specification sheet for approval

Transcription

1

2 BMVIT-327.2/6-II/ST2/2 specification sheet for approval (Translation from the German original has not been certified by any authorities) Object of approval: ANP Micropiles SAS 55 with load - bearing s made of reinforcing steel bar ARI-G-55 with diameters 2, 25, 26, 28, 3, 32, 36, 4 and 5 mm and S 555/7 diameter 63,5 mm with thread ribs (B55B) for temporary, semipermanent (extended short term) or permanent use Approval holder: ANP - GMBH Christophorusstraße 2 56 Elsbethen/Austria Manufacturer of load bearing and thread components: STAHWERK ANNAHÜTTE Max Aicher & Co. KG 8344 Ainring-Hammerau/Germany Manufacturer of micropile- ANP - GMBH specific components Christophorusstraße 2 and corrosion protection: 56 Elsbethen/Austria External quality control: TVFA TU Wien Area of validity: Austrian Republic Road Administration Reference: ÖNORM EN 499: 25 Execution of special geotechnical construction work (special civil engineering, foundations construction / foundation engineering) - piles with small diameters (micropiles) GZ: BMVIT-327.2/8-II/ST2/29 Stahlwerk Annahütte: hot rolled, hardened and tempered reinforcing steel with left-hand threads ARI-G-55 with diameters 2, 4, 6, 2, 25, 26, 28, 3, 32, 36, 4 and 5mm according to ÖNORM B 42-7 (BSt 55) ductility / tensile properties Agt 5% according to ONR 242-7

3 ANP GMBH Reference: GZ: BMVIT-327.2/7-II/ST2/29 Stahlwerk Annahütte: hot rolled, hardened and tempered reinforcing steel with left-hand threads S 555/7 diameter 63,5 mm according to ÖNORM B 42-7 (Bst 55) ductility / tensile properties Agt 5% according to ONR GZ: BMVIT-327.2/2-II/ST2/29 Stahlwerk Annahütte: threaded sleeve joints and threaded anchorage / anchorage couplers for reinforcing steel ARI-G-55 with thread ribs, nominal diameters 2, 4, 6, 2, 25, 26, 28, 3, 32, 36, 4 and 5 mm based on ISO/FDIS 5835-,2 and ÖNORM B 42-7 and respectively ONR GZ: BMVIT-327.2/8-II/ST2/29 Stahlwerk Annahütte: threaded sleeve joints and threaded anchorage / anchorage couplers for steel bars S 555/7 (Bst 55) with thread ribs, nominal diameter 63,5mm based on ISO 5835-,2 and ÖNORM B 42-7 and ONR The approval comprises 2 pages and 7 annexes.

4 ANP GMBH I General Terms This approval certificate is proof of the usability and applicability of the object of approval in accordance with the state building regulations (BMVIT, Federal Ministry for Transport, Innovation and Technology). The approval is granted and on the basis of nonharmonized technical specifications and without prejudice to third party rights 2 The approval holder is responsible for the building product s conformity with the approval and data sheet for the approval and guarantees any assured properties. 3 The approval refers only to the approval holder s and manufacturer s building product. 4 The BMVIT, Federal Ministry for Transport, Innovation and Technology is authorized to check at the license holder s expense whether the regulations/provisions of this approval and the data sheet are complied with. 5 The approval is not granted irrevocably. Provisions may be amended due to new technical findings and standards. 6 The approval certificate may only be copied in its entirety. Texts and drawings in advertising brochures may not contradict the approval certificate. Contents II Special Terms General 2 Reference standards 3 Description of the micropile system 4 Field of application 5 Construction material and construction product 5. Micropile 5.. Properties and classification of the load bearing 5..2 Requirements concerning the load capacity of micropile system 5.2 Pile head 5.2. Pile head design oad transfer on to the structure 5.3 Coupling 5.4 Grouting 6 Service life 6. Corrosion protection 6.2 Exposure to corrosion 6.3 Types of micropiles 6.3. Micropiles for short term use and semi-permanent use Micropiles for permanent use Micropiles with standard corrosion protection Micropiles with double corrosion protection 7 Installation of micropiles 8 Inspections 8. Material tests 8.2 oad tests 7 annexes

