970 KByte

Project

  • Rockfall protection for the Couragefels in Albstadt - Ebingen
  • Risks of rock falls, boulder falls and avalanche from the rock walls up to approx. 36 m2
  • Stabilization by means of nailing and overnetting

Our services

  • Mountaineering inspection and mapping
  • Project and structural engineering planning
  • Planning services and static tests for the overnetting of the lower areas of the Couragefels
  • Application documents for nature conservation approval
  • Geotechnical support during construction
   

Avalanche and rockfall stabilization,
Steinenkircher Steige


Developer

Stuttgart Regional Administrative Authority

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 886 KByte

Project

  • Constant risks to road traffic from km 1.0 to km 1.6 on the L 1221 between the townships of Eybach and Steinenkirch
  • Rock and stone falling onto the road from the scars on the mountain side of the road
  • The scars project up to approx. 30 m from the slope, which has an average incline of 30 to 40°, and form an intermittent shelf

Our services

  • Taking of oblique aerial photographs as a basis for mapping
  • Geotechnical site survey of the scars and side slopes on the mountain side
  • Risk assessment
  • Specification of rock mechanical parameters
  • Assessment of the stability of the slope and ledge
  • Stabilization and redevelopment proposals in a study of options with cost estimate
   

Highway 2236 (Alfeld-Hersbruck)
at Regelsmühle


Developer

State office for construction, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 939 KByte

Project

  • Some sections of highway 2236 in the Albachtal valley run alongside rocky slopes
  • In May 2011 rocks fell from a section of rock approx. 45 m long and up to 15 m high
  • A geotechnical inspection to assess the risks was ordered
  • Removal of rock in order to eliminate acute risks
  • Extensive rock stabilization measures by means of netting and rockfall protection fencing

Our services

  • Geotechnical investigative services
  • Inspection of the rock sections by rope
  • Project and structural engineering planning (performance phases 2-7)
  • Specialist support for construction works
  • Supervision of works and documentation
  • Measurement and invoice verification
   

Slope stabilization, B37
Binau-Neckargerach


Developer

Karlsruhe Regional Administrative Authority

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 544 KByte

Project

  • Stabilization of the B37 trunk road between Binau and Neckargerach in Neckar-Odenwald district, which is at risk of rockfall
  • Rocky slope in the mottled sandstone just below track section 4111 Neckargemünd-Jagstfeld
  • Stabilization by rockfall protection netting and shotcrete in combination with isolated stabilization of projections in the rocky slope

Our services

  • Static calculations for the shotcrete stabilization, overnetting with high-strength steel wire mesh and isolated stabilization of projections in the lower part of the slope
  • Specialist construction supervision
  • Geotechnical consultancy for the project and structural engineering planning for slope stabilization pursuant to HOAI
   

Rockfall risk in the vicinity
of the turbine house at the Saidenbach reservoir


Developer

Saxony dam and reservoir authorities, Freiberg basin/Zschopau facility, Lengefeld

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 803 KByte

Project

  • Gneiss support blocks are embedded in the masonry dam of the Saidenbach reservoir
  • Support blocks are crumbling and falling onto traffic areas that are used daily and the turbine house

Our services

  • Mountaineering inspection
  • Assessment of rockfall risk
  • Geotechnical survey of the masonry dam on the air side
  • Study of options based on terrain data
  • Environmental impact assessments
  • Project and structural engineering planning for remedial stabilization with rockfall protection fencing (performance phases 2-7)
   

Rockfall and avalanche stabilization by the A8
motorway, Drackensteiner Hang


Developer

Stuttgart Regional Administrative Authority

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 881 KByte

Project

  • Constant threat to road traffic on the A8 motorway, Drackensteiner Hang / Albabstieg
  • Risks of rockfall and avalanche from km 152+230 to 152+910
  • Rock and boulder fall events
  • Slope height up to approx. 30 m

Our services

  • Taking of oblique aerial photographs as a basis for mapping
  • Geotechnical site survey of the scars and side slopes on the mountain side
  • Risk assessment
  • Specification of rock mechanical parameters
  • Assessment of the stability of the slope and ledge
  • Stabilization and redevelopment proposals in a study of options with cost estimate
   

Stabilization of rock formations
on the Hirtenberg im Pegnitztal


Developer

BAVARIAN STATE FORESTS, Schnaittenbach

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 164 KByte

Project

  • Rock formations on the Hirtenberg in the vicinity of Hartenstein, Middle Franconia
  • Fall of an approx. 200 kg rock into a built-up area
  • Extensive risks of stone and rock falls

