Concealed joist hanger BT

The beam hanger are used as concealed connections of secondary beams on main beams or on posts.

CE Marking

ETA

Service class 2

Fire resistance R 60

Available in Connector Selector

Product Details

Steel quality:
S 250 GD + Z 275 according to DIN EN 10346

Corrosion protection:
275 g / m galvanized on both sides 20mm

Supporting member:
Solid wood, engineered wood

Supported member:
Solid wood, engineered wood

• for connecting secondary beams of wood or wooden materials to the main support structure of wood / wood materials.

References	Joist Size [mm]		Product Dimensions [mm]					Header holes	Joist holes	Box Quantity
	Width	Height	A	B	C	t₁	t₂	Ø5	Ø13
	Min	Min β=0	A	B	C	t₁	t₂	Ø5	Ø13
BT280-B	60	312	280	106	62	3	6	52	7	10
BT320-B	60	352	320	106	62	3	6	60	8	10
BT360-B	60	392	360	106	62	3	6	68	9	8
BT400-B	60	432	400	106	62	3	6	76	10	8
BT440-B	60	472	440	106	62	3	6	84	11	6
BT480-B	60	512	480	106	62	3	6	92	12	6
BT520-B	60	552	520	106	62	3	6	100	13	6
BT560-B	60	592	560	106	62	3	6	108	14	5
BT600-B	60	632	600	106	62	3	6	116	15	5

Combined load:

References	Product Capacities
	Number of Fasteners				Product characteristic capacities - Timber C24 [kN]
	Header		Joist		R_1,k						R_2,k
	Qty	Type	Qty	Type	Dowels length [mm]						Dowels length [mm]
	Qty	Type	Qty	Type	60	80	100	120	140	160	60	80	100	120	140	160
BT280-B	52	CNA4.0x50	7	STD12	64.6	68	71.7	76.4	81.7	87.2	55.4	58.3	61.5	65.5	70	74.7
BT320-B	60	CNA4.0x50	8	STD12	77	81	85.5	91.2	97.5	104.1	67.4	70.9	74.8	79.8	85.3	91.1
BT360-B	68	CNA4.0x50	9	STD12	89.1	93.8	99	105.8	113.3	121.1	79.2	83.4	88	94	100.7	107.6
BT400-B	76	CNA4.0x50	10	STD12	100.8	106.1	112.3	120.2	129	137.9	90.7	95.5	101.1	108.2	116.1	124.1
BT440-B	84	CNA4.0x50	11	STD12	112.1	118	125.2	134.4	144.4	154.7	101.9	107.3	113.8	122.2	131.3	140.6
BT480-B	92	CNA4.0x50	12	STD12	122.8	129.3	137.7	148.2	159.7	171.3	112.6	118.5	126.2	135.8	146.4	157
BT520-B	100	CNA4.0x50	12	STD12	122.8	129.3	138.4	150.5	163.1	175.8	122.8	129.3	138.4	150.5	163.1	175.8
BT560-B	108	CNA4.0x50	12	STD12	122.8	129.3	138.4	150.7	164.9	179.1	122.8	129.3	138.4	150.7	164.9	179.1
BT600-B	116	CNA4.0x50	12	STD12	122.8	129.3	138.4	150.7	164.9	180.4	122.8	129.3	138.4	150.7	164.9	180.4

The joist shall have as minimum a width = length of steel dowel.

For beams with a slope β the capacities shall be multiply with the factor.

β	0°	15°	30°	45°
factor	1.0	0.95	0.9	0.85

R_2,kcapacities are calculated as R_2,k = R_1,k x (nb of dowels - 1) / (nb of dowels).

The top dowel is not considered for the uplift capacities as it is placed in an open hole.

More detailed information are given in the ETA.

References	Product Capacities
	Number of Fasteners				Product characteristic capacities - Timber C24 [kN]
	Header		Joist		R_3,k						R_4,k
	Qty	Type	Qty	Type	Dowels length [mm]
	Qty	Type	Qty	Type	60	80	100	120	140	160
BT280-B	52	CNA4.0x50	7	STD12	4.8	6.1	7.3	8.5	9.9	11.3	22.8
BT320-B	60	CNA4.0x50	8	STD12	5.5	6.8	8.3	9.7	11.1	12.9	26.2
BT360-B	68	CNA4.0x50	9	STD12	6.1	7.6	9.2	10.9	12.4	14.4	29.6
BT400-B	76	CNA4.0x50	10	STD12	6.7	8.3	10.1	12.1	13.8	15.8	33
BT440-B	84	CNA4.0x50	11	STD12	7.3	9.1	11	13.2	15.2	17.2	36.5
BT480-B	92	CNA4.0x50	12	STD12	7.9	9.8	11.9	14.3	16.6	18.7	39.9
BT520-B	100	CNA4.0x50	12	STD12	8.6	10.6	12.8	15.4	17.8	20.1	43.3
BT560-B	108	CNA4.0x50	12	STD12	9.2	11.3	13.8	16.5	19.1	21.5	46.7
BT600-B	116	CNA4.0x50	12	STD12	9.8	12.1	14.7	17.6	20.4	23	50.1

The joist shall have as minimum a width = length of steel dowel.

