Hollow-ceiling anchor W-HD

Name: Hollow-ceiling anchor W-HD
Brand: Würth
SKU: 0905120801

Hollow-ceiling anchor W-HD
ANC-(W-HD)-(A2K)-M8X35/45

Art.-no. 0905120801

EAN 4046778646466

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Prices for customers after login

Hollow-ceiling anchor W-HD

Art.-no. 0905120801

Prices for customers after login

Quantity

x 50 pcs

Exclusively for trade customers

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Specification

Female thread anchor with metric thread for secure anchoring in hollow-core prestressed concrete ceilings. With technical approval. Steel, zinc-plated

Screws or threaded rods can be used

The anchor can also be mounted outside the cavity axis, up to 50 mm from the prestressed strand – maximum flexibility

Quick, easy installation – no special tool required

Immediate load-bearing capacity – no waiting

Proof of Performance

DIBt National technical approval Z-21.1-1832

Fire resistance (base material: concrete C45/55 or C50/60): R30, R60, R90, R120: DIBt National technical approval Z-21.1-1832, fire protection test report no. (3526/3426)

Notice

The cone is separated from the expansion sleeve when the screw or hexagon nut is tightened. - Important: At least three screw/nut rotations are required. Applying the installation torque pulls the cone into the expansion sleeve and expands it

Anchoring is only permissible in hollow-core prestressed concrete ceilings with a hollow space width that does not exceed 4.2 times the web width (b_H<= 4.2 x b_St)

Application area

Key:

tfi x = thickness of the attachment

du = mirror thickness

bH = cavity width

bSt = web width

sSp = axis distance to pre-stressed strand

c = edge distance

Tinst = installation torque

Key:

tfi x = thickness of the attachment

du = mirror thickness

bH = cavity width

bSt = web width

sSp = axis distance to pre-stressed strand

c = edge distance

Tinst = installation torque

Create the drill hole

Set anchor in place

Mount component

At least three rotations of the screw - Cone separates from sleeve

Apply installation torque

Installation status

DIBt National technical approval Z-21.1-1832

Fire resistance (base material: concrete C45/55 or C50/60): R30, R60, R90, R120: DIBt National technical approval Z-21.1-1832, fire protection test report no. (3526/3426)

Application

Application area

Special fastener for anchoring in hollow-core prestressed concrete ceilings

Suitable for cavities and solid zones of hollow-core prestressed concrete ceilings

Fixing points and anchors in a redundant non-structural system with approval

Hollow-core prestressed concrete ceilings with concrete compressive strength class of C45/55 or B55

E.g. anchoring of lightweight ceiling coverings and suspended ceilings as well as for statically comparable anchoring up to 1.0 kN/sqm and the mounting of metal structures, brackets, cable conduits, pipes, ventilation lines, suspended ceilings etc.

W-HD can be used in dry indoor areas, e.g. homes, offices, schools, hospitals, retail outlets

Technical information

Anchor diameter	8 mm
Sleeve length	35 mm
Required screw length (l s)	47 mm + thickness of the add-on part (t fix)
Required stud-bolt length (l B)	53 + thickness of the add-on part (t fix)
Nominal drill-bit diameter (d 0)	12 mm
Drill hole depth (h 0)	55 mm
Through-hole in the component to be connected (d f)	9 mm
Installation torque (T inst)	20 Nm

Performance data
(Fire resistance R30, R60, R90, R120 see fire protection test report no. 3526/3426) and gen. construction permit perm. no.: Z-21.1-1832
Anchor diameter [mm]			M6				M8				M10				M12
Mirror thickness		d_u ≥ [mm]	25	30	40	50	25	30	40	50	25	30	40	50	25	30	40	50
Spacing between individual anchors or anchor pairs		s_cr ≥ [mm]	300
Individual anchors
Admissible load Tensile, shear load and diagonal tensile force at every angle	Admissible load¹⁾²⁾ Prestressed concrete hollow-core panels edge distance c_cr ≥ 150 mm Spacing s_cr ≥ 300 mm	F_adm [kN] ≥ C45/55¹⁾²⁾	0,7	0,9	2,0	2,9	0,7	0,9	2,0	3,6	0,9	1,2	3,0	3,6	1,0	1,2	3,0	4,3
		c_cr ≥ [mm]	150
	Admissible load¹⁾²⁾ Prestressed concrete hollow-core panels min. edge distance c_min ≥ 100 mm Spacing s_cr ≥ 300 mm	F_adm [kN] ≥ C45/55¹⁾²⁾	0,35	0,8	1,8	2,4	0,35	0,8	1,8	3,0	0,8	1,0	2,7	3,0	0,8	1,0	2,7	3,6
		c_min ≥ [mm]	100
Anchor pair³⁾
Admissible load Tensile, shear load and diagonal tensile force at every angle	Admissible load¹⁾²⁾ Prestressed concrete hollow-core panels edge distance c_cr ≥ 150 mm Min. spacing s_min	F_adm/anchor pair [kN] ≥ C45/55¹⁾²⁾	0,7	1,4	2,6	3,9	0,7	1,4	2,6	4,8	1,1	2,0	4,8	4,8	1,2	2,0	4,8	5,7
		s_min ≥ [mm]	70	80	100	100	70	80	100	100	70	80	100	100	70	80	100	100
		c_cr ≥ [mm]	150
	Admissible load¹⁾²⁾ Prestressed concrete hollow-core panels edge distance c_min ≥ 100 mm Min. spacing s_min	F_adm/anchor pair [kN] ≥ C45/55¹⁾²⁾	0,35	1,25	2,35	3,2	0,35	1,25	2,35	4	0,9	1,8	4,3	4,3	1	1,8	4,3	4,8
		s_min ≥ [mm]	70	80	100	100	70	80	100	100	70	80	100	100	70	80	100	100
		c_min ≥ [mm]	100
Admissible bending moment strength class 5.8		M_adm [Nm]	-				10,7				21,4				37,4
Admissible bending moment strength class 8.8		M_adm [Nm]	4,4				17,1				34,2				59,8
¹⁾ When introducing external loads into the hollow prestressed concrete panel ceiling via anchors, the shear carrying capacity must be reduced. When fastening light ceiling coverings and joist constructions in accordance with DIN 18168-1:1981-10, this reduction is not necessary. ²⁾ For edge distances c_min ≤ c ≤ c_cr, the admissible loads may be determined via linear interpolation. ³⁾ The admissible loads apply to the anchor pair. The admissible load for the anchor with the greatest load may not exceed the values specified for the individual anchors. For anchors in an anchor pair with spacings of s_min ≤ s ≤ s_cr, the admissible load may be linearly interpolated, whereby twice the admissible load for individual anchors may be applied to the anchor pair with centric load transfer for the ultimate limit when s = s_cr.

Characteristic values
Nominal drill diameter⁴⁾	d₀ [mm]	10	12	16	18
Diameter of cutting edges⁴⁾	d_cut ≤ [mm]	10,45	12,5	16,5	18,5
Drill hole depth	h₀ [mm]	50	55	60	70
Through hole in the component being connected	d_f ≤ [mm]	7	9	12	14
Installation torque	T_inst = [Nm]	10	20	30	40