Our services

  • Geotechnical examinations
  • Site surveys of slope and incline, surveying
  • Assessment of stability
  • Elaboration of stabilization and renovation proposals including cost estimate
  • Elaboration of an execution-ready project and structural engineering plans of stages 3-7 of protective structures, having due consideration for nature conservation requirements
   

Precipice stabilization,
Hoher Stein, Dresden


Developer

DB Netz AG, Southeast Region, Leipzig

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 154 KByte

Project

  • Danger to rail services on line 6258 Dresden-Werdau, km 3.3-3.5
  • Extensive stone and rock fall risks
  • Rock avalanche risks

Our services

  • Planning services: stages 3 final design, 4 planning application
  • Preparation of tender documents
  • Surveying and geotechnical services
  • Environmental screening
  • Landscape management support planning
  • Special species protection assessment, FFH assessment
   

Isar eastern bank, geological examination, evaluation, concept creation and monitoring of the steep slopes between Grünwalder bridge and Marienklausensteig


Developer

City of Munich, buildings department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 168 KByte

Project

  • Approx. 7 km valley slope on the east bank of the Isar in the southern part of Munich and the district of Grünwald
  • Heavily frequented recreation area
  • Risks from gravitative mass movements in the form of rock, stone and boulder falls
  • Risks from near-surface movements of the slope
  • Long-term danger to paths running above the slope through progressive erosion

Our services

  • Recording all stabilization and hazard-relevant locations through geological mapping
  • Documentation and evaluation of the recorded risks; derivation of structural stabilization measures
  • Geotechnical support for remedial measures
  • Preparation of an investigation concept and tender documents for the rock and soil investigations and trial boring
  • Performance of inclinometer measurements and stabilization calculations
  • Routine checks of the endangered areas for a period of one year
   

Velden station, rock stabilization after boulder fall on the car park


Developer

DB Netz AG, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 175 KByte

Project

  • DB track section 5903 Nuremberg - Schirnding
  • There is a cut slope in the solid rock around the access road to the platform and the car park of Velden station
  • The cutting is approx. 190 m long and up to 15 m high
  • Repeated rock collapses
  • Boulder fall with a cubature of approx. 1.5 m³ at the car park level

Our services

  • Geotechnical investigative services
  • Assessment of the stability of slopes and inclines
  • Risk assessment
  • Elaboration of stabilization and renovation proposals
  • Cost estimate
  • Planning services: stages 3, 6 and 7 pursuant to HOAI for rock stabilization and collecting structures
  • Planning application pursuant to nature conservation laws
   

Rock rehabilitation in the
vicinity of Lungsdorf / Pegnitztal


Developer

Hartenstein district, Middle Franconia

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 178 KByte

Project

  • Northwest of the road through Lungsdorf there are potentially hazardous rock areas (pinnacles, boulders) with a cubature of 5-20 m³ in an approx. 20 m high rock formation
  • Danger to adjacent housing and infrastructural facilities through rock and boulder strikes

Our services

  • Geotechnical site survey
  • Concept design and project planning to stabilize the labile boulders
  • Project and structural engineering planning of stages 3-7 (inc. invitation to tender)
  • Static proofs and rockfall simulation
  • Specialist construction supervision and acceptance of the construction works
   

Stabilization of critical rock slopes in the Ruhr valley


Developer

City of Essen, environmental agency

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 172 KByte

Project

  • Re-evaluation of 20 slopes classed as critical in the southern part of Essen

Our services

  • Inspection of the interface structure and estimation of the key mechanical ratios of relevance for stabilization
  • Re-evaluation of the risks, localization of unstable areas
  • Recording of the relevant locations in photographs
  • Description of the relevant locations, inc. qualitative indication of the required stabilization measures
  • Classification into risk classes
   

Rock stabilization measures
on DB track section 5060 at Peilstein


Developer

DB Netz AG, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 137 KByte

Project

  • DB track section 5060 Neukirchen b. Sulzbach-Rosenberg - Weiden, km 1.700 to 2.100
  • Rock slope on the southern edge of the village of Peilstein
  • Length approx. 400 m on both sides of the railway line
  • Max. height approx. 35-40 m above track level
  • Repeated ingress of rock and boulders onto the track area following falls

Our services

  • Geotechnical investigative services
  • Geotechnical site survey of the cut slope with mountaineering inspection
  • Perusal of existing documents
  • Assessment of the stability of slopes and inclines
  • Risk assessment
  • Elaboration of stabilization and renovation proposals
  • Cost estimate
  • Concept design and construction support for remedial measures
   

