The more common solution is to provide a 30 counter height on the clerk side and a 42 high transaction counter on the client side.
Standard transaction counter height.
This counter is to be no lower than 28 inches and no more than 36 inches maximum above the floor.
7 2 1 in areas used for transactions where counters have cash registers and are provided for sales or distribution of goods or services to the public at least one of each type shall have a portion of the counter which is at least 36 in 915mm in length with a maximum height of 36 in 915 mm above the finish floor.
The counter adjacent to the accessible checkout aisle has a maximum height of 38 inches.
The non ada transaction counter that is used by the patient is typically 42 inches high for reference.
The ada counter is to have a 36 inch minimum length for a parallel approach or a 30 inch minimum length for a forward approach.
The counter adjacent to the aisle may not exceed 38 inches in height.
The counter surface height shall be 38 inches 965 mm maximum above the finish floor or ground.
In all cases accessible checkout counters must be no less than 36 inches long.
Patron s transaction counter see detail a counter depth and computer workstation see detail c provide height adjustable workstation with a range of 32 to 47 provide storage space under.
In addition a portion of the counter shall be at least 36 inches long to allow for ease of movement during the transaction.
The top of the counter edge protection shall be 2 inches 51 mm maximum above the top of the counter surface on the aisle side of the check out counter.
Counter can be adjustable with a range of 24 32 inches in height.
If the checkout counter has a lip or similar extension for doing such things as writing checks the lip may not exceed 40 inches in height.
The number of accessible aisles that is needed depends on the total number of checkout aisles provided.
The counter height dimension is measured from the surface of the finished floor to the top of the reception counter and should be no higher than 36 inches leaving it within reaching range for the visitor.
An access aisle adjacent to an accessible checkout.
See this detail the 42 height offers decent screening for the equipment and cables that would otherwise be exposed to view and tinkering.