Test III

Select the best possible answer out of the choices from the list to the statements (multiple choice):

1. In the case of slipform building, the formwork … .

a. is firmly aligned to the starter with the means of yokes.

b. is installed rigidly to the crossbeams.

c. is erected only once and remains intact until the entire structure is completed.

d. is continually removed to newer locations and then re-erected.

2. It is very important that the entire structure … .

a. can all act simultaneously so that the whole slipform shuttering moves upwards.

b. could have inserts to support floor slabs after the walls are constructed.

c. could have inserts for openings like doors and windows.

d. be such that its rigidity and shape is maintained at all times.

3. …………………… are a very vital part of efficient slipform construction.

a. Accuracy and continual casting for constructing a monolithic structure

b. The design of the working deck and the yokes and horizontal crossbeams

c. The cohesive characteristics between the steel and concrete

d. The rigidity of the supporting platform and availability of lifting equipment

4. Slipform methods of construction can also be adapted to … .

a. building of driveways and sidewalks.

b. finishing of concrete floors and pavements.

c. inserts for openings like doors and windows.

d. horizontal structures such as paving, canals, and tunneling.

5. This allows the shuttering to move easily and eliminates any drag that concrete can cause on the shutters to prevent … .

a. its free upward movement.

b. inclination towards each other at the top.

c. any lag from one part to the other.

d. deflection from the correct alignment.

Test IV

Complete the sentences by filling in the correct word that fits a statement (gap fill). Choose the appropriate words from the word bank given below.

A. yokes B. supporting C. lag D. between

E. simultaneously F. technique G. intact H. thicknesses

I. advantages J. to retain K. pouring L. structures

1. Accuracy and continual casting for constructing a monolithic structure are its greatest …… .

2. The slipform technique of construction allows for the continuous …… of concrete into walls of a structure.

3. The slipform shuttering is then firmly aligned to this starter with the means of …… on each side of the shuttering.

4. The heights of such slipform shuttering will normally be …… 1. 1 meters to 1. 5 meters in height.

5. A major cost of concrete structure construction comes in the form of the required ormwork …… the concrete.

6. The rigidity of the …… platform is also essential so that all parts of the structure move simultaneously.

7. If there is any …… from one part to the other, this can cause the shuttering to drag and make it difficult to be pulled up.

8. It is also possible to reduce wall …… as the construction gains height.

9. Slipform methods of construction can also be adapted to horizontal …… .

10. Hydraulic jacks are installed rigidly to the crossbeams that can all ac …… .

UNIT 8