Stabilization of nagelfluh rocks, Heilbronn-Klingenberg


Developer

City of Heilbronn, roads department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 174 KByte

Project

  • Above Theodor-Heuss-Straße and Felsenstraße are nagelfluh upper terrace gravels
  • Stones and boulders come loose from the almost vertical rock wall (up to approx. 10 m high and approx. 700 m long)
  • This is an established natural landmark and a bird protection area
  • Protection of the road threatened by rockfall

Our services

  • Geotechnical investigative and consulting services for rockfall protection
  • Inspection of the rock wall
  • Risk analysis
  • Study of the stabilization options
  • Cost estimate
   

Stabilization of rock slope, Illingen


Developer

DB Netz AG, Karlsruhe

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 193 KByte

Project

  • Protection of the DB track section 3274 threatened by rock fall and avalanche between km 1.480 and km 1.820
  • Cut slope approx. 8 m high
  • Dwelling at the top of the slope

Our services

  • Project and structural engineering planning pursuant to HOAI for the stabilization measures
  • Geotechnical inspection and assessment
  • Landscape management support plan
  • Environmental screening
  • Special species protection assessment
   

Rock stabilization at the road connecting the villages of Matting & Regensburg


Developer

District of Pentling, construction department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 155 KByte

Project

  • The road runs on the right bank of the Danube with steep rock cliffs and outcrops
  • Height up to 40 m above road level
  • The section of road to be inspected is approx. 3.2 km long

Our services

  • Geotechnical investigations of the rock sections
  • Assessment of the stability of slopes and inclines
  • Risk assessment
  • Elaboration of stabilization and renovation proposals
  • Review and evaluation of the functional effectiveness of the rock stabilization already in place
   

Rock stabilization at Büchenbronner Straße in Pforzheim


Developer

Karlsruhe Regional Administrative Authority

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 163 KByte

Project

  • Protection from threat of rockfall of rural road L 562 - Büchenbronner Straße in variegated sandstone
  • Cut slope approx. 10 m high
  • Length of section at risk approx. 140 m
  • Stabilization by means of rock-protection netting in conjunction with safety fences and individual safeguards

Our services

  • Geotechnical inspection and assessment
  • Project and structural engineering planning pursuant to HOAI for overnetting with high-strength steel wire mesh
  • Geotechnical support for cleaning works
   

Rockfall protection at Hartlmühle


Developer

Regensburg State Office for Construction, roads section

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 137 KByte

Project

  • Upgrading of road 2394 Laaber-Deuerling, in the vicinity of Hartlmühle
  • Construction of a gabion wall to protect against falling rock material
  • Steep rock-pierced slope above road 2394 over a length of 400 m, height of rock cliffs up to 35 m above road level
  • Extensive risks of stone, rock and boulder falls

Our services

  • Mountaineering inspection
  • Geotechnical site survey
  • Assessment of the stability of slopes and inclines
  • Risk assessment
  • Elaboration of stabilization and renovation proposals
  • Rockfall simulations
   

Rock stabilization, Krommenthal


Developer

DB Netz AG, Würzburg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 155 KByte

Project

  • Protection of the railway line threatened by rock fall and avalanche
  • DB track section 5200, Würzburg - Aschaffenburg
  • Rock stabilization in the village of Krommenthal
  • The two-track electrified DB track sections runs below outcrops of an approx. 25 m high rock slope
  • Erection of the rockfall protection fence and netting of approx. 100 m²

Our services

  • Geotechnical inspection
  • Planning services for the rockfall protection, project and structural engineering planning
  • Performance of project and structural engineering planning pursuant to HOAI § 42 and HOAI § 49 for stages 4 to 7
  • Preparation of application documents for nature conservation approval
  • Environmental screening
   

Rockfall protection, Windischeschenbach, DB track section 5050


Developer

DB Netz AG, Weiden

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 158 KByte

Project

  • The two-track non-electrified DB track section Weiden- Oberkotzau, km 14.270 to km 14.530 right of track and km 16.000 to km 16.200 left of track, runs in a cutting
  • The slopes are between 15 and 20 m high

Our services

  • Geotechnical inspection of the sections in respect of rock and boulder fall risks and rock avalanche risks after cleaning
   

