Connectors

Outdoor architecture

Timber frame structure

CLT connection

Holdowns

Connectors for decks and terraces

Frame wall

Hold downs for CLT

AKR-Z

Angle bracket

These brackets allow optimum connection between wood and other building materials such as concrete and steel. This is an economic connection that can be used in many areas. The types AKR and AKR-L differ in having either a hole or an oblong hole for the bolt, in the smaller flange.. AKR bracket is 3 mm thick and the edges are reinforced with rib.

Technical Data Sheet

CE Marking

ETA

New

Service class 3

ZPRO

EPD

Product Details

Images

Features

Material

Steel:

S250GD + ZPRO

Corrosion protection:

ZPRO coating - corresponding to a zinc layer of approx. 55 μm

Benefits

Load capacity in all directions
Optimized capacities for partnailing and fullnailing
One- or two-sided connections
Possible mounting with distance from the support at tension connections
Optimized bolt utilization

Application

Applications

Supporting member:

Concrete, steel

Supported member:

Solid wood, engineered wood

When to use

The AKR brackets allow optimum connection between wood and other building materials such as concrete and steel.
According to their overall ZPRO surface the AKR-Z angle brackets could be used in outdoor areas

Technical Data

Product Dimensions

Dimensions

Reference	Connector Dimensions
	Other				Product Dimensions[mm]				Joist		Flange B
	Tun / DB nr.	NOB nr.	Qty per Box	Weight[kg]	A[mm]	B[mm]	C[mm]	t[mm]	Round		Round			Obround
	Tun / DB nr.	NOB nr.	Qty per Box	Weight[kg]	A[mm]	B[mm]	C[mm]	t[mm]	Ø5	Ø13.5[mm]	Ø5[mm]	Ø11[mm]	Ø13.5[mm]	Ø13.5x25[mm]
AKR95Z	2048459	55360544	25.0	0.24	95	85	65	3	9	-	2	1	1	-
AKR95LZ	2048462	55360563	25.0	0.24	95	85	65	3	9	-	2	1	-	1
AKR135Z	2048465	55360578	25.0	0.3	135	85	65	3	14	1	2	1	1	-
AKR135LZ	2048466	55360616	25.0	0.3	135	85	65	3	14	1	2	1	-	1
AKR285Z	2048467	55360620	25.0	0.56	285	85	65	3	26	3	2	1	1	-
AKR285LZ	2048468	55360635	25.0	0.5	285	85	65	3	26	3	2	1	-	1

Below you will find load details to the nail pattern: fullnailing, partnailing and post connection. Further connection options, see the corresponding ETA.

Characterisitic capacities - Full nailing

Dimensions

Reference	Holdowns capacity
	Product characteristic capacities - Full nailing - 2 brackets per connection
	Nail pattern	Number of Fasteners				Characteristic capacity - 2 angle brackets per connection - full nailing[kN]
		Flange B		Joist		R4/5,k	R₁,ₖ			R₂,ₖ=R₃,ₖ
		Qty	Type	Qty	Type	CNA4.0x40/50/60	CNA4.0x40	CNA4.0x50	CNA4.0x60	CNA4.0x40	CNA4.0x50	CNA4.0x60
AKR95Z	1	1.0	M12**	8.0	CNA*	15.75 / kmod	min (17.55 ; 25.04/kmod + 13.2)	min (22.64 ; 25.04/kmod + 17.6)	min (26.48 ; 25.04/kmod + 22)	5	6.2	6.9
AKR95LZ	1	1.0	M12**	8.0	CNA*	-	min (13.31 ; 25.04/kmod + 8.92)	min (17.4 ; 25.04/kmod + 11.89)	min (20.89 ; 25.04/kmod + 14.87)	4.4	5.6	6.4
AKR135Z	5	1.0	M12**	13.0	CNA*	15.75 / kmod	min (31.78 ; 25.04/kmod + 8.69)	min (40.69 ; 25.4/kmod + 11.58)	min (46.92 ; 25.04/kmod + 14.48)	8	10.1	11.2
AKR135LZ	5	1.0	M12**	13.0	CNA*	-	min (24.88 ; 25.04/kmod + 5.87)	min (32.34 ; 25.4/kmod + 7.83)	min (38.36 ; 25.04/kmod + 9.78)	7.2	9.1	10.4
AKR285Z	15	1.0	M12**	25.0	CNA*	15.75 / kmod	min (45.25 ; 25.04/kmod + 8.69)	min (58.98 ; 25.04/kmod + 11.58)	min (70.31 ; 25.04/kmod + 14.48)	8.9	11.6	14.1
AKR285LZ	15	1.0	M12**	25.0	CNA*	-	min (32.96 ; 25.04/kmod + 5.87)	min (43.42 ; 25.04/kmod + 7.83)	min (52.87 ; 25.04/kmod + 9.78)	6.6	8.7	10.7

* Refer to Characteristic Capacity table columns for type of fasteners that can be used in Flange A. Capacities vary depending on fastener type used.

** The bolt design resistance requirement R_#,d is determined from (bolt factor x connection design load F_#,d) for the required load direction and fastener. Refer to the Simpson Strong-Tie anchor product range for suitable anchors. Typical anchor solutions depend on the concrete type, spacing and edge distances.

Factor for bolt calculation at 2 AKR connections
Load direction	k_ax	k_lat
F₁ Bolt 1 and 2	0,5	0
F_2/3 Bolt 1 and 2	0,2	0,5
F_4/5 Bolt 1 from F_1,d	1	0
F_4/5 Bolt 2	0,5	1

For load direction F4/5 applies: An additional tensile load (F_1,d) must be received and verified for the left AKR, and for both bolts.