5 ANP GMBH General The planning, dimensioning, construction, inspection and supervision of micropiles may only be carried out by companies with expertise, experience and qualified personnel. Responsibilities for planning, dimensioning, construction, inspection and supervision have to be agreed on by contract for the implementation of a building project. The manufacturer guarantees that the micropiles and the corrosion protection are consistent with the approval. 2 Reference standards ÖRNOM EN 499: 25 ÖNORM EN 99: 23 ÖNORM EN 997-: 24 ÖNORM B 477: 2 Execution of special geotechnical construction work (special civil engineering, foundations construction/ foundation engineering) - piles with small diameters (micropiles) Eurocode Basis of structural design Eurocode 7 Geotechnical design - Part : General rules Steel for the reinforcement of concrete - Requirements, classification and conformity assessment ÖNORM EN 992--: 25 Eurocode 2: Design of concrete structures - Part -: General rules and rules for buildings ISO 5835-,2: 29 Steels for the reinforcement of concrete Reinforcement couplers for mechanical splices of bar Part : Requirements Part 2: Test methods ÖNORM EN ISO 563-: 22 Steel for the reinforcement and prestressing of concrete - Test methods - Part : Reinforcing bars, wire rod and wire ETAG 3: 22 ÖNORM EN 26-: 2 ÖNORM EN ISO 46: 2 ÖNORM EN 537: 2 ÖNORM EN 25-,2: 23 ÖNORM EN ISO 9: 2 ÖNORM EN 445: 28 ÖNORM EN 446: 28 ÖNORM EN 447: 28 Guideline for European technical approval of post-tensioning kits for prestressing of structures Concrete - Part : Specification performance, production and conformity Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods Execution of special geotechnical work - Ground anchors Protection of metallic materials against corrosion - Corrosion likelihood in soil Part : General Part 2: ow alloyed and non alloyed ferrous materials Quality management systems - Requirements Grout for prestressing tendons - Basic requirements Grout for prestressing tendons - Test methods Grout for prestressing tendons - Grouting procedures

6 ANP GMBH 3 Description of the micropile system The load-bearing of the ANP Micropile SAS 55 is a throughout screwable left-hand reinforcement steel bar with thread ribs ARI-G-55 with diameters 2, 25, 26, 28, 3, 32, 36, 4 and 5mm and S 555/7, diameter 63,5mm for geotechnical applications. The use of the reinforcement steel including the screwed coupler and anchorage is derived from the existing BMVIT approval of the system. The reinforcement steel is classified as an B55B according to ÖNORM B 477. The micropile is put into the center of a pre-drilled borehole and is then grouted with cement grout. The pile head is made up of a straight square plate locked with nuts (anchor nut / lock nut) or it s made up of a nut-locked cylindrical cast steel anchor piece. Coupling is possible with a coupler with or without lock nut. Service life of micropile systems: - micropiles for temporary use (service life max. 2 years) - micropiles for extended short term use in consideration of corrosionrate (service life 2-5 years) - permanent micropiles (service life up to years) with standard corrosion protection by means of cement mortar covering - permanent micropiles (service life up to years) with double corrosion protection by means of tubing according to ÖNORM EN537 Following annexes describe further details of the micropile system: Annex : Annex 2: Annex 3: Annex 4: Annex 5 Annex 6: Annex 7 and 8: Annex 9: Annex to 5: Annex 6 and 7: drawing of micropile system for temporary use, pile head options and couplings drawing of micropile system for semi-permanent use, pile head options and couplings drawing of permanent piles with standard corrosion protection (cement mortar covering), pile options and couplings drawing of permanent piles with double corrosion protection according to ÖNORM EN 537, pile head options and couplings pile head options with alternative anchorage (anchor piece with nut lock) center distance and edge distance of the micropile system with pile head plate and anchor piece, additional reinforcement, torque for coupling and anchorage data for steel bar with thread ribs ARI-G-55, diameters 2-5mm and S555/7, diameter 63,5mm loss of load capacity of the micropile due to corrosion accessories and components of corrosion protection with dimensions and material grade production of micropiles, factory-made of corrosion protection, transport and storage, installation