Stabilization of Nägelesfels, vicinity of Bad Urach-Seeburg


Developer

Town of Bad Urach, civil engineering department

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 158 KByte

Project

  • 120 m wide, up to 30 m high cliff of massive limestone (natural landmark) with potential risk of rockfall and avalanches extending up to 30 m³ for road and dwellings
  • Development at the foot of the slope
  • Protected landscape
  • Stabilization through cleaning, rock nails, shotcrete seals and protective fencing

Our services

  • Mountaineering inspection
  • Stability analysis
  • Risk assessment
  • Project and structural engineering planning
  • Invitation to tender
  • Construction management and supervision
  • Inspection of the protective installations 10 years after completion
  • Indication of improvement measures
   

Rock slope at Hengsteysee lake, Hagen


Developer

Ruhrverband, Essen, Hagen

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 121 KByte

Project

  • Risks of rockfall and avalanche with cubatures of up to several cubic metres
  • The approx. 25 m high slope lies above a cycle and footpath on the northern bank of Hengsteysee lake
  • Length of section at risk approx. 300 m
  • Stabilization by means of rock-protection netting in conjunction with safety fences and individual safeguards

Our services

  • Recording all stabilization and hazard-relevant locations through geological mapping
  • Documentation and evaluation of the recorded risks
  • Stability calculations
  • Stability analysis, risk assessment
  • Renovation proposals
  • Geotechnical support
   

Dünkelberg quarry, visitor mine at Nachtigall pit, Witten


Developer

Westphalia-Lippe Landscape Association, Münster

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 178 KByte

Project

  • Expansion of the Zeche Nachtigall industrial museum
  • Entry of a further visitor mine in the area of the former Dünkelberg quarry
  • Rock stabilization above the mouth of the mine because rock and boulder strikes from the labile quarry wall cannot be excluded

Our services

  • Detailed geotechnical survey of the quarry wall above the planned mine opening
  • Rockfall simulation
  • Advice to the association on the invitation to tender for the works
  • Specialist construction supervision
  • Rockfall protection fence 1,000 kJ
  • TECCO netting approx. 200 m²
   

Rockfall protection for DB track section Landshut - Bayer. Eisenstein


Developer

DB Netz AG, Regionale Instandsetzung Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 154 KByte

Project

  • Single-track, non-electrified DB track section 5634 between Deggendorf and Grafling
  • Frequent rockfall and avalanche events in the vicinity of Wühn, in a cutting approx. 15 to 20 m deep, threaten rail services

Our services

  • Execution planning of rock stabilization works
  • Preparation of project specifications and schedule of works based on inspections of the terrain
  • Preparation of tender documents
  • Netting and stabilization of individual boulders by rock bolts
  • Netting covering an area of 750 m2, SPIDER system
  • 40 static-acting anchors (L = 6-8 m)
   

Stabilization of rock slope left of track in ice channel


Developer

DB Netz AG, Regionale Instandsetzung, Nürnberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 160 KByte

Project

  • Rockfall on DB track section 5850 Regensburg-Nuremberg / km 51.100 to 51.220, left of track
  • A fallen boulder was found on the crown of an approx. 8 m high supporting wall; further risks threaten railway operations
  • Investigation of the stability of the foundation of the supporting walls

Our services

  • Geotechnical inspection of the rock outcrops
  • Description of the relevant areas
  • Indication of required stabilization measures
   

Rock stabilization, Tristramschlucht


Developer

DB Netz AG, Southern Region, Munich

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 130 KByte

Project

  • Considerable risks of rock and boulder strike and avalanche in the very curvy single-track DB section 5741 between Bad Reichenhall - Berchtesgaden / km 16.300 to km 16.450
  • Threat to railway operations
  • Rocks have formed layered overhangs on the rocky banks and rocks are splitting off and falling
  • The pieces falling away have volumes up to 30 m³ and more

Our services

  • Geotechnical inspection of the rock outcrops
  • Description of the relevant areas
  • Indication of required stabilization measures
   

Rock stabilization, Matting


Developer

DB Netz AG, southern region, Nuremberg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 192 KByte

Project

  • Cleaning of rock sections of loose stones at DB track section 5851 Regensburg- Ingolstadt / km 10.200 to 12.805, right of bank

Our services

  • Planning services for rock stabilization
  • Preparation of the application and tender documents for the cleaning work
  • Supervision of cleaning works
  • Special inspection at regular intervals
   

Rock stabilization Mainleite, Wertheim, construction phases 1 to 5


Developer

Stuttgart Regional Administrative Authority, Bad Mergentheim construction management

