Concrete screws

EJOT® Concrete screws ETA-approved concrete screws for cracked and non-cracked concrete

Anchors and Installation Technology Concrete Screws

ETA-approved concrete screws for cracked and non-cracked concrete.

Self-tapping, approved for push-through installations.

No protruding threads, neat head finish.

Screw anchor with ETA approval.

Fastening which is free of expansion forces.

The anchor will bear loads immediately.

Quick and easy installation.

The screw anchors are set without a plug.

Optimized tip design cuts a clear thread in the base material. The thread starts immediately without breakout of the concrete surface.

Concrete screw JC2 The JC2 concrete screw is very easy and quick to install. Requires neither additional tools nor operations. It is able to take high loads even with small spacings and edge distances. It is removable and therefore fits well for temporary fixings.

Description ll Self-tapping, approved screw anchors for push-through installations. ll No expansion forces allow for small edge distances and spacings. ll ZP for dry indoor ll Combines the benefits of undercut and chemical anchors, requiring neither additional tools and operations nor hardening time. ll JC2-KB: Hexagon head with combined washer ll JC2-ST: Countersunk head ll JC2-IT: With combined internal thread M8/M10 ll The concrete screw is installed directly through the fixture into the bore hole only by screwing. By doing so, the thread is cutting itself into the concrete and that way creating a mechanical interlock over the total anchorage depth.

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Benefits ll Economic installation ll Quick and easy installation ll No expansion forces ll Small spacings and edge distances possible ll Removable

Anchors and Installation Technology Concrete Screws

JC2-KB Steel concrete screw with ll hexagonal head and T-drive (6, 8 mm) ll hexagonal head (10 mm)

JC2-ST Steel concrete screw with countersunk head and T-drive

JC2-IT Steel concrete screw with combined internal thread M8 / M10

Base materials Approved for

Also suitable for

ll Cracked concrete ll Non-cracked concrete ll Hollow concrete slab

ll ll ll ll

Solid clay brick Solid sand-lime brick Perforated clay brick Natural stone

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Anchors and Installation Technology Concrete Screws

Approvals / Cerfications / Applications Description of document

Authority/ Laboratory

ID

Additional info

European Technical Assessment

ZAG -National Building and Civil Engineering Institute, Slovenia

ETA-17/0835

EAD 330232-00-0601, Option 1

European Technical Assessment

ZAG -National Building and Civil Engineering Institute, Slovenia

ETA-18/0221

ETAG 001 – part 1 and 6, edition 2013

Fire resistance

ZAG -National Building and Civil Engineering Institute, Slovenia

ETA-17/0835

EOTA TR 020 EAD 330232-000601, Option 1 / CEN/TS 1992-4

EJOT Anchor Fix calculation software

EJOT software

Additional information concerning all given data in the product data sheet 1. Load figures apply for a rebar spacing s ≥ 15 cm or alternatively for a rebar spacing s ≥ 10 cm in combination with a rebar diameter of ds ≤ 10 mm. If spacings or edge distances become smaller than the characteristic figures (scr,N / ccr,N) a calculation as per ETAG, Annex C, design method A needs to be carried out. For more details, see ETA-approval ETA-17/0835.

2. Concrete is considered non-cracked when the value of tension within the concrete is σL + σR ≤ 0. In the absence of detailed verification σR = 3 N/mm² can be assumed (σL equals the tension within the concrete as a result of external loads, forces on anchor included; σR equals the tension coming from shrinkage or creep of the concrete, as well as displacements of supports or temperature variations).

3. Shear load figures apply for an anchor without influence of a concrete edge. For shear loads close to an edge (c ≤ 10 x hef), concrete edge failure has to be checked as per ETAG, Annex C, Design Method A.