7 ANP GMBH 4 Field of application Pile foundations serve to transfer building loads to deeper layers of ground and limitation of deformations according to the principles for the execution of geotechnical works. The piles may be used only for axial tension, pressure and alternating load. The execution principles for construction are stated in ÖNORM EN 499 and comprise information about pile foundation, soil examination, construction material and products, dimensioning as well as the installation of piles including tests and supervision. The principles according to ÖNORM EN 99 are to be considered of structural design be adhered to ÖNORM EN 997- contains further geotechnical dimensioning rules. Compliance with following standards is necessary: - The foundation has to be calculated with regard to load transfer into the pile head (additional reinforcement, punching). - With soils which allow lateral deflection of the pile, the buckling safety has to be clarified either by calculation or test loading. 5 Construction material and construction product 5. Micropile 5.. Properties and classification of the load bearing A heat-treated concrete reinforcing steel bar from the rolling heat ARI-G-55, diameters 2-5 and S555/7, diameter 63,5, with left-hand thread ribs may be used as a load bearing reinforcement steel B55B according to ÖNORM B 477. Weldability and bending property are not relevant for the intended geotechnical use. Please find the parameters of the reinforcing steel in annex 7 and 8. The reinforcement steel is classified as B55B according to ÖNORM B 477. The reinforcement steel with thread ribs can also be used for a lower steelgrade than B55B. The reinforcing steel bars fulfill the requirements of ÖNORM EN 992--, see appendix C. The requirements concerning bond effect in the pile length of the load bearing are fulfilled by thread ribs of the steel bar. For extended short term service life of the micropile system, a hot-dip galvanized surface coating of the steel bar may be carried through according to ÖNORM EN ISO Requirements concerning the load capacity of micropile system The following requirements have to be complied with: - The micropile s tensile load capacity, consisting of the components pile (reinforcement steel B55B), pile head and coupler, has an efficiency of % in respect of the characteristic ultimate load of the support load bearing according to ÖNORM EN 499. In case of a failure the system shows ductile forming. - In case of an anchorage or coupler failure the elongation value measured at the steel bar must not be below Agt = 3,5 %.

8 ANP GMBH - The rated value for the micropile s ultimate limit state is, according to ÖNORM EN 992--, to be set with a partial safety factor of,5 when reaching a yield strength F p.2. The soil conditions have to be measured in accordance with ÖNORM EN ÖNORM EN 99 applies to the soil support capability. - With a torque moment - according to annex 6 - under tensile load of the anchorage s or coupler s ultimate limit state a slip, mm is kept according to ISO A slip has to be set at up to, mm on a non-torqued coupler, with a pile diameter of 63,5mm up to 2, mm. As fatigue strength parameter a stress range stress value of,6 R p.2 is proven: - 2 to 32 mm: 9 N/mm² - 36 and 4 mm: 8 N/mm² - 5 and 63,5 mm: 6 N/mm² Rsk for load N = 2 6 cycles with a - When a corrosion rate is intended then the loss of cross section has to be considered with proof of load capacity. Please refer to annex Pile head 5.2. Pile head design The pile head design is either made up of pile head plate fixed by nuts (anchor nut / locknut) or a torqued cylindrical anchor piece with or without bursting reinforcement. When an anchor piece is used, a additional bond length has to be complied with according to annex 5. The connection from the micropile in the foundation body demands both with semi-permanent and permanent piles with standard corrosion protection a pile neck sheating by means of a plastic corrugated sheathing to seal a possible construction joint. Details about the corrosion protection system s parameters, accessories, components and materials see annex to 4. The torque moments are listed in annex oad transfer on to the structure oad transmission from the foundation body to the pile head can be carried out with or without additional reinforcement (bursting reinforcement). Design criteria are the requirements according to ETAG 3. With the following values an efficiency of % with additional reinforcement and an efficience of 3% without additional reinforcement is achieved related to the characteristic breaking force of the load bearing : - concrete compressive strength at time of applied load 25 N/mm² (cube 5 mm) - minimum concrete quality C 2/25 according to ÖNORM EN center distance and edge distance of the micropile system with end anchorage by means pile head plate or anchor piece, with or without additional reinforcement (bursting reinforcement) according to annex 6