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 142 KByte

Project

  • Rock strike and rockfall risks with individual boulders up to 15 m3 over approx. 6 ha in area
  • Up to 12 m high cliffs above rural road L 2310
  • 2.6 km long slope up to 65° steep
  • Elimination of rock strike and rockfall risks
  • Clearing work on the slope in sections (every 2 years) with grubbing out of tree trunks

Our services

  • Inspection of the terrain
  • Risk assessment
  • Stability assessment
  • Project and structural engineering planning pursuant to HOAl §55 & §64 for protective fencing, bolting and shotcrete seals, also berm stabilization for forest path on the slope
  • Indication of essential stabilization measures after forestry work
  • Local site management
  • Safety coordination for rock stabilization and forestry work with use of helicopters
   

Coschütz tunnel on BAB A17 Dresden - Prague


Developer

Saxony Highways Agency

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 161 KByte

Project

  • Construction of two new 2-tube motorway tunnels
  • Length 2,332 m
  • Standard cross-section 29t

Our services

  • Geotechnical investigation of the rock slope in the vicinity of Plaunschen Grund
  • Execution planning for the entrance blocks up to 18 m behind the stop walls of both tunnels
  • Stabilization of the rock slopes at both stop walls
  • Project and structural engineering planning for tunnel entrance and rock stabilization
  • Specialist geotechnical supervision of tunnel entrance and rock stabilization works
   

Anchoring of rock and renovation of climbing school at Stetten


Developer

German Alpine Association, Stuttgart Section, Waiblingen

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 757 KByte

Project

  • The climbing school is located in a former quarry south of Stetten, near Stuttgart
  • Securing the unstable sections identified, including expanding fissures and loose sheets of rock

Our services

  • Inspection of the rock slopes
  • Recording the condition of the rock outcrops and existing protective nets and trapping means
  • Elaboration of stabilization proposals
  • Cost estimate
  • Preparation of a report
  • Planning for protective fence up to 3,000 kJ, length approx. 260 m
   

Risk of rockfall in the Essen
city district


Developer

Essen City Authorities, Environment Office

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 112 KByte

Project

  • Mitigation measures against rockfall onto residential sites on Laupendahler Landstrasse 55, Essen
  • The rock walls at the site are 20 to 25 m high and are aligned almost vertically over a distance of approx. 150 m
  • A rockfall of approx. 1 m³ has occurred in the past

Our services

  • Geotechnical site investigation and report
  • Geotechnical mapping of rock outcrops
  • Planning of mitigation measures
  • Site supervision of installation of rockfall barriers, netting and rock bolts
   

Weißensteiner Steige, risk of rockfall


Developer

Stuttgart Regional Council, Department 42, Ludwigsburg

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 847 KByte

Project

  • Risk to road traffic on the B466 between station 2,200 and 2,400 from rockfall
  • The risk derives from the rock slope on the road cut on the adjacent side of the mountain, up to a vertical height of around 8 to 10 m, in parts overhanging

Our services

  • Site investigation and geotechnical mapping by mountaineering
  • Stability analysis of the rock slope
  • Risk assessment
  • Devising proposals for mitigation measures, including a cost estimate
   

Protection against rockfall,
B 19 Künzelsau - Gaisbach

Developer

Hohenlohekreis Land Council Office, Roadbuilding Department, Künzelsau

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 169 KByte

Project

  • Rockfall protection on the 3-lane road
  • On the side towards the slope there is a retaining wall up to 5 m high, with a slope inclined at up to approx . 40° over a distance of 1 km above it
  • Rockfall, volume approx. 1 m³ in January 2007 , across all 3 lanes and damaging the concrete skid wall on the valley side

Our services

  • Site inspection and documentation
  • Risk assessment
  • Indication of immediate measures
  • Investigation report with proposals for mitigation measures
  • Suggested execution plan, with cost estimate
  • Geotechnical site supervision
  • Rockfall simulation using ROCKFALL
   

Rockfall protection of DB railway line 3010, Koblenz - Perl, near Müden


Developer

DB Projektbau GmbH, RB Mitte

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 158 KByte

Project

  • Terraced former vineyard, with incline up to 45°
  • Above this, rock cliff with incline up to 70°
  • Existing safety measures under-dimensioned or no longer fit for purpose

Our services

  • Planning services for the mitigation measures
  • Geotechnical investigation and mapping of the site
  • Planning the construction element pursuant to HOAI, § 55, Lph 2 to 4, designing the structural framework pursuant to HOAI, § 64, Lph 2 and 3
  • Rockfall simulation using ROCKFALL
   

Mitigation measures, Russenstein, Heidelberg


Developer

Heidelberg City Council, Underground Civil Engineering Dept.