The capacities R₄ are for all length of steel dowel.

References	Product characteristic capacities - Timber beam to timber post - partial nailing
	Number of Fasteners				Post width	Product characteristic capacities - Timber C24 [kN]
	Header		Joist		Min	R_1,k						R_2,k
	Qty	Type	Qty	Type		Dowels length [mm]						Dowels length [mm]
	Qty	Type	Qty	Type		60	80	100	120	140	160	60	80	100	120	140	160
BT280-B	28	CNA4.0x50	7	STD12	96	52	54.7	57.5	60.5	62	62	44.6	46.9	49.3	51.9	53.1	53.1
BT320-B	32	CNA4.0x50	8	STD12	96	61.8	65.1	68.1	70.7	70.9	70.9	54.1	57	59.6	61.9	62	62
BT360-B	36	CNA4.0x50	9	STD12	96	71.7	75.5	78.5	79.8	79.8	79.8	63.7	67.1	69.8	70.9	70.9	70.9
BT400-B	40	CNA4.0x50	10	STD12	96	81.4	85.7	88.4	88.6	88.6	88.6	73.3	77.1	79.6	79.7	79.7	79.7
BT440-B	44	CNA4.0x50	11	STD12	96	91	95.8	97.5	97.5	97.5	97.5	82.7	87.1	88.6	88.6	88.6	88.6
BT480-B	48	CNA4.0x50	12	STD12	96	100.3	105.6	106.4	106.4	106.4	106.4	91.9	96.8	97.5	97.5	97.5	97.5
BT520-B	52	CNA4.0x50	12	STD12	96	105.5	111.1	114.6	115.2	115.2	115.2	105.5	111.1	114.6	115.2	115.2	115.2
BT560-B	56	CNA4.0x50	12	STD12	96	109.9	115.7	120.3	124	124.1	124.1	109.9	115.7	120.3	124	124.1	124.1
BT600-B	60	CNA4.0x50	12	STD12	96	113.8	119.8	125	130.5	133	133	113.8	119.8	125	130.5	133	133

The joist shall have as minimum a width = length of steel dowel.

For beams with a slope β the capacities shall be multiply with the factor.

β	0°	15°	30°	45°
factor	1.0	0.95	0.9	0.85

The capacities from this table are also valid for partial nailing beam to beam.

R_2,k capacities are calculated as R_2,k = R_1,k x (nb of dowels - 1) / (nb of dowels).

The top dowel is not considered for the uplift capacities as it is placed in an open hole.

More detailed information are given in the ETA.

References	Product characteristic capacities - Timber beam to timber post - partial nailing
	Number of Fasteners				Post width	Product characteristic capacities - Timber C24 [kN]
	Header		Joist		Min	R_3,k						R_4,k
	Qty	Type	Qty	Type		Dowels length [mm]
	Qty	Type	Qty	Type		60	80	100	120	140	160
BT280-B	28	CNA4.0x50	7	STD12	96	4.5	5.6	6.7	7.7	8.9	10.1	13.7
BT320-B	32	CNA4.0x50	8	STD12	96	5.2	6.4	7.7	8.8	10.2	11.5	15.7
BT360-B	36	CNA4.0x50	9	STD12	96	5.8	7.2	8.6	9.9	11.5	12.9	17.6
BT400-B	40	CNA4.0x50	10	STD12	96	6.5	8	9.6	11	12.7	14.4	19.6
BT440-B	44	CNA4.0x50	11	STD12	96	7.1	8.8	10.5	12.1	14	15.8	21.6
BT480-B	48	CNA4.0x50	12	STD12	96	7.7	9.5	11.5	13.2	15.3	17.2	23.5
BT520-B	52	CNA4.0x50	12	STD12	96	8.4	10.3	12.4	14.3	16.6	18.7	25.5
BT560-B	56	CNA4.0x50	12	STD12	96	9	11.1	13.4	15.4	17.8	20.1	27.4
BT600-B	60	CNA4.0x50	12	STD12	96	9.7	11.9	14.4	16.5	19.1	21.5	29.4