9 ANP GMBH 5.3 Coupling The load bearing can be coupled by couplers. The coupler has to be locked with nuts in case of tensile and alternating load. In case of compression load the coupler has to be secured against unscrewing with heat shrink sleeve. When temporary and permanent piles with sheathing in accordance with ÖNORM EN 537 are used, locking might be dispensed with in case of tensile loads. A locking device to prevent unscrewing is required. Data concerning coupler parameters and material see annex 2.The torque moments are listed in annex Cement grout An outer cement grout cover of installed micropiles to the borehole wall is conditional of manufacturing. ÖNORM EN comprises approaches for the required minimum covering allowing for the aggressiveness classes (see ÖNORM EN 26-). Spacers are used to position the pile concentrically. Cement grout is used to build the outer body (see ÖNORM EN 499). The water-cement ratio has to be adapted to the building site conditions. The corrosion protection of the permanent pile with double corrosion protection (DCP) is build up by a corrugated sheathing with minimum wall thickness, mm and an inner cement grout cover between corrugated sheathing and pile of at least 5 mm. This equates the corrosion protection of the permanent anchor s bond length according to ÖNORM EN 537. The pile is positioned concentrically either with a cord or a mat spacer. Both the corrosion protection and the inner cement grout cover are applied in the factory. The cement grout used complies with the standards of ÖNORM EN 445, ÖNORM EN 446 and ÖNORM EN Service life of the micropile construction 6. Corrosion protection The micropile system at hand uses the following methods to reach the desired service life: - no separate measures for temporary use (max. 2 years) - allowance for corrosion rate in case of limited use for semi-permanent service life - surface coating by hot dip galvanizing - encapsulation is due to the system by designing an grout body (standard corrosion protection) for permanent use with the required minimum covering - sheathing (double corrosion protection - according to ÖNORM EN 537) for permanent use Further requirements concerning the corrosion protection of semi-permanent micropiles and micropiles with standard corrosion protection have to be derived from a critical assessment of the building and ambient conditions. Even with an early breakdown of single s the bearing capacity of the micropile foundation has to be assured. The application of single s is not intended. Corrosion protection by means of corrosion rate may only be used with a statistically secured number of s (redundant system - to increase the reliability of the system).

10 ANP GMBH 6.2 Exposure to corrosion To evaluate exposure to corrosion of metallic material in soil according to ÖNORM EN 25 -,2 shall be used. Exposure to corrosion is classified as: - low - medium - high The most important physical and chemical parameters of soil and foundation materials are dealt with in ÖNORM EN Appendix B of the norm contains detailed data for soil classification. An evaluation of the different exposures to corrosion is done by means of an informative table with essential soil parameters. These parameters are the basis for the indication of size concerning the respective corrosion rate of the micropile. Criteria for exposure to erosion in soils soil parameters ventilation soil properties / composition soil moisture neutral salt concentration exposure to corrosion in soil ow medium high moderate to very good predominantly sand, gravel, weathered rock (coarse or medium dispersed/mixed: rock, sand, clay) low (drainageable) ow bad to moderate high percentage of, silt (medium dispersed to finely dispersed) generally medium (moist) Possibly increased very bad to bad High percentage of clay (finely dispersed) industrial waste, de-icing salt generally high, floodplain Possibly high ph-value 5 to 8 5 to 8 5 to 8 specific resistance [ m] > 7 to 7 < with ph- values < 5 and > 8 an upgrade is necessary: low medium medium high high limited use DCP according ÖNORM EN Types of micropiles 6.3. Micropiles for short term use and semi-permanent use Annex contains a schematic drawing of the temporary micropile. The micropile has to be center positioned in the borehole. For temporary use no further measures for corrosion protection have to be taken. If exposure to corrosion is high, corrosion is avoided by a cement grout cover 5 mm.

11 ANP GMBH The coupler must be secured against unscrewing by means of a heat shrink sleeve under tensile and compression load. Optionally, a contact coupler may be used only under compression load. Under alternating load the coupler has to be secured with lock nuts. Annex 2 contains a schematic drawing of the semi-permanent micropile. Pile neck sheathing and plastic corrugated sheathing are used for the connection between the micropile and the foundation body. The coupler must be secured with lock nuts under tensile and alternating load. (a fixing with lock nuts is required). Under compressive load the coupler has to be fixed against unscrewing by means of a heat shrink sleeve. Optionally, a contact coupler may be used only under compression load. The planned service life and the soil s exposure to corrosion determine the size of the corrosion rate. The cement grout cover is at least 5 mm. The reference values for the corrosion of the micropile in soil are derived from results of long-term storage. The corrosion rate is stated for a low, medium and high exposure to corrosion and a service life of 2, 7, 3 and 5 years. The Rounding parameter is, mm. The corrosion rates mentioned here for blank steel and galvanized steel are not relevant in this case because the micropile is center positioned in the borehole and then grouted with cement mortar. However, the corrosion rates are mentioned here are a relevant output variable for the corrosion of steel. With consideration of a cement grout cover of at least 5 mm a slowing down of the carbonation process dependent on exposure to corrosion in soil of steel is achieved and the corrosion rate is reduced. Reference value for corrosion rate under soil aggressiveness service life in years pile type A B A+C B+C A B A+C B+C A B A+C B+C A B A+C B+C corrosion rate in mm under exposure to corrosion low medium high,2,4,2,5,2,4,2,6,2,4 DCP,2,5,4 DCP DCP A blank steel, not grouted B galvanized steel, zinc coating layer thickness 5µm, not grouted C cement grout cover 5 mm DCP double corrosion protection according to ÖNORM EN 537