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 120 KByte

Project

  • Granite cliffs, up to 25 m high, in a slope approx. 80 m high and 300 m long
  • Risks of rockfall up to 80 m³ for the road running along the foot of the slope
  • Securing the area by clearing loose rock, rock bolting and fencing

Our services

  • Site investigation by mountaineering
  • Slope stability analysis
  • Risk assessment
  • Re-evaluation of rockfall risk by follow-up inspection
  • Design of construction element and structural framework for measures
  • Rockfall simulation using ROCKFALL
   

Tullauer Tunnel;
DB Section Crailsheim - Eppingen


Developer

DB ProjektBau GmbH, Stuttgart

Dr. Spang GmbH


Download the project description
Dr. Spang GmbH PDF, 155 KByte

Project

  • Precuts and portals of the tunnel in banked shell limestone, height up to approx. 15 m, practically vertical
  • Strongly weathered intermediate layers, in part undercut
  • Numerous rockfalls in the past, as far as the track area
  • Investigation site is in the Kochertal nature protection area, to the south of Schwäbisch Hall

Our services

  • Site investigation by mountaineering
  • Stability analysis
  • Risk assessment
  • Proposals for renovation; planning of construction elements for safety measures
   
   

K 1441, Neidlinger Steige

Developer

Stuttgart Regional Council, Department 44, Stuttgart

Dr. Spang GmbH

Download the project description
Dr. Spang GmbH PDF, 218 KByte

Project

  • Rock cliffs up to 50 m in height over approx. 1.5 km above the roadway
  • Risk of rockfall for traffic on the road
  • Traffic accidents in the past due to rocks being dislodged

Our services

  • Taking oblique aerial photos
  • Site investigation by mountaineering
  • Stability analysis
  • Risk assessment
  • Designing the construction element pursuant to HOAI § 55 (1), Lph 1 to 3
  • Rockfall simulation using ROCKFALL
   

Protecting the S 2230 in the Altmühltal valley against risks of rockfall

Developer

Ingolstadt Roadbuilding Department

Dr. Spang GmbH

Download the project description
Dr. Spang GmbH PDF, 153 KByte

Project

  • 1,000 m long road section in Jura limestone
  • Slope rising to up to 100 m above the road level
  • Practically vertical rock faces up to 30 m
  • Risk of rockfall of up to 100 m³ for the road running along its foot
  • A number of rockfalls already in the past, some resulting in fatal accidents
  • Located in the Altmühltal nature park

Our services

  • Oblique aerial photographs
  • Site investigation by mountaineering
  • Stability analysis
  • Risk assessment and zoning
  • Rockfall simulation using ROCKFALL
   

Protecting the B 466, Gutenberger Steige, against risks of rockfall

Developer

Stuttgart Regional Council, Department 44, and Kirchheim / Teck Roadbuilding Office

Dr. Spang GmbH

Download the project description
Dr. Spang GmbH PDF, 353 KByte

Project

  • 1.75 km long road section for renovation, in Jura limestone
  • Slope rising to up to 150 m above the road level
  • Practically vertical rock faces up to 70 m
  • Side cutting slopes up to approx. 10 m in height
  • Risk of rockfall up to 300 m³ for the road
  • A number of rockfalls previously
  • Located in a nature protection area and water protection area

Our services

  • Oblique aerial photographs
  • Site investigation by mountaineering
  • Stability analysis
  • Risk assessment
  • Design of construction element and structural framework
   

Securing the Kehlsteinstrasse
near Berchtesgaden against
risks of rockfall and rockfall

Developer

Traunstein Roadbuilding Department

Dr. Spang GmbH

Download the project description
Dr. Spang GmbH PDF, 181 KByte

Project

  • 800 m long road section in Dachstein limestone
  • High Alpine slope to 1,837 m above sea level
  • Practically vertical rock faces up to 150 m
  • Embankments up to approx. 20 m in height
  • Rockfall risks up to 860 m³ for the road, which is used by tourists
  • Many rockfalls in the past
  • Located in a protected area of natural beauty

Our services

  • Oblique aerial photographs
  • Site investigation by mountaineering
  • Stability analysis
  • Risk assessment
  • Rockfall simulation using ROCKFALL

nach oben TOP

 
Dr. Spang GmbH

Company head office Witten

Phone: 02302 - 9 14 02 -0
Fax:  02302 - 9 14 02 -20
E-Mail zentrale@dr-spang.de

Esslingen/Neckar

Phone: 0711 - 351 30 49 -0
Fax:  0711 - 351 30 49 -19
E-Mail esslingen@dr-spang.de