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Free download: www.ejot.com/construction/ anchorfix

Anchors and Installation Technology Concrete Screws

Static and quasi-static loads The data of these tables is based on: ll Concrete C20/25, fck,cube = 25 N/mm². ll Installation has been done correctly (see page 10). ll No influence of edge distances and spacings (see page 11). ll Respect of minimum base material thickness (see page 11). ll JC2 6 hnom = 40 mm for multiple use according to PART 6

Characteristic resistances Anchor size

Approval Effective anchorage depth hef Nominal anchorage depth hnom Non-cracked concrete Tensile NRk Shear VRk Cracked concrete Tensile NRk Shear VRk * Failure mode = steel

JC2 6

JC2 8

JC2 10

[mm] [mm]

PART6 31.9 40

OPT1 42.5 55

40.0 55

OPT1 48.5 65

48.8 70

OPT1 61.5 85

[kN] [kN]

3.0 9.1

6.0 9.8*

6.2 12.8

8.0 14.2*

14.2 17.2

19.0 29.1*

[kN] [kN]

3.0 6.5

3.0 10.0

3.1 9.1

4.0 12.2

5.2 12.3

7.0 34.7

Design resistances Anchor size Approval Effective anchorage depth hef Nominal anchorage depth hnom Non-cracked concrete Tensile NRd Shear VRd Cracked concrete Tensile NRd Shear VRd * Failure mode = steel

JC2 6

JC2 8

JC2 10

[mm] [mm]

PART6 31.9 40

OPT1 42.5 55

40.0 55

OPT1 48.5 65

48.8 70

OPT1 61.5 85

[kN] [kN]

2.0 6.1

3.3

3.5 8.5

4.4

7.9

10.6

7.8*

11.4*

11.5

23.2*

[kN] [kN]

2.0 4.3

1.7 6.6

1.7 6.1

2.2 8.1

2.9 8.2

3.9 23.2

Recommended loads Anchor size Approval Effective anchorage depth hef Nominal anchorage depth hnom Non-cracked concrete Tensile NRec Shear VRec Cracked concrete Tensile NRec Shear VRec * Failure mode = steel

JC2 6

JC2 8

JC2 10

[mm] [mm]

PART6 31.9 40

OPT1 42.5 55

40.0 55

OPT1 48.5 65

48.8 70

OPT1 61.5 85

[kN] [kN]

1.4 4.3

2.4 5.6*

2.5 6.1

3.2 8.1*

5.6 8.2

7.5 16.6*

[kN] [kN]

1.4 3.1

1.2 4.7

1.2 4.3

1.6 5.8

2.1 5.8

2.8 16.5

The partial safety factor for action is Îł = 1.4.

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Anchors and Installation Technology Concrete Screws

Basic loading data for precast pre-stressed hollow core slabs The data of these tables is based on: ll Concrete C30/37 to C50/60 ll Installation has been done correctly (see page 7). ll Edge distances and spacings acc. page 7.

Characteristic resistances Anchor size Flange thickness Loading for all directions Char. bending resistance Edge distance Spacing

JC2 6 db FRk M0Rk,s ccr = cmin scr = smin

[mm] [kN] [Nm] [mm] [mm]

≥ 25 1.0

≥ 30 2.0 16.0 100 100

≥ 40 3.0

Design resistances Anchor size Flange thickness Loading for all directions Design bending resistance Edge distance Spacing

JC2 6 db FRd MRd,s ccr = cmin scr = smin

[mm] [kN] [Nm] [mm] [mm]

≥ 25 0.7

≥ 30 1.3 12.8 100 100

≥ 40 2.0

Recommended loads Anchor size Flange thickness db Loading for all directions FRec Rec. bending load MRec Edge distance ccr = cmin Spacing scr = smin The partial safety factor for action is γ = 1.4.

JC2 6 [mm] [kN] [Nm] [mm] [mm]

≥ 25 0.5

≥ 30 1.0 9.1 100 100

≥ 40 1.4

Requirements for multiple anchoring

The definition of multiple use according to the Member States is given in annex of the ETAG 001 Part 6.

Minimum number of fixing points 3 4

Minimum number of anchors per fixing point

Maximum design load of action NSd

1 1

2 kN 3 kN

The value NSd migth be increased if in the design it is shown that the requirements on the strength and stiffness of the fixture in the serviceability and ultimate states after the failure of one anchor are fulfilled.