12 ANP GMBH Annex 9 contains details concerning the loss of a micropile s load-bearing capacity due to corrosion. Therewith also the corrosion at the coupling is covered when the coupler s cement grout cover is 5 mm Micropile for permanent use Micropile with standard corrosions protection by means under cement grout cover Annex 3 contains a drawing of the permanent micropile with standard corrosion protection. The pile neck has to be provided with a pile neck casing as with the semi-permanent pile. For the coupling the same set up shall be applied as with the semi-permanent micropile. The permanent pile s corrosion protection is achieved by means of encapsulation in a grout body. The required cement grout cover is dependent on soil class and is specified in relevant european geotechnical standards. The crack width under tensile load is limited to,2 mm. For micropiles with coupling the required minimum cement grout cover shall correspond to the coupler s external diameter (including heat shrink sleeve). Reference values for the required minimum covering exposure to corrosion in soil cement grout cover in mm compression load tension load low medium 3 4 high DCP according to ÖNORM EN Micropile with double corrosions protection (DCP) according to ÖNORM EN 537 Annex 4 contains a schematic drawing of the permanent micropile with DCP according to ÖNORM EN 537. The essential corrosion protection components are: pile shaft: Corrugated sheathing, mm with internal cement grout thickness 5 mm - distance between load - bearing and corrugated sheathing. coupling: pile neck: External cement grout covering mm to the borehole wall. The ground - facing pile end is enclosed by a plastic cap. The coupler has to be torqued with nuts only with alternating load. With compression load a contact coupler may be used instead. The load - bearing is sealed against the corrugated sheathing with tape via an end or injection cap. The corrugated sheathing of the pile shaft is lead into the foundation body.

13 ANP GMBH 7 Installation of micropiles Instructions for installation of micropiles and for the production of the factory-made corrosion protection can be found in annex 5 and 6. Micropiles may only be installed by professional staff in compliance with the listed procedural requirements and installation instructions of the approval holder. 8 Inspections 8. Material tests The manufacturer of micropiles has to carry out internal production and quality control regulated by ÖNORM EN ISO 9. These norms refer to the: - production of micropile components - production of the corrosion protection system Internal and external quality and production control of the micropile components are regulated by BMVIT approvals (see reference approvals on page and 2. The production of the pile head plate may also be carried out by the manufacturer of the corrosion protection system according to specific dimensions. The manufacturer is then involved in internal quality control for the plates. The external control has to be carried out by an accredited inspection authority based on a supervision contract. Additionally, the scope of internal control is specified in the supervision contract. The approval holder and the external inspection authority have to conclude a supervision contract. External control has to be executed once a year. The results have to be submitted in a report. 8.2 oad tests oad tests have to be made and documented at the building site where required in accordance with ÖNORM EN 499.

14 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs temporary micropile Annex tension load compression load alternating load / 4a 3 3 tr 4 / 4a 4 tr tr or steel bar with thread ribs 2 hex nut 2a hex nut - cast iron 3 pile head plate 4 lock nut, short 4a lock nut, short - cast iron 5 lock nut, long 6 coupler 7 contact coupler 8 heat shrink sleeve spring basket spacer 3 cement grout cover 4 additional reinforcement steel bar ,5 99 min. borehole - micropile for temporary use without coupler with coupler service life in years up to 2 type of pile A B A + C B + C corrosion rate in mm under exposure to corrosion low medium high,2 A - blank steel, not grouted B - galvanized steel, zinc coating layer thickness 5 µm, not grouted C - cement grout covering 5 mm t R 5 mm [ 2-32 ] t R 2 mm [ 4-63,5 ]

