Question

What are the advantages of a precast concrete structural frame? What are the disadvantages?

Why is fireproofing used in a steel frame construction?

How is cast-in-place concrete structural frame installed?

How are cast-in-place structural members supported while they cure?

What materials are used for formwork for columns?

What trade installs the reinforcing steel in cast-in-place structures?

How are bolted connection made during the construction of a steel framed building?

What work is necessary on structural steel members prior to arriving at the job site?

How does structural steel members get shipped to a job site? How are the member moved to the upper floors of a high rise building?

How are steel columns connected?

What type of materials used for flooring systems in a steel framed building?

What is the difference between a one way and a two way slab?

How are cast in place and precast concrete used in airport Construction?

What are flat roof's advantages? What are flat roof's disadvantages?

What type of equipment and materials are used for marine construction?

How is precast concrete used in highway construction?

In tunnel construction, What materials is used for the finish on the interior of a rock tunnel?

Describe a curtain wall system? How is it attached to the structural frame?

What material are used for curtain walls?

What are the first steps before taken by a contractor before utilities are installed in a road?

What construction methods are used if bedrock is encountered during utility installation? if poor soil is encountered

What construction method are available for the installation of utilities across a busy highway?

What materials are used for sanitary sewer construction? For water mains? For storm sewers? For manholes?

What method is used to control flowing river water during Dam construction?

What document must be submitted by a contractor for approval prior to the commencement of construction work on an active roadway?

Who is responsible for the layout of a highway?

Answer 1

ANSWER TO FIRST QUESTION:-

Advantages of precast structural members:-

1.Quality control can be done very efficiently. As the members are made in factories quality of every constituent of a structural member can be ensured precisely.

2. Save construction time. Precasting of structural elements can be done simultaneously with other works on site which saves time. No waiting required for curing.

3. Prestressed members can be are precast structures.

4. Ecnomic. Prescast structures are cost effective as very judicious control of material usage can be ensured. It also reduces formwork on site.

5.Aesthetics : Precast structures are made in factories, which ensures smooth finishing. Precast members can be made in any shape with precision .

6. Precast concrete can be made in any weather , unlike cast in situ structures.

7. Prescast structures generally have good fire resistant, noise proofing etc.

Disadvantages of Precast structural elements:-

1. Transportation of large precast structures will cause problems.

2. They are difficult to handle due to its huge weights and sizes.

3. Connection of precast me ers is difficult.

4. Special arrangements( cranes and super towers ) are required to install precast members.

5. Very skilled workmanship required