$F^*_{1,d} = \frac{F_{4/5,d}\times(e-16,5mm)} {b+83mm}$

Combined load:

$\sqrt{\left ( \frac {F_{1,d}} {R_{1,d}} + \frac {F_{4/5,d}}{R_{4/5,d}} \right )^2 + \left ( \frac{F_{2/3,d}}{R_{2/3,d}} \right )} \le 1$

Characteristic capacities - Partial nailing

Reference	Holdowns capacity
	Product characteristic capacities - Partial nailing - 2 brackets per connection											Product characteristic capacities - Full nailing - 2 brackets per connection
	nail pattern	Number of Fasteners				Characteristic capacity - 2 angle brackets per connection - full nailing[kN]						Characteristic capacity - 2 angle brackets per connection - full nailing[kN]
		Joist		Flange B		R₁,ₖ			R₂,ₖ=R₃,ₖ			R4/5,k
		Qty	Type	Qty	Type	CNA4.0x40	CNA4.0x50	CNA4.0x60	CNA4.0x40	CNA4.0x50	CNA4.0x60	CNA4.0x40/50/60
AKR95Z	3	5.0	CNA*	1.0	M12**	min (10.3 ; 25.04/kmod + 12.62)	min (13.34 ; 25.04/kmod + 16.82)	min (15.72 ; 25.04/kmod + 21.04)	3.2	4	4.5	15.75 / kmod
AKR95LZ	3	5.0	CNA*	1.0	M12**	min (7.7 ; 25.04/kmod + 8.52)	min (10.1 ; 25.04/kmod + 11.36)	min (12.18 ; 25.04/kmod + 14.22)	2.9	3.6	4.1	-
AKR135Z	6	9.0	CNA*	1.0	M12**	min (21.19 ; 25.04/kmod + 8.69)	min (27.21 ; 25.04/kmod + 11.58)	min (31.54 ; 25.04/kmod + 11.58)	5.9	7.5	8.4	15.75 / kmod
AKR135LZ	6	9.0	CNA*	1.0	M12**	min (16.39 ; 25.04/kmod + 5.87)	min (21.35 ; 25.04/kmod + 7.83)	min (25.45 ; 25.04/kmod + 9.78)	5.2	6.6	7.6	-
AKR285Z	17	14.0	CNA*	1.0	M12**	min (27.93 ; (25.04/kmod + 3.93)	min (36.23 ; 25.04/kmod + 5.24)	min (42.8 ; 25.04/kmod + 6.55)	5.5	7.3	8.8	15.75 / kmod
AKR285LZ	17	14.0	CNA*	1.0	M12**	min (20.71 ; (25.04/kmod + 2.66)	min (27.2 ; 25.04/kmod + 3.54)	min (32.91 ; 25.04/kmod + 4.43)	4.1	5.5	6.7	-

* Refer to Characteristic Capacity table columns for type of fasteners that can be used in Flange A. Capacities vary depending on fastener type used.

** The bolt design resistance requirement R#,d is determined from (bolt factor x connection design load F#,d) for the required load direction and fastener. Refer to the Simpson Strong-Tie anchor product range for suitable anchors. Typical anchor solutions depend on the concrete type, spacing and edge distances.

Characteristic capacities - Post connection

Reference	Holdowns capacity
	Product characteristic capacities - Column nailing - 2 brackets per connection
	nail pattern	Number of Fasteners				Characteristic Capacities[kN]
		Joist		Flange B		R4/5,k	R1,k (2)			R₂,ₖ=R₃,ₖ
		Qty	Type	Qty	Type	CNA4.0x40/50/60	CNA4.0x40	CNA4.0x50	CNA4.0x60	CNA4.0x40	CNA4.0x50	CNA4.0x60
AKR95Z	2	5	CNA*	1.0	M12**	15.75 / kmod	min (11.5 ; 25.04/kmod + 5.97)	min (14.78 ; 25.04/kmod + 7.97)	min (17.19 ; 25.04/kmod + 9.96)	3.5	4.4	5
AKR95LZ	2	5	CNA*	1.0	M12**	-	min (8.83 ; 25.04/kmod + 4.04)	min (11.52 ; 25.04/kmod + 5.38)	min (13.76 ; 25.04/kmod + 6.73)	3.1	3.9	4.5
AKR135Z	7	8	CNA*	1.0	M12**	15.75 / kmod	min (20.49 ; 25.04/kmod + 3.93)	min (26.13 ; 25.04/kmod + 5.24)	min (29.94 ; 25.04/kmod + 6.55)	5.6	7	7.9
AKR135LZ	7	8	CNA*	1.0	M12**	-	min (16.31 ; 25.04/kmod + 2.66)	min (21.13 ; 25.04/kmod + 3.54)	min (24.91 ; 25.04/kmod + 4.43)	4.9	6.2	7.1
AKR285Z	16	22	CNA*	1.0	M12**	15.75 / kmod	min (41.66 ; 25.04/kmod + 3.93)	min (54.19 ; 25.04/kmod + 5.24)	min (64.34 ; 25.04/kmod + 6.55)	5.8	7.6	9.3
AKR285LZ	16	22	CNA*	1.0	M12**	-	min (30.58 ; 25.04/kmod + 2.66)	min (40.23 ; 25.04/kmod + 3.54)	min (48.85 ; 25.04/kmod + 4.43)	4.2	5.6	6.9