Connectors for Cross Laminated Timber (CLT) Structures

AB255HD

Reinforced Angle Bracket for CLT

The AB255HD angle bracket is developped for CLT construction. Flexible, it is designed for both shear and vertical loading. With skewed full threaded screws, it enables very high uplift capacities and it can be hidden under concrete screed.

Technical Data Sheet

CE Marking

ETA

Service class 2

Indoor

Electrogalvanized steel Z275

Product Details

Images

C_AB255HD_InstIll_Ill_Instld_with_skewed_screw_jig_EU_CN.jpg

Features

Material

Galvanized steel S250GD + Z275 according to EN 10346
Thickness 3 mm

Benefits

Ideal for use in CLT buildings,
Great versatility: can be installed on wooden support and concrete support,
High performance for horizontal (F₂ / F₃) and vertical (F₁) loads directions.

Application

Suitable On

Supporting member: solid wood, glulam, concrete, steel...
Supported member: solid wood, glulam...

Scope

Solid panels,
Cross laminated panel (CLT).

Technical Data

Dimensions

Product dimensions

References	Product dimensions [mm]				Holes flange A		Holes flange B			Box Quantity
References	A	B	C	t	Ø5	Ø14	Ø5	Ø9	Ø14	Box Quantity
AB255HD	123	100	255	3	56	2	41	5	4	10

Simplified characteristic capacities - Timber to timber - 1 angle bracket - Nailing pattern 1

References	Simplified product capacities - Timber to timber – Nail pattern 1
	Fasteners						Simplified characteristic capacities - Timber C24 - 1 angle bracket per connection [kN]
	Flange A		Flange B				R_1.k		R_2.k = R_3.k		R_4.k		R_5.k
	Qty	Type	Qty	Type	Qty	Type	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50
AB255HD	26	CNA/CSA	5	ESCRFTC8.0x140	13	CNA/CSA	51	51	45.7	46	15.1	15.1	10.2	10.2

The published characteristic capacity is based on short term load duration and service class 2 according to EC5 (EN 1995) – k_mod = 0.9. For other load duration and service class, please refer to the ETA to get more accurate capacities.
The value in the table above can be used if the panel can't rotate.
The R_1,k values are valid for any quantity of CNA/CSA fasteners on flange B.
Values with other ESCRFTC length are availables in ETA.

Simplified characteristic capacities - Timber to timber - 1 angle bracket - Nailing pattern 2

References	Simplified product capacities - Timber to timber – Nail pattern 2
	Fasteners						Simplified characteristic capacities - Timber C24 - 1 angle bracket per connection [kN]
	Flange A		Flange B				R_1.k		R_2.k = R_3.k		R_4.k		R_5.k
	Qty	Type	Qty	Type	Qty	Type	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50
AB255HD	30	CNA/CSA	5	ESCRFTC8.0x200	13	CNA/CSA	62.2	62.2	49.7	53.5	15.1	15.1	10.2	10.2

The published characteristic capacity is based on short term load duration and service class 2 according to EC5 (EN 1995) – k_mod = 0.9. For other load duration and service class, please refer to the ETA to get more accurate capacities.
The value in the table above can be used if the panel can't rotate.
The R_1,k values are valid for any quantity of CNA/CSA fasteners on flange B.
Values with other ESCRFTC length are availables in ETA.

Simplified characteristic capacities - Timber to timber - 1 angle bracket - Nailing pattern 3

References	Simplified product capacities - Timber to timber – Nail pattern 3
	Fasteners						Simplified characteristic capacities - Timber C24 - 1 angle bracket per connection [kN]
	Flange A		Flange B				R_1.k		R_2.k = R_3.k		R_4.k		R_5.k
	Qty	Type	Qty	Type	Qty	Type	CNA4.0x60	CSA5.0x50	CNA4.0x60	CNA5.0x50	CNA4.0x60	CSA5.0x50	CNA4.0x60	CSA5.0x50
AB255HD	26	CNA/CSA	3	ESCRFTC8.0x200	13	CNA/CSA	46.8	46.8	32.4	43.4	15.1	15.1	10.2	10.2

The published characteristic capacity is based on short term load duration and service class 2 according to EC5 (EN 1995) – k_mod = 0.9. For other load duration and service class, please refer to the ETA to get more accurate capacities.
The value in the table above can be used if the panel can't rotate.
The R_1,k values are valid for any quantity of CNA/CSA fasteners on flange B.
Values with other ESCRFTC length are availables in ETA.

Installation

Fasteners

On wood :

CNA annular ring shank nails
CSA screws
Refer to performance tables for relevant sizes

On concrete :

Chemical anchor: AT-HP resin + LMAS M12-150/35 threaded rod.

Installation

Install the CNA nails or CSA screws first, then set the ESCRFTC8.0 full threaded screws at an approximate 70° angle. (A jig is recommanded for skewed screw installation - SSJ jig is available)
The possible screwing/nailing pattern are displayed below: