Get to Know Your family Doors
But doors were an inescapable function of residing places and of other structures built by man afterward.
The first protection that man developed for himself was for cover up against the heat of the sun and from shivers in the night time and when it rained. It was naturally walled on all sides, whether of light materials or whatever was readily available then in his environs. A "doorway" structure had to be built somewhere thru which he'll leave or enter. A mandatory "cover" for the opening served as the first "door".
Doors, like all the remainder of man's inventions, developed into how we know them today. They differ barely in look according to cultural characteristic design and come in various sizes, made of different materials, painted, polished or lacquer-polished or left in its natural finish, coarse or smoothened.
As man continued to create structures that he'll "go into or exit from", doors are added as inescapable sub-structures. Cars, trucks, war tanks, boats, ships, planes and space crafts have them, sometimes in other names like hatch or flap. Some are locked, some aren't.
The ubiquity of doors ironically led straight to its loss of appreciation by its users ( to some degree ), excepting architects, workmen, builders, engineers and planners who are terribly picky about them and the way they are built and located. They are those who make it simple for us to get into and out of structures, to keep our privacy or open up into the freshness and warmth of the morning sun.
In this commercial modern and highly-specialised age, there are people and companies who dedicate their efforts, resources and time to building, designing, innovating, installing, packing and planning for doors and accessories. Door checks, door frames or jambs, doorhandles, locks, keys, hinges, sliders, stoppers, suspenders, for example. Are all covered in the door industry sub-sector under the general heading of the building and construction business.
Want to learn more about doors? Visit your nearest building-and-construction ironmongery store where you will be directed to the doors-and-accessories section and delight in the marvels of the "door world".