10+ Raketech Interview Questions and Answers

Various codes are used in structural design, including ASCE 7, ACI 318, AISC 360, and IBC.

• ASCE 7: American Society of Civil Engineers standard for minimum design loads for buildings and other structures

• ACI 318: American Concrete Institute standard for the design and construction of concrete structures

• AISC 360: American Institute of Steel Construction standard for the design and construction of steel structures

• IBC: International Building Code, a model building code adopted by ...read more

Factors considered in structural design

• Load capacity and type of load

• Material strength and durability

• Environmental factors such as wind, earthquake, and temperature

• Building codes and regulations

• Aesthetics and functionality

• Cost and budget constraints

There are several types of failure in structures, including collapse, deformation, and cracking.

• Collapse: when the structure completely gives way and falls apart

• Deformation: when the structure bends or warps under stress

• Cracking: when the structure develops cracks due to stress or other factors

• Other types of failure include buckling, fatigue, and corrosion

• Examples of failures include the collapse of the Tacoma Narrows Bridge, the deformation of the Millennium Bridge in London...read more

Cracks in concrete can be caused by various factors such as shrinkage, settlement, overloading, and temperature changes.

• Shrinkage due to drying and cooling of concrete

• Settlement of the foundation or subgrade

• Overloading beyond the capacity of the concrete

• Temperature changes causing expansion and contraction

• Chemical reactions causing corrosion or deterioration

• Improper mixing, placing, or curing of concrete

• Design flaws or inadequate reinforcement

M20 is a designation for a concrete mix with a compressive strength of 20 N/mm² after 28 days of curing.

• M stands for mix and refers to the mix ratio of cement, sand, and aggregate.

• 20 refers to the compressive strength of the concrete in N/mm² after 28 days of curing.

• M20 is a commonly used designation for concrete in construction projects.

Various tests are performed on concrete to ensure its quality and strength.

• Compression test to determine the compressive strength of concrete

• Slump test to measure the consistency of fresh concrete

• Air content test to determine the amount of air in concrete

• Water permeability test to assess the durability of concrete

• Chloride permeability test to determine the resistance of concrete to chloride ion penetration

Yes, I have knowledge of design software such as AutoCAD, Revit, and SAP2000. I am also proficient in Excel.

• Proficient in AutoCAD, Revit, and SAP2000

• Skilled in using Excel for data analysis and modeling

• Familiar with other design software such as SketchUp and Rhino

• Continuously learning and updating my skills in design software and Excel

The steps of structure design involve planning, analysis, design, and construction.

• Planning involves determining the purpose, location, and materials for the structure.

• Analysis involves calculating the loads and stresses the structure will experience.

• Design involves creating a detailed plan for the structure, including dimensions and materials.

• Construction involves building the structure according to the design plan.

Comp strength refers to the compressive strength of a material.

• It is the maximum compressive stress a material can withstand before failure.

• It is an important factor in designing structures that can withstand heavy loads.

• For example, the comp strength of concrete is typically measured in pounds per square inch (psi).

BMD stands for bending moment diagram which shows the variation of bending moment along the length of a beam under given loading.

• BMD is a graphical representation of the bending moment at different points along the length of a beam.

• It is used to determine the maximum bending moment and the location of maximum bending moment in a beam.

• BMD is plotted by taking the first derivative of the shear force diagram.

• The area under the BMD curve between two points gives the change in slo...read more

The ratio of M20 is 1:1.5:3

• M20 is a mix of concrete with a compressive strength of 20 MPa

• The ratio of M20 is 1 part cement : 1.5 parts sand : 3 parts aggregate

• This ratio is commonly used in construction for foundations, columns, and beams

Beam detailing of reinforcement involves adding steel bars to the beam to increase its strength and durability.

• Determine the required amount of reinforcement based on the load and span of the beam

• Place the steel bars in the beam according to the design specifications

• Ensure proper spacing and cover of the reinforcement to prevent corrosion

• Use stirrups or ties to hold the bars in place and prevent buckling

• Label the reinforcement on the drawing for easy identification during con...read more