Longitudinal Shear

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Both end parts (i&j) have the same exposure class: Check on to apply same data to both i and j end of the element.

Shear Plane Type (7.4.2.3)

Factors which depend on the roughness of the interface. It is classified as follows:

Surface Type 1: The contact surface of the concrete in the precast members should be prepared as described in either 1) or 2) as appropriate.

1) Where the concrete has set but not hardened, the surface should be sprayed with a fine spray of water or brushed with a stiff brush, just sufficient to remove the outer mortar skin and expose the larger aggregate without disturbing it.

2) Where the treatment in 1) has proved impracticable the surface skin and laitance should be removed by sand blasting or the use of a needle gun and not by hacking.

Surface Type 2: The contact surface of the concrete in the precast member should be jetted with air and/or water to remove laitance and all loose material. No further roughening need to be carried out. (This type of surface is known as "rough as cast".)

Monolithic Construction

Interface Shear

Ls: Transverse length of the shear plane under consideration

Ae: Area of fully anchored reinforcement per unit length crossing the shear plane under consideration.

Fy: Characteristic strength of the reinforcement