Quiz on Concrete Structures

What is not an advantage of solid reinforced concrete structures?

• Low rigidity

• Ability to withstand dynamic loads and special loads

• Quick construction, less affected by weather

• Can create any shape

What is not a disadvantage of precast reinforced concrete structures?

• Low rigidity

• Complexity in handling the joint between old and new concrete

• Complexity in organizing precast production

• All are incorrect

According to TCVN, what is the test sample to determine the compressive strength of concrete?

• Prism sample with a diameter of d=16cm and height h=2d

• Cube sample with a side length of a=10 or 15 or 20cm

• Cube sample with a side length of a=15cm

• Square base prism sample with a side length of a=15cm

What is the loading rate for the concrete strength test according to the standard?

• 0.2 kg/cm2/s

• 0.2N/mm2/s

• 20 N/mm2/s

• 20 kg/cm2/s

According to the nature of load effects, how many types are there?

• 2 types.

• 3 types.

• 4 types.

• 5 types.

Wind is what type of load?

• Static

• Special

• Frequent

• All are incorrect

What are the properties of load effects?

• 2 types.

• 3 types.

• 4 types.

• 5 types.

What type of load is wind?

• Static

• Special

• Permanent

• All are incorrect

What is the purpose of combining internal forces?

• To calculate rebar

• To find the most dangerous internal force in the structure

• To facilitate the design process

• To determine the most dangerous cross-section

Which task is not a task of distributed rebar in the slab?

• To withstand stresses caused by concrete shrinkage and temperature changes

• To connect the load-bearing rebars to form a mesh

• To withstand shear force

• To distribute the effect of concentrated loads.