15 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs semipermanent micropile Annex 2 tension load compression load alternating load / 4a 3 3 tr 4 / 4a 4 tr tr / 4a or / 4a steel with thread ribs 2 hex nut 2a hex nut - cast iron 3 pile head plate 4 lock nut, short 4a lock nut, short - cast iron 5 lock nut, long 6 coupler 7 contact coupler 8 heat shrink sleeve spring basket spacer 3 cement grout cover 4 additional reinforcement 7 pile neck sheathing steel bar ,5 99 min. borehole - micropile for semipermanent use without coupler with coupler t R 5 mm [ 2-32 ] t R 2 mm [ 4-63,5 ] service life in years type of pile A B A+C B+C A B A+C B+C A B A+C B+C corrosion rate in mm under exposure to corrosion low medium high,2,2,4,6,2,4,5,2 DCP,4,5,4 DCP DCP A - blank steel bar, not grouted B - galvanized steel, zinc coating layer thickness 5 µm, not grouted C - cement grout covering 5 mm DCP - double corrosion protection acc. to ÖNORM EN 537

16 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs permanent micropile with standard corrosion protection Annex 3 tension load compression load alternating load / 4a / 4a tr 4 tr tr / 4a or / 4a steel bar with 6 coupler thread ribs 7 contact coupler 2 hexnut 8 heat shrink sleeve 2a hexnut - cast iron spring basket spacer 3 pile head plate 3 cement grout cover 4 lock nut, short 4 additional 4a lock nut, short - cast iron reinforcement 5 lock nut, long 7 pile neck sheathing exposure to corrosion in soil low medium high min. grout covering in mm compression load 25 3 tension load 35 4 DCP according to ÖNORM EN 537 t R 5 mm [ 2-32 ] t R 2 mm [ 4-63,5 ] steel bar ,5 without coupler with coupler without coupler min. borehole - permanent micropile for service life up to years low exposure to corrosion compression tension compression tension with coupler medium exposure to corrosion without coupler with coupler without coupler with coupler

17 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs permanent micropile with DCP - double corrosion protection Annex 4 tension load compression load alternating load 4 4 tr 3 4 / 4a tr 4 / 4a tr or steel bar with thread ribs 8 heat shrink sleeve 2 hex nut 9 corrugated sheathing 2a hex nut - cast iron inside spacer 3 pile head plate spring basket spacer 4 lock nut, short 3 cement grout cover 4a lock nut, short - cast iron 4 additional reinforcement 5 lock nut, long 5 injection- and endcap 6 coupler 6 adhesive tape 7 contact coupler t R 5 mm [ 2-32 ] t R 2 mm [ 4-63,5 ] steel bar ,5 min. borehole - micropile for permanent use without coupler with coupler

18 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs pile head design with additional bond length Annex 5 semipermanent- and permanent micropile with standard corrosion protection tension load compression load alternating load / 4a 4 / 4a tr V V V 7 tr 7 tr 7 permanent micropile with - DCP (tubing acc. to ÖNORM EN 537) V - additional bond length tension load compression load alternating load / 4a 4 / 4a 2 2 V V V 5 tr 9 tr tr steel bar with thread ribs 2 anchor piece 2 hexnut 3 cement grout cover 2a hexnut - cast iron 4 additional reinforcement 4 lock nut, short 5 injection- and endcap 4a lock nut, short - cast iron 6 adhesive tape 9 corrugated sheathing 7 pile neck sheathing inside spacer t R 5 mm [ 2-32 ] t R 2 mm [ 4-63,5 ] note: - for temporary micropiles no pile neck sheathing is neccesary acc. to 7 - embedment length t R is valid for pile neck sheathing as well as micropiles with DCP V - additional bond length steel bar ,5 additional bond lenght * v ds * min. concrete strenght 25N/mm²