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Anchors and Installation Technology Concrete Screws

Installation instructions in pre-stressed hollow core slabs 1

2

d0

3

≥ 25 mm

≥ 50 mm

≥ 50 mm ≥ 100 mm

1. Locate rebars by means of suitable detector

2. Mark rebar location

4

3. Make a cylindrical hole

5

6 tfix

4. Clean the hole

= 0 mm

5. Install the screw anchor by impact screwdriver or torque wrench

6. Ensure that the screw anchor head fully rests without any gap on the fixture and is not damaged

lp

ap

ap

a2

a2

ap

admissible anchor position

a2

a2

c2

Minimum spacing and edge distance of anchors and distance between anchor groups in pre-stressed hollow core slabs

Admissible anchor position in pre-stressed hollow core slabs Core distance Pre-stressing steel distance Distance between anchor position and prestressing steel

s1

ap

a1

s1

c1

lc

lc ≥ 100 mm lp ≥ 100 mm ap ≥ 50 mm

Minimum edge distance

cmin ≥ 100 mm

Minimum anchor spacing Minimum distance between anchor groups

smin ≥ 100 mm amin ≥ 100 mm

c1, c2 = edge distance s1, s2 = anchor spacing a1, a2 = distance between anchor groups

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Anchors and Installation Technology Concrete Screws

Fire resistance Design under fire exposure is performed according to the design method given in EOTA TR 020.

The data of these tables is based on ETA-17/0835.

ll ll ll ll ll

Concrete C20/25, fck,cube = 25 N/mm² alues cannot be used with hollow core slabs V Installation has been done correctly (see page 10) No influence on edge distances and spacings (see page 11) Respect of minimum base material thickness (see page 11)

Characteristic resistances JC2 6

Anchor size

Approval Effective anchorage depth hef

[mm]

Nominal anchorage depth hnom

[mm]

Fire Exposure R30 Tensile NRk, S, fi Shear (steel failure) VRk, S, fi Fire Exposure R120 Tensile NRk, S, fi Shear (steel failure) VRk, S, fi

[kN] [kN] [kN] [kN]

JC2 8

JC2 10

PART 6

OPT 1

OPT 1

OPT 1

31.9 40

42.5 55

48.5 65

61.5 85

0.24 0.24

0.24 0.24

0.42 0.42

1.02 1.02

0.12 0.12

0.12 0.12

0.21 0.21

0.54 0.54

JC2 8

JC2 10

Design resistances JC2 6

Anchor size

Approval Effective anchorage depth hef

[mm]

Nominal anchorage depth hnom

[mm]

Fire Exposure R30 Tensile NRd Shear VRd Fire Exposure R120 Tensile NRd Shear VRd

[kN] [kN] [kN] [kN]

PART 6 31.9 40

OPT 1 42.5 55

OPT 1 48.5 65

OPT 1 61.5 85

0.24 0.24

0.24 0.24

0.42 0.42

1.02 1.02

0.12 0.12

0.12 0.12

0.21 0.21

0.54 0.54

JC2 8

JC2 10

Recommended loads JC2 6

Anchor size

Approval Effective anchorage depth hef

[mm]

Nominal anchorage depth hnom

[mm]

Fire Exposure R30 Tensile NRec Shear VRec Fire Exposure R120 Tensile NRec Shear VRec

[kN] [kN] [kN] [kN]

PART 6 31.9 40

OPT 1 42.5 55

OPT 1 48.5 65

OPT 1 61.5 85

0.24 0.24

0.24 0.24

0.42 0.42

1.02 1.02

0.12 0.12

0.12 0.12

0.21 0.21

0.54 0.54

The recommended loads under fire exposure include a safety factor for resistance under fire exposure γM,fi = 1.0 and the partial safety factor for action γF,fi = 1.0.

