The first known doors appear in Egyptian tomb paintings, which show them as single or double doors, each made of a single piece of wood. People may have believed they were doors to the afterlife, and some include designs of life after death. In Egypt, where the climate is intensely dry, the doors were not framed against warping, but in other countries framed doors were required, which, according to Vitruvius (iv. 6.) was done with stiles (sea/si) and transoms (see: Frame and panel), the panels closed with tympanums "Tympanum (architecture)") set in grooves in the stiles and transoms. The uprights were the vertical planks, one of which, tenoned") or hinged, is known as a hanging upright, the other as a middle or meeting upright. The horizontal crossbars are the top, bottom and intermediate bar.

The oldest doors were made of wood, like those mentioned in the biblical depiction of King Solomon's Temple of olive wood (I Kings vi. 31-35), which were carved and covered with gold. The doors Homer mentions appear to have been lined with silver or brass. In addition to olive wood, elm, cedar, oak and cypress were used. Two doors more than 5,000 years old have been found by archaeologists near Zurich, Switzerland.[4][5]​.

Ancient doors were hung with bolts at the top and bottom of the hanging stile, which worked into sockets in the lintel and sill, the latter in some hard stone such as basalt or granite. The sills found in Nippur, dating back to 2000 BC. C., were made of dolerite. The tenons of the Balawat doors were covered in bronze (now in the British Museum). These doors or gates were hung in two leaves, each about 2.54 m (100 in) wide and 8.2 m (26.9 ft) high; They were covered with bands or strips of bronze, 25.4 cm (10.0 in) high, covered with repoussé decoration of figures. The wooden doors appeared to be about 3 in (7.62 cm) thick, but the hanging stile was over 14.2 in (360 millimeters) in diameter. Other bronze coverings of various sizes show that this was a universal method adopted to protect wooden pivots. In the Hauran of Syria, where wood is scarce, doors were made of stone, and one measuring 1.63 by 0.79 m (64.2 by 31.1 in) is in the British Museum; The band of the meeting post shows that it was one of the leaves of a double door. At Kuffeir, near Bostra in Syria, Burckhardt found stone gates 2.74 to 3,048 m (9 to 10.0 ft) high, which were the entrance gates to the city. In Etruria many stone doors are referred to by Dennis.

The doors of Ancient Greece and Ancient Rome could be single, double, triple, sliding "Sliding doors (vehicles)") or folding, in the latter case the leaves were folding and folded back. In Theron's tomb at Agrigentum there is a single four-leaf door carved in stone. In the Blundell collection there is a bas-relief of a temple with double doors, each leaf with five panels. Among the extant examples, the bronze church doors of SS. Cosmas and Damiano "Church of San Cosmas and San Damiano (Burgos)"), in Rome, are important examples of Roman metalwork from the best period; They are of two leaves, each with two panels, and are framed in bronze. Those of the Pantheon are similar in design, with narrow horizontal panels in addition, at the top, bottom and center. Two other bronze doors from Roman times are found in the Lateran Basilica.

Greek scholar Heron of Alexandria created the first known automatic door in the century AD. C. during the time of Roman Egypt.[6]​ The first automatic door activated by a foot sensor was manufactured in China during the reign of Emperor Yang of Sui (r. 604-618), who had one installed for his royal library.[6]​ Water-operated doors appeared in the illustrations of automata by the Arab inventor Al-Jazari.[7]​[8]​.

Automatic doors

Automatic doors open thanks to an operator who pulls the door, generally they operate by a dry pulse, to which a push button can be connected, or a signal receiver for infrared remote controls, proximity card wiegand, mifare.

The need to regulate the use and signaling of doors and gates in the workplace is to prevent workplace accidents from occurring when workers pass goods or transit within industrial warehouses.

Doors must be designed and manufactured according to their function and around other aspects such as:

Architectural doors have numerous general and specialized uses. Doors are generally used to separate interior spaces (closets, rooms, etc.) for reasons of convenience, privacy, security and protection. Doors are also used to secure passages to a building from the outside, for climate control and security reasons.

