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2. Door security - Wikipedia

   en.wikipedia.org/wiki/Door_security

   Typically, door frames are solid wood. Residential doors also frequently contain wood. Steel doors with Multi locking system are recommended by construction professionals as important equipment in your security checklist. This type of door often comes with a wooden finish to maintain a natural aesthetic in their external appearance.

3. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   Steel doors are another major type of residential front doors; most of them come with a polyurethane or other type of foam insulation core – a critical factor in a building's overall comfort and efficiency. Steel doors mostly in default comes along with frame and lock system, which is a high cost efficiency factor compared to wooden doors.

4. Framing (construction) - Wikipedia

   en.wikipedia.org/wiki/Framing_(construction)

   Framing side by side units The erection of a wooden frame in Sabah, Malaysia The construction frames of a residential subdivision in Rogers, Minnesota in 2023. Framing, in construction, is the fitting together of pieces to give a structure, particularly a building, support and shape. [1]

5. Steel frame - Wikipedia

   en.wikipedia.org/wiki/Steel_frame

   Steel frame structure Rectangular steel frame, or "perimeter frame" of the Willis building (at right) contrasted against the diagrid frame at 30 St Mary Axe (at center), in London. Steel frame is a building technique with a " skeleton frame" of vertical steel columns and horizontal I-beams , constructed in a rectangular grid to support the ...

6. List of building materials - Wikipedia

   en.wikipedia.org/wiki/List_of_building_materials

   This is a list of building materials.. Many types of building materials are used in the construction industry to create buildings and structures.These categories of materials and products are used by architects and construction project managers to specify the materials and methods used for building projects.

7. Door breaching - Wikipedia

   en.wikipedia.org/wiki/Door_breaching

   This can be accomplished by calculating the net explosive weight (NEW) which is the equivalent weight of TNT that would be required to effect entry through various obstacles like reinforced concrete, plywood of various thicknesses, steel doors of various thicknesses, etc. [27] The net explosive weights of commonly used explosives is recorded so ...