Frankfurt am Main

Phone: 069 – 678 6508 – 0
Fax: 069 – 678 6508 – 20
E-Mail frankfurt@dr-spang.de

Freiberg/Saxony

Phone: 03731 - 79 87 89 -0
Fax:  03731 - 79 87 89 -20
E-Mail freiberg@dr-spang.de

Nuremberg

Phone: 0911 - 9 64 56 65-0
Fax:  0911 - 9 64 56 65-5
E-Mail nuernberg@dr-spang.de

Naumburg/Saale

Phone: 03445 - 762 - 25
Fax:  03445 - 762 - 20
E-Mail naumburg@dr-spang.de

Hamburg

Phone: 040 – 524 73 35-0
Fax:  040 – 524 73 35-20
E-Mail hamburg@dr-spang.de

Berlin

Phone: 0331 - 231843 - 0
Fax:  0331 - 231843 - 20
E-Mail berlin@dr-spang.de

Munich

Phone: 089-2 77 80 82-60
Fax:  089-2 77 80 82-90
E-Mail muenchen@dr-spang.de

Download

Project descriptions

  • Rock stabilization measures on trunk roads in the Bayreuth district
    Dr. Spang GmbH PDF, 814 KByte
  • B27 Würzburg - Karlstadt road, rock stabilization measures south of Karlstadt
    Dr. Spang GmbH PDF, 648 KByte
  • Regensburg municipal area, Mattinger Straße / rocky slopes below the Max-Schultze-Steig nature conservation zone
    Dr. Spang GmbH PDF, 556 KByte
  • DB section 5634 Landshut - Bayerisch-Eisenstein, km 87.920 near Arzting
    Dr. Spang GmbH PDF, 1183 KByte
  • Rockfall risks on the Kalbenstein hill
    Dr. Spang GmbH PDF, 831 KByte
  • Stone and rockfall risks in Artelshofen
    Dr. Spang GmbH PDF, 711 KByte
  • Rockfall protection for DB track section 5634
    Dr. Spang GmbH PDF, 1124 KByte
  • Rock stabilization on track section 5210 Gemünden-Bad Kissingen
    Dr. Spang GmbH PDF, 882 KByte
  • Rock and slope stabilization measure on the RN27 road at Michelau, Luxembourg
    Dr. Spang GmbH PDF, 733 KByte
  • Rockfall events at Zachenberg, DB section Landshut-Bayerisch Eisenstein
    Dr. Spang GmbH PDF, 860 KByte
  • Rock stabilization, Förtschendorf
    Dr. Spang GmbH PDF, 575 KByte
  • Stabilization of
    Steinerne Wehrberg

