Table of Contents
- 1 How do you check for reinforcement?
- 2 What is reinforcement cage?
- 3 What are the test required for steel reinforcement?
- 4 What is a cage in construction?
- 5 What do you think is the reason why we need to put reinforcement steel in concrete?
- 6 What is a pre-concrete check for reinforcement?
- 7 How much concrete reinforcement do I need for my project?
How do you check for reinforcement?
Steps are:
- Ensure drawings are approved and you have bar bending schedule.
- Check all reinforcement you have recieved is as per BBS.
- Check installed reinforcements for numbers, diameter, bending radius.
- Check cover.
- Check tieing if rebar is done with soft annealed wire.
What is reinforcement cage?
Reinforcing cages provide the structure with stiffness, allowing withstanding tension, bending, torque loads. Reinforcing cages are irreplaceable during production of reinforced concrete plates, reinforced walls, road building and in many other situations.
What are the specifications for cover to reinforcement?
The minimum required cover thickness for slab reinforcement usually ranges between 20 and 30 mm depending on the environmental conditions present throughout the building’s service life. The 20 mm would apply to a dry climate and the 30 mm to a seaside location.
What is the necessity of providing reinforcement in concrete?
Reinforcement for concrete is provided by embedding deformed steel bars or welded wire fabric within freshly made concrete at the time of casting. The purpose of reinforcement is to provide additional strength for concrete where it is needed.
What are the test required for steel reinforcement?
Tensile Test: This tensile test process is one of the important tests of the steel bars. A tension test of steel materials is a damaging procedure that gives data about the elasticity, tensile strength and yield strength of the sample.
What is a cage in construction?
A type of construction, usually for high buildings, in which the loads and stresses are transmitted to the foundations by a steel framework of beams and columns; the walls are supported by the framework.
What are the field test on cement?
What are the Field Tests of Cement?
- Adulteration Test: Take a pinch of cement and feel (rub) between the fingers, It should give a smooth feeling and not a gritty feeling.
- Colour of cement:
- Float test:
- Presence of lumps:
- Temperature test:
- Date of packing :
- Setting time:
- Strength test:
Why do we need cover for reinforcement?
Concrete covering is provided to prevent corrosion of reinforcement bar in RCC. Reinforcement is prone to fire and corrosion due to atmospheric conditions. Hence, a proper covering is necessary in order to overcome such problems.
What do you think is the reason why we need to put reinforcement steel in concrete?
Concrete is only strong against forces of compression and has low tensile strength and ductility. Reinforcement materials are needed to withstand shear and tensile forces on the concrete. Steel is used because it bonds well with concrete and expands and contracts due to temperature at similar rates.
What is a pre-concrete check for reinforcement?
The pre-concrete check for reinforcement essentially comes in two parts. The first part is a visual inspection by the clerk of works or equivalent. Using a steel tape, cover thickness will be checked and any spacers that have fallen off or been broken will need to be replaced.
What is a rereinforcement cage?
Reinforcement cage is one of the most common features on construction projects. However, the assessment of their temporary stability during lifting and prior to concreting has limited guidance and is most commonly dealt with by custom and practice. They have been known to collapse and cause both death and injury.
What are the requirements of reinforcement cage?
The reinforcement cage shall include: formwork for recesses or tubes for anchors, services,…; In the case of welding, only electric welding is permitted, provided that the steel quality is suitable. Tack welding is permitted for all types of steel for assembly purposes, provided that the mechanical properties of the bars are not affected.
How much concrete reinforcement do I need for my project?
The required amount of cover will always be specified on the design drawings, but no time should the cover be less than the maximum size of aggregate plus 5mm. The pre-concrete check for reinforcement essentially comes in two parts. The first part is a visual inspection by the clerk of works or equivalent.