Fastening plates are used to form a welding attachment surface on the surface of in-situ cast and precast concrete structures. JAL^® fastening plates transfer heavy loads from the related structure to the concrete base. JAL^® fastening plates are suitable for deep structures where there is space for the plate's long grips. The plate is placed at the edge of the structure just the protective concrete layer (35 mm) distance from the edge. In edge placement, the plate is reinforced. The durability values of the JAL fastening plate are determined based on the placement distance. The JAL plate has three material options.

Fastening Plate Applications

• JAL^® fastening plates are used in concrete element and in-situ cast structure joints when the durability values of AKL® and KL plates are insufficient for plates of a comparable size.
• The joint transfers forces through the fastening plate's grips to the base concrete.
• The plate has short grips and is suitable for shallow structures.
• Durability values are determined for both reinforced and unreinforced structures.
• The plate can be reinforced for tensile and shear forces.
• Surface plate materials: S355J2+N and austenitic 1.4301 and 1.4401.

Joint Design

• The durability values of the fastening plate are determined according to the SFS-EN 1992-4:2018 standard.
• The fastening plate joint is designed using Anstar Oy's ASTEEL software.
• The sofware calculates the selected fastening plate's loads for fracture and accident situations.
• The software calculates the reinforcement of the fastening plate.
• With the ASTEEL software, the durability of the profile to be welded to the fastening plate and the weld joint are calculated.
• The software produces strength calculations for the fastening plate, the joint profile, and the weld.

AKLP and AKLJ Fastening Plate

AKLP and AKLJ fastening plates are suitable for shallow structures where there is space for the plate's short grips. The plate can also be used without reinforcement. The plate is placed at the edge of the structure at a minimum distance of the protective concrete layer (25 mm) from the edge. In edge placement, the plate is reinforced. The durability values of the fastening plate are determined based on the placement distance. The length of the fastening plate is made to order. The fastening plate has three material options.