    Dr. Spang GmbH PDF, 432 KByte
  • Rock stabilization on the Vilshofen - Ortenburg DB track section
    Dr. Spang GmbH PDF, 385 KByte
  • Rock stabilization, Flöteberg
    Dr. Spang GmbH PDF, 285 KByte
  • Rock stabilization, Krappenhofen by DB track section 5850
    Dr. Spang GmbH PDF, 330 KByte
  • Road 2162, renewal of overnetting
    Dr. Spang GmbH PDF, 294 KByte
  • Rockfall protection, Gewann Steinberg, Eberstadt
    Dr. Spang GmbH PDF, 288 KByte
  • Rock stabilization for the children’s play area, Müllenberg
    Dr. Spang GmbH PDF, 383 KByte
  • Slope stabilization, Förtschendorf
    Dr. Spang GmbH PDF, 531 KByte
  • Rock stabilization, Couragefels
    Dr. Spang GmbH PDF, 970 KByte
  • Avalanche and rockfall stabilization, Steinenkircher Steige
    Dr. Spang GmbH PDF, 886 KByte
  • Highway 2236 (Alfeld-Hersbruck) at Regelsmühle
    Dr. Spang GmbH PDF, 939 KByte
  • Slope stabilization, B37 Binau-Neckargerach
    Dr. Spang GmbH PDF, 544 KByte
  • Rockfall risk in the vicinity of the turbine house at the Saidenbach reservoir
    Dr. Spang GmbH PDF, 803 KByte
  • Rockfall and avalanche stabilization by the A8 motorway, Drackensteiner Hang
    Dr. Spang GmbH PDF, 881 KByte
  • Stabilization of rock formations on the Hirtenberg im Pegnitztal
    Dr. Spang GmbH PDF, 164 KByte
  • Precipice stabilization, Hoher Stein, Dresden
    Dr. Spang GmbH PDF, 154 KByte
  • Isar eastern bank, geological examination, evaluation, concept creation and monitoring of the steep slopes between Grünwalder bridge and Marienklausensteig
    Dr. Spang GmbH PDF, 168 KByte
  • Velden station, rock stabilization after boulder fall on the car park
    Dr. Spang GmbH PDF, 175 KByte
  • Rock rehabilitation in the vicinity of Lungsdorf / Pegnitztal
    Dr. Spang GmbH PDF, 178 KByte
  • Stabilization of critical rock slopes in the Ruhr valley
    Dr. Spang GmbH PDF, 172 KByte
  • Rock stabilization measures on DB track section 5060 at Peilstein
    Dr. Spang GmbH PDF, 138 KByte
  • Stabilization of nagelfluh rocks, Heilbronn-Klingenberg
    Dr. Spang GmbH PDF, 174 KByte
  • Stabilization of rock slope, Illingen
    Dr. Spang GmbH PDF, 193 KByte
  • Rock stabilization at the road connecting the villages of Matting & Regensburg
    Dr. Spang GmbH PDF, 155 KByte
  • Rock stabilization at Büchenbronner Straße in Pforzheim
    Dr. Spang GmbH PDF, 163 KByte
  • Rockfall protection at Hartlmühle
    Dr. Spang GmbH PDF, 137 KByte
  • Rock stabilization, Krommenthal
    Dr. Spang GmbH PDF, 155 KByte
  • Rockfall protection, Windischeschenbach, DB track section 5050
    Dr. Spang GmbH PDF, 158 KByte
  • Stabilization of Nägelesfels, vicinity of Bad Urach-Seeburg
    Dr. Spang GmbH PDF, 158 KByte
  • Rock slope at Hengsteysee lake, Hagen
    Dr. Spang GmbH PDF, 121 KByte
  • Dünkelberg quarry, visitor mine at Nachtigall pit, Witten
    Dr. Spang GmbH PDF, 178 KByte
  • Rockfall protection for DB track section Landshut - Bayer. Eisenstein
    Dr. Spang GmbH PDF, 154 KByte
  • Stabilization of rock slope left of track in ice channel
    Dr. Spang GmbH PDF, 160 KByte
  • Rock stabilization, Tristramschlucht
    Dr. Spang GmbH PDF, 130 KByte
  • Rock stabilization, Matting
    Dr. Spang GmbH PDF, 192 KByte
  • Rock stabilization Mainleite, Wertheim, construction phases 1 to 5
    Dr. Spang GmbH PDF, 142 KByte
  • Coschütz tunnel on BAB A17 Dresden - Prague
    Dr. Spang GmbH PDF, 161 KByte
  • Anchoring of rock and renovation of climbing school at Stetten
    Dr. Spang GmbH PDF, 757 KByte
  • Risk of rockfall in the Essen city district
    Dr. Spang GmbH PDF, 112 KByte
  • Weißensteiner Steige, risk from falling rock and loose stones
    Dr. Spang GmbH PDF, 847 KByte
  • Protection against falling stones B 19 Künzelsau - Gaisbach
    Dr. Spang GmbH PDF, 169 KByte
  • Securing DB Section 3010, Koblenz - Perl, near Müden, asgainst risks from falling stones and rockfall
    Dr. Spang GmbH PDF, 158 KByte
  • Securing rock, Russenstein, Heidelberg
    Dr. Spang GmbH PDF, 120 KByte
  • Tullauer Tunnel; DB Section Crailsheim - Eppingen
    Dr. Spang GmbH PDF, 155 KByte
  • K 1441, Neidlinger Steige
    Dr. Spang GmbH PDF, 218 KByte
  • Protecting the S 2230 in the Altmühltal valley against risks from rockfall and falling stone
    Dr. Spang GmbH PDF,153 KByte
  • Protecting the B 466, Gutenberger Steige, against risks from falling stones and rockfall
    Dr. Spang GmbH PDF,353 KByte
  • Securing the Kehlsteinstrasse near Berchtesgaden against risks from rockfall and falling stones
    Dr. Spang GmbH PDF,181 KByte

  • Information

ROCKFALL
Simulation Program

  • Dr. Spang GmbH