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Anchors and Installation Technology Concrete Screws

Materials and dimensions Material quality and coating Part Material Coating

Cold forged carbon steel Zinc electroplated according to EN ISO 4042 ≼ 5 ¾m

Mechanical properties Specification

[N/mm2] [Nm] [Nm] [Nm]

Nominal tensile strength Fuk

Char. bending resistance M0Rk,s Design bending resistance MRd,s Recommended bending resistance MRec Specification

Nominal diameter Thread outer diameter Core diameter Shaft diameter Stressed section

dnom dth dk ds As

[mm] [mm] [mm] [mm] [mm]

JC2 6

JC2 8

JC2 10

800 16 12.8 9.1

800 37 29.6 21.1

800 76 60.8 43.4

JC2 6

JC2 8

JC2 10

6.0

8.0

7.45 5.5 5.88 23.76

9.9 7.3 7.8 41.85

10.0 11.9 9.3 9.6 67.9

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Anchors and Installation Technology Concrete Screws

Installation instructions Installation equipment

Notes: JC2 8

JC2 10

Specification

JC2 6

Rotary hammer Drill bit Socket (SW) Additional tools

750…1200 r.p.m / 1.8 …3.3 J SDS+ 2-CUT or 4-CUT sizes 5, 6, 8, 10 mm 11 mm 13 mm 15 mm air pump/compressor, torque wrench, impact screw driver

Condrete and hollow core slab ll Concrete strenght is C20/25 to C50/60 Hollow core slabs C30/37 to C50/60 ll No significant voids in concrete. ll Concrete is well compacted. ll Thickness of concrete is according PDS installation data (see page 11).

Installation (see page 10-11) ll Edge distances and spacing are according PDS installation data. ll Use proper air pump or compressor. ll Drill hole is deep enough (mentioned h1 in PDS installation data). ll All dust should be cleaned from the hole to avoid screw jamming during installation. ll Pay special attention to cleaning, especially when installing downwards. ll In case of aborted hole, drilling of new hole at a minimum distance of twice the depth of the aborted hole, or smaller distance provided the aborted drill hole is filled with high strength non-shrinkage mortar. No shear or oblique tension loads are allowed in the direction of a not filled aborted hole.

Other base materials ll Concrete screw can be used also in other base materials such as clay brick, natural stone, perforated clay brick, solid sand-lime brick.

Installation data JC2 6

Specification

Approval Drill hole diameter Cutting diameter at the upper tolerance limit (max. diam. bit) Depth of drilled hole to deepest point Effective anchorage depth Nominal anchorage depth Diameter of clearance hole in the fixture Required torque Width across flats T-drive (in types KB and ST)

10

PART 6

JC2 8 OPT 1

-

JC2 10 OPT 1

-

OPT1

d0

[mm]

6

8

10

dcut,max ≤

[mm]

6.40

8.45

10.45

h1 ≥ hef hnom df ≥ Tinst SW

[mm] [mm] [mm] [mm] [Nm] [mm] T-

50 31.9 40

65 42.5 55

65 40.0 55

75 48.5 65

80 48.8 70

95 61.5 85

9 14 11

12 40 13

14 90 15

T30

T40

NA

Anchors and Installation Technology Concrete Screws

Through installation

JC2 anchor installation

hmin

tfix SW T-Drive

Tinst

d0 df

hef hnom h1

Minimum thickness of concrete member. spacing and edge distance Cracked and non-cracked concrete

Approval Effective anchorage depth Nominal anchorage depth Minimum thickness of base material Minimum spacing Minimum edge distance Critical spacing for splitting failure and concrete cone failure (in case characteristic loading affects) Critical edge distance for splitting failure and concrete cone failure (in case characteristic loading affects)

JC2 8

JC2 6

hef hnom hmin smin cmin scr.sp scr.N ccr.sp ccr.N

[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]

PART 6 31.9 40 100 35 35 96 96 48 48

OPT 1 42.5 55 100 35 35 128 128 64 64

40.0 55 110 50 50 120 120 60 60

OPT 1 48.5 65 110 50 50 146 146 73 73

JC2 10

48.8 70 125 50 50 146 146 73 73

OPT1 61.5 85 125 50 50 184 184 92 92

h

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Anchors and Installation Technology Concrete Screws

