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  2. Hollow structural section - Wikipedia

    en.wikipedia.org/wiki/Hollow_structural_section

    In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...

  3. Metal profiles - Wikipedia

    en.wikipedia.org/wiki/Metal_profiles

    Metal profiles sheets have a high recycled scrap steel content and all steel is recyclable. Many steel components can be unbolted and even reused for future applications. The possibility of reusing building elements makes steel construction even more sustainable than the already significant contribution of today's simple material recycling.

  4. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    A subset series of the Unified Thread Standard, with controlled root radius and increased minor diameter. For applications requiring maximum fatigue resistance amid chronic vibration (such as in aircraft). UNJF: Unified National "J" series Fine: A subset series of the Unified Thread Standard, with controlled root radius and increased minor ...

  5. Rake angle - Wikipedia

    en.wikipedia.org/wiki/Rake_angle

    Milling Rake [4] Sawing Rake [5] Aluminum: 12°-25° 40° 35° 12°-25° Brass: 3°-14° 8° 0° 3°-14° Bronze: 5°-14° 0° 5°-14° Cast Iron, Gray 0°-6° 0° 5° 3°-6° Copper: 18°-25° 16° 18°-25° Polystyrene: 20°-25° 20°-25° PVC: 20°-25° 20°-25° Stainless Steel: 8°-10° 8° 8° 8°-10° Steel, Mild 12°-14° 20° 8°-15 ...

  6. T-slot structural framing - Wikipedia

    en.wikipedia.org/wiki/T-slot_structural_framing

    Although no published standard defines the system, it is produced in a series of conventional sizes which allows for compatibility between manufacturers. There is a variation on T-slot profiles known as V-slot rails where V-slot wheels are slotted into the V-shaped channels of the framing for linear motion in a 3D printer or other CNC machine .

  7. Formwork - Wikipedia

    en.wikipedia.org/wiki/Formwork

    This formwork is built out of prefabricated modules with a metal frame (usually steel or aluminium) and covered on the application side with material having the wanted surface structure (steel, aluminum, timber, etc.). The two major advantages of formwork systems, compared to traditional timber formwork, are speed of construction (modular ...

  8. Rigid frame - Wikipedia

    en.wikipedia.org/wiki/Rigid_frame

    In structural engineering, a rigid frame is the load-resisting skeleton constructed with straight or curved members interconnected by predominantly rigid connections, which resist movements induced at the joints of members.

  9. Steel square - Wikipedia

    en.wikipedia.org/wiki/Steel_square

    The traditional steel square's rafter table (patented April 23,1901) is limited in that it does not have tables that allow for work with unequal pitched roofs. Irregular hip/valley rafters are characterized by plan angles that are not equal or 45°. The top plates can be 90° at the outside corners or various other angles.