Would advice you construct for minimum of 50 birds. 10 is not economical. It will be a very tiny coop that might compromise standard specifications for poultry unit construction. Not withstanding floor space should be 2sqt per bird layers and 1 sqft for broilers. Solid wall be 3 ft high and the remaining meshed with chicken wire.the area should be rectangular in shape not any other and in an east-west orientation.