Delivery program

Size

JC2 6

JC2 8

JC2 10

• Option 1 • Part 6 ■ No ETA

12

JC2-KB

JC2-ST

JC2-IT

zinc-plated

zinc-plated

Type

Tfix [mm]

Length [mm]

zinc-plated

6x45/5

5

45

•

6x45 M8/M10 6x50/10 6x60/5/20 6x60 M8/M10 6x80/25/40 6x100/45/60 8x60/5 8x70/5(15) 8x80/15(25) 8x100/35(45) 8x120/55(65) 10x80/10 10X90/5(20) 10X100/15(30) 10X120/35(50) 10X140/55(70)

10 5/20 25/40 45/60 5 5(15) 15(25) 35(45) 55(65) 10 5(20) 15(30) 35(50) 55(70)

45 50 60 60 80 100 60 70 80 100 120 80 90 100 120 140

•

• ••

••

•• ••

•• ••

■

• • • •

■

• • • •

••

Anchors and Installation Technology Concrete Screws

EJOTÂŽ concrete screw JC2-KB Fire resistance

ETA-17/0835

L [mm]

ETA-18/0221

tfix [mm]

45 5 50 10 60 5/20 80 25/40 100 45/60 60 5 70 5 (15*) 80 15 (25*) 100 35 (45*) 120 55 (65*) 80 10 90 5 (20*) 100 15 (30*) 120 35 (50*) 140 55 (70*) *Not part of the ETA

hnom [mm]

h1 [mm]

40 40 55/40 55/40 55/40 55 65 (55*) 65 (55*) 65 (55*) 65 (55*) 75 85 (70*) 85 (70*) 85 (70*) 85 (70*)

50 50 65/50 65/50 65/50 65 75 (65) 75 (65) 75 (65) 75 (65) 95 (80*) 95 (80*) 95 (80*) 95 (80*) 95 (80*)

100 100 100 100 50 50 50 50 50 50 25 25 25 25 25

Application range ll Facade scaffolds ll Temporary fastening ll Contact surfaces ll Shelves ll Cable racks ll hand rails ll Battens

Article number

Concrete screw JC2-KB 6X45/5 Concrete screw JC2-KB 6X50/10 Concrete screw JC2-KB 6X60/5/20 Concrete screw JC2-KB 6X80/25/40 Conrete screw JC2-KB 6X100/45/60 Conrete screw JC2-KB 8X60/5* Conrete screw JC2-KB 8X70/5(15) Concrete screw JC2-KB 8X80/15(25) Concrete screw JC2-KB 8X100/35(45) Concrete screw JC2-KB 8X120/55(65) Concrete screw JC2-KB 10X80/10* Concrete screw JC2-KB 10X90/5(20) Concrete screw JC2-KB 10X100/15(30) Concrete screw JC2-KB 10X120/35(50) Concrete screw JC2-KB 10X140/55(70)

9 650 071 305 9 650 071 307 9 650 071 309 9 650 071 313 9 650 071 317 9 650 071 331 9 650 071 333 9 650 071 335 9 650 071 339 9 650 071 343 9 650 071 359 9 650 071 361 9 650 071 363 9 650 071 367 9 650 071 369

Properties ll Galvanized zinc-plated steel ll Hexagon head with flange ll ETA-approved concrete screw for cracked and non-cracked concrete ll Self-tapping approved screw anchor for push-through installation ll No expansion forces, hence small edge and centre distances possible ll Completely removable ll For dry indoor areas

Embedment substrates Approved for ll Cracked concrete ll Pre-stressed hollow core slab ll Non-cracked concrete Also suitable for ll Bricks ll Solid brick sandstone Characteristic values Type