Doors are also applied in more specialized cases:

The first known doors appear in Egyptian tomb paintings, which show them as single or double doors, each made of a single piece of wood. People may have believed they were doors to the afterlife, and some include designs of life after death. In Egypt, where the climate is intensely dry, the doors were not framed against warping, but in other countries framed doors were required, which, according to Vitruvius (iv. 6.) was done with stiles (sea/si) and transoms (see: Frame and panel), the panels closed with tympanums "Tympanum (architecture)") set in grooves in the stiles and transoms. The uprights were the vertical planks, one of which, tenoned") or hinged, is known as a hanging upright, the other as a middle or meeting upright. The horizontal crossbars are the top, bottom and intermediate bar.

The oldest doors were made of wood, like those mentioned in the biblical depiction of King Solomon's Temple of olive wood (I Kings vi. 31-35), which were carved and covered with gold. The doors Homer mentions appear to have been lined with silver or brass. In addition to olive wood, elm, cedar, oak and cypress were used. Two doors more than 5,000 years old have been found by archaeologists near Zurich, Switzerland.[4][5]​.

Ancient doors were hung with bolts at the top and bottom of the hanging stile, which worked into sockets in the lintel and sill, the latter in some hard stone such as basalt or granite. The sills found in Nippur, dating back to 2000 BC. C., were made of dolerite. The tenons of the Balawat doors were covered in bronze (now in the British Museum). These doors or gates were hung in two leaves, each about 2.54 m (100 in) wide and 8.2 m (26.9 ft) high; They were covered with bands or strips of bronze, 25.4 cm (10.0 in) high, covered with repoussé decoration of figures. The wooden doors appeared to be about 3 in (7.62 cm) thick, but the hanging stile was over 14.2 in (360 millimeters) in diameter. Other bronze coverings of various sizes show that this was a universal method adopted to protect wooden pivots. In the Hauran of Syria, where wood is scarce, doors were made of stone, and one measuring 1.63 by 0.79 m (64.2 by 31.1 in) is in the British Museum; The band of the meeting post shows that it was one of the leaves of a double door. At Kuffeir, near Bostra in Syria, Burckhardt found stone gates 2.74 to 3,048 m (9 to 10.0 ft) high, which were the entrance gates to the city. In Etruria many stone doors are referred to by Dennis.

The doors of Ancient Greece and Ancient Rome could be single, double, triple, sliding "Sliding doors (vehicles)") or folding, in the latter case the leaves were folding and folded back. In Theron's tomb at Agrigentum there is a single four-leaf door carved in stone. In the Blundell collection there is a bas-relief of a temple with double doors, each leaf with five panels. Among the extant examples, the bronze church doors of SS. Cosmas and Damiano "Church of San Cosmas and San Damiano (Burgos)"), in Rome, are important examples of Roman metalwork from the best period; They are of two leaves, each with two panels, and are framed in bronze. Those of the Pantheon are similar in design, with narrow horizontal panels in addition, at the top, bottom and center. Two other bronze doors from Roman times are found in the Lateran Basilica.

Greek scholar Heron of Alexandria created the first known automatic door in the century AD. C. during the time of Roman Egypt.[6]​ The first automatic door activated by a foot sensor was manufactured in China during the reign of Emperor Yang of Sui (r. 604-618), who had one installed for his royal library.[6]​ Water-operated doors appeared in the illustrations of automata by the Arab inventor Al-Jazari.[7]​[8]​.

Automatic doors

Automatic doors open thanks to an operator who pulls the door, generally they operate by a dry pulse, to which a push button can be connected, or a signal receiver for infrared remote controls, proximity card wiegand, mifare.

The need to regulate the use and signaling of doors and gates in the workplace is to prevent workplace accidents from occurring when workers pass goods or transit within industrial warehouses.

Doors must be designed and manufactured according to their function and around other aspects such as:

Architectural doors have numerous general and specialized uses. Doors are generally used to separate interior spaces (closets, rooms, etc.) for reasons of convenience, privacy, security and protection. Doors are also used to secure passages to a building from the outside, for climate control and security reasons.

Doors are also applied in more specialized cases: