AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+
In steel structures, structural steel is the main ...
- ANSWER-Load carrying material to transfer
the load within them and to transfer load to the
ground
High carbon steel has .. ductility - ANSWER-
Low
Toughness definition - ANSWER-Ability of
material to resist (absorb) impact load
Brittle fracture definition - ANSWER-At low
temperature the steel fails on impact loading
due to reduction in ductility and toughness
,Steel corrodes in ... - ANSWER-Moist air, sea
water and acid
Hardness definition - ANSWER-Resistance of
the material to intentions and scratching
Brinell harness and rockwell hardness number
are used to ... - ANSWER-Measure hardness
List 2 common steel structures - ANSWER-1.
Roof trusses
2. Crane girders, columns, beams
3. Plate girders, bridges
4. Transmission towers
3 Advantages of structural steel - ANSWER-1.
High compressive & tensile strength per unit
weight
2. Low construction weight
3. Good aesthetic view
4. Good quality and durability
5. Very high speed of construction
6. Reusability and scrap value
, 7. Better solution to cover large span and tall
structures
2 Disadvantages of structural steel - ANSWER-
1. High initial cost
3. Corrosion
3. Low fire resistance
The 2 main steps to steel making - ANSWER-1.
Iron is extracted from iron ores like
haematite, limestone, magnetite in furnace
2. Oxygen is passed through molten iron to
remove carbon and impurities to make steel
Adding chrome, nickel, phosphorous can impart
.... - ANSWER-Special properties in steel
Semi finished products from the steel making
machine are hot rolled to ... - ANSWER-Make
different sections like bars,
plates, angles, sections
Adding carbon to steel ... - ANSWER-Increases
the tensile strength