Order description

Characteristic values Drive d0 Tinst df

JC2 6

JC2 8

JC2 10

Tensile strength NRk, S, fi

0.24 kN

0.42 kN

1.02 kN

Shear force-carrying capacity (steel failure) VRk, S, fi

0.24 kN

0.42 kN

1.02 kN

Tensile strength NRk, S, fi

0.12 kN

0.21 kN

0.54 kN

Shear force-carrying capacity (steel failure) VRk, S, fi

0.12 kN

0.21 kN

0.54 kN

Fire resistance R30

JC2 6

JC2 8

JC2 10

A/F11/T30

A/F13/T40

A/F 15

6 mm 14 Nm 9 mm

8 mm 40 Nm 12 mm

10 mm 90 Nm 14 mm

Cross references Cleaning brush Blow-out pump Tool belt Hammer drill SDS plus

Fire resistance R120

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Anchors and Installation Technology Concrete Screws

EJOTÂŽ concrete screw JC2-ST Fire resistance

ETA-17/0835

T30

ETA-18/0221

L [mm]

tfix [mm]

hnom [mm]

h1 [mm]

60 100

5 5

40 40

65/50 65/50

Cross references Cleaning brush Blow-out pump Tool belt Hammer drill SDS plus

100 50

Order description

Article number

Concrete screw JC2-ST 6X60/5/20 Concrete screw JC2-ST 6X100/45/60

9 650 071 609 9 650 071 617

Application range ll Facade scaffolds ll Temporary fastening ll Contact surfaces ll Shelves ll Cable racks

Properties ll Galvanized zinc-plated steel ll Countersunk head, Torx drive ll ETA-approved concrete screw for cracked and non-cracked concrete ll Self-tapping approved screw anchor for

ll hand rails ll Battens

push-through installation ll N o expansion forces, hence small edge and centre distances possible ll Completely removable ll For dry indoor areas

Embedment substrates Approved for ll Cracked concrete ll Non-cracked concrete Also suitable for ll Pre-stressed hollow core slab ll Bricks ll Solid brick sandstone Characteristic values Type

Characteristic values dk d0 Tinst df

JC2 6

JC2 8

JC2 10

Tensile strength NRk, S, fi

0.24 kN

0.42 kN

1.02 kN

Shear force-carrying capacity (steel failure) VRk, S, fi

0.24 kN

0.42 kN

1.02 kN

Tensile strength NRk, S, fi

0.12 kN

0.21 kN

0.54 kN

Shear force-carrying capacity (steel failure) VRk, S, fi

0.12 kN

0.21 kN

0.54 kN

Fire resistance R30

Fire resistance R120

14

14 mm 6 mm 14 Nm 9 mm

Anchors and Installation Technology Concrete Screws

EJOTÂŽ concrete screw JC2-IT Fire resistance

ETA-17/0835

A/F 17

ETA-18/0221

L [mm]

tfix [mm]

hnom [mm]

h1 [mm]

45 60

5 5

40 40

65/50 65/50

50 50

Application range ll Pipe brackets ll Profile rails

JC2 6

JC2 8

Article number

Concrete screw JC2-IT 6X45 M8/M10 Concrete screw JC2-IT 6X60 M8/M10

9 650 071 504 9 650 071 509

Properties ll Galvanized zinc-plated steel ll Hexagon head with internal thread M8 / M10 ll ETA-approved concrete screw for cracked and non-cracked concrete ll Self-tapping approved screw anchor for push-through installation ll No expansion forces, hence small edge and centre distances possible ll Completely removable ll For dry indoor areas

Embedment substrates Approved for ll Cracked concrete ll Non-cracked concrete Also suitable for ll Pre-stressed hollow core slab ll Bricks ll Solid brick sandstone Characteristic values Type

Order description

JC2 10

Fire resistance R30 Tensile strength NRk, S, fi

0.24 kN

0.42 kN

1.02 kN

Shear force-carrying capacity (steel failure) VRk, S, fi

0.24 kN

0.42 kN

1.02 kN

0.12 kN

0.21 kN

0.54 kN

0.12 kN

0.21 kN

0.54 kN

Characteristic values dk d0 Tinst df

14 mm 6 mm 14 Nm 9 mm

Cross references Cleaning brush Blow-out pump Tool belt Hammer drill SDS plus

Fire resistance R120 Tensile strength NRk, S, fi

Shear force-carrying capacity (steel failure) VRk, S, fi

15

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