19 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs center- and edge distances, additional reinforcement, torque Annex 6 center - and edge distances, additional reinforcement concrete compressive strength at time of aplied load 25 N/mm² (cube 5 mm) min. concrete quality C 2/25 acc. to ÖNORM En 2- mechanical anchorage with additional reinforcement, (reinforcing steel, R e 5N/mm²) load bearing center - distance ) A edge - distance ) R additional reinforcement 2) (BSt 55) quantity n a c A,5 + nom c , ) distances is vaild for anchor piece and for anchorage 2 ) without additional reinforcement the value for center - and edge distance is to double c...concrete cover of constructive reinforcement according to valid standards, regulations at the place of application and exposure classes according to ÖNORM EN 26- where required torque coupling and anchorages type load bearing torque [knm] coupling / anchorage 2,4 25,7 26,8 28, 3,2 32,6 36 2,7 4 3,7 5 8, anchorage 63,5 8, coupling 63,5 2,

20 R ANP - ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs nominal dimensions and mass, rib geometry Annex 7 steel bar with thread ribs geometry A c b s a a d h d v detail A cross section nominal dimensions and mass, rib geometry nominal diameter d s Mass per meter ) G [kg/m] nominal cross section A [mm²] core diameter d h d v height min. a threaded ribs (left handed) width b s pitch c angle [grad] 2 2, ,5 9,, 4,8, 8,5 2, 25 3, ,4 23,9,3 5,8 2,5 8,5 2, 26 4, ,4 24,9,4 6, 3, 8,5 2, 28 4, ,3 26,8,5 6,7 4, 8,5 2,5 3 5, ,3 28,8,7 7, 5, 8,5 2,5 32 6,3 84 3,2 3,9,8 7,6 6, 8,5 2,5 36 7, ,2 34,7,9 8,5 8, 8,5 2,5 4 9, , 38,5 2, 9,5 2, 8,5 2,5 5 5, ,9 48,3 2,3 2, 26, 8, 2,5 63,5 24, ,4 6,6 2,7,8 2, 84, 4, radius R ) tolerance to nominal mass ± 4,5%

21 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs mechanical - technological characteristics acc. ÖNORM B 477 Annex 8 steel bar with thread ribs properties and requirements nominal diameter characteristic yield force characteristic ultimate force 5) design resistance value of micropile d s F e F m [kn] [kn] * * * , R = F e /,5 4) [kn] characteristic yield strength ratio 3) elongation at ultimate load 3) maximum stress max fatigue range for 2 6 cycles ) 2) 3) 4) 5) 5% - fractile value acc. to yield strength ratio ), 2) R e corresponds to R p,2 yield strength % - fractile value partial factor for steel acc. to ÖNORM EN * dimension only available on request R e N/mm² R m /R e - A gt % steel bars 2 bis 36 mm steel bars > 36 mm N/mm² N/mm² 55,8 5, 3 2

22 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs loss of load capacity under exposure of corrosion Annex 9 steel bar with thread ribs table loss of load capacity under exposure of corrosion micropile value corrosion rate in mm,,2,4,5, * 28 3* 32 36* ,5 F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn F p,2 kn R kn Fp,2 yield strength under exposure for corrosion R design resistance value of micropile * dimension only available on request

23 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs components: hexnut, lock nut short Annex 2 hexnut material: 25-5 : S355J2 63,5 : 2MnV6+U acc. to ÖNORM EN 25 SW ,5 SW load bearing SW , a hexnut - cast iron material: 4-63,5: EN-GJS-5-7 acc. to ÖNORM EN 563, G34CrMo4 acc. to ÖNORM EN 293 load bearing SW SW , lock nut, short material: S355J2 acc. to ÖNORM EN 25 SW 2-5 SW 63,5 load bearing SW ,

24 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs components: lock nut short, lock nut long, anchor piece Annex 4a lock nut, short - cast iron material: 4-63,5: EN-GJS-5-7 acc. to ÖNORM EN 563 GE 3, G34CrMo4 acc. to ÖNORM EN 293 SW load bearing SW , lock nut, long material: S355J2 acc. to ÖNORM EN 25 SW ,5 SW 2 anchor piece material: EN-GJS-5-7 acc. to ÖNORM EN 563 SW load bearing SW , load bearing SW ,5 5 25

25 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs components: pile head plate, coupler, contact coupler Annex 2 3 pile head plate material: S235JR acc. to ÖNORM EN 25 load bearing a c a a c 63, coupler material: S355J2 acc. to ÖNORM EN 25-2 load bearing , contact coupler material: S355J2 acc. to ÖNORM EN 25-2 load bearing ,5 2 9

