What Is A Balanced Laminate

Awi qs is firm on using balanced construction which means laminate to laminate or cabinet liner.

What is a balanced laminate.

Balance is when both sides of the panel center plane are the same. With two sheets of plywood same thickness orientation and even number of plys is balanced. If you use melamine and you re caught by a sharp architect or gc you could get to do it over again. I used to use melamine laminate a long time ago we just prefer laying up laminate to liner it s faster for us.

Firstly a perfunctory definition is in order regarding a balanced laminate. Balance is what matters. Flexurally balanced is where d16 d26 0 and bend twist coupling does not exist. Also sometimes called an anti symmetric laminate when unidirectional plies are used.

Countertops or cabinet members on the other hand merely require some form of balancing material. An example of a balanced laminate is 0 45 45 90 45 45 0 whereas an unbalanced laminate would be 0 45 45 90 45 45 90. 1 an unbalanced laminate countertop is one that does not have backer applied to the underside of the countertop core substrate. Laminate fabrication vary with the product.

A balanced laminate is one that for every θ ply in the lay up there is an equivalent θ ply in the lay up. Angle plies for example are good for carrying shear loads while 0 and 90 are good for carrying tensile and compressive loads. Balanced construction unbalanced construction laminate countertops. Laminate orientation code repeating groups of plies within a laminate can be placed in parentheses.

Balanced laminates a laminate is balanced when it consists of pairs of layers of the same thickness and material where the angles of the plies are θand θ. The orientation of the plies ie 0 45 90 degrees will depend on the application and the load conditions of the laminate. Each complete laminate is enclosed in a set of brackets symmetric laminates with an even number of plies are represented by listing all plies on one side of the mid plane enclosed in brackets followed by the subscript s. A designer will need to ensure that for every α ply there is a α ply with the same material and thickness somewhere within stacking sequence irrespective of location.