26 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs components: heat shrink sleeve, corrugated sheating Annex 3 8 heat shrink sleeve i t load bearing i bevor shrinking / after shrinking t bevor shrinking / after shrinking / / 29 min.,5 / min., as required * 63,5 5 / 34 * overlapping heat shrink sleeve / corrugated sheating min. 7,5 cm bevor shrinking 9 corrugated sheathing material: PVC-U acc. to DIN 86/862 material: PE acc. to DIN 874/875 load bearing dimensions min. d a / min. d i min. t da di / 43, 56 / / 56,, 5 8 / 7, 63,5 / 9,5 as required

27 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs components: PE-cord, mat spacer, spring basket spacer Annex 4 inside spacer material: PE-HD acc. to ÖNORM EN ISO 872-;2 PE - cord mat spacer d A s d 2 h load bearing 2-5 PE - cord min. 6 63,5 9 load bearing dimensions h 2 quantity of ribs n , spring basket spacer material: PVC-U acc. to DIN 86/862 load bearing standard corrosion protection double corrosion protection d s min. A d s min. A 2 25, , , , 63 3, , , , , ,5 75 3,6 2 3,2 4

28 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs components: injection- and endcap, pile neck sheating Annex 5 5 injection- and endcap alternative design 7 pile neck sheathing (plastic corrugated sheathing) material: PVC-U acc. to DIN 86/862 material: PE acc. to DIN 874/875 load bearing dimensions min. d a / min. d i min. t / da di / / / 7 63,5 / 9,5

29 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs corrosion protection Annex 6 Corrosion protection by hot dip galvanising The galvanising is done in galvanising plants according to ÖNORM EN ISO 46. The average thickness of the zinc coating layer has to be at least 5 m. Particular attention shall be paid to the threadability of accessories. Permanent corrosion protection - DCP The steel bar is cut to length and is provided with spacers by means of a PE - cord or mat spacers and a corrugated sheathing on its entire length, excluding the thread part for the pile head. At the pile foot an injection cap is arranged and at the pile head a vent flap is fixed. A tape is used to seal it against the corrugated sheathing. If parts with sleeve joints are used, either vent flaps are mounted at both ends of each piece, or a full length of bar is grouted and cut to pieces after hardening of the grout. The annulus between steel bar and corrugated sheathing is grouted with cement on an inclined platform. The grouted micropile must not be removed from the injection platform and loaded before 24h have passed, provided that suitable temperature conditions for injection and hardening are given. To ensure the centric position of micropile in the borehole, spring basket spacers are mounted on the building site and, if required, post-grouting systems.

30 ANP - Micropile SAS 55 steel bar ARI-G and steel bar S 555/7 63,5 with thread ribs transport, storage and installation Annex 7 Transport and storage Significant for the effectiveness of the permanent corrosion protection is that the corrugated sheating is not damaged by incorrect handling during transport, storage and mounting. The micropiles have to be stored off-floor. The support points must be positioned at an appropriate distance to avoid deflection and must not be sharp-edged. The stacking of micropiles is only permissible either parallel, side-by-side or on top of each other. The weight of micropiles must not result in the damage of the lower layers of stacked micropiles. Installation The production of the borehole depends on the soil conditions and takes place uncased, cased or partly cased. The borehole has to be cleaned properly for the installation of a micropile. An appropriate borehole diameter has to be chosen so that the micropile and the spring basket spacer can be inserted without damaging the corrugated sheathing, e.g. by sharp edges of the casing pipe. If necessary the diameter of the drilling hole has to be adjusted to the coupler s diameter. Whenever a pile is transported to the borehole or when a pile is inserted, deflections should be avoided. If a crane is used to transport the pile, a traverse with multiple suspension points should be used. When the pile is installed in parts, a coupling has to be fitted during installation. If the micropile is used with alternating loads couplers must be locked with nuts. For compressive loads a contact coupler can be used. In this case a heat shrink sleeve must be used to assure the coupler is secured against unscrewing. With permanent micropiles the coupling s corrosion protection is carried out by means of a heat shrink sleeve. Thereby a sufficient overlapping to the permanent protection s corrugated sheathing is necessary. The micropile is installed centrically into the cleaned borehole and is then grouted with cement grout or the borehole has already been filled with cement grout and grouted afterwards. With permanent micropiles the corrugated sheathing of the permanent corrosion protection must be embeded into the foundation body.