How to calculate bricks and cement quantity for brickwork?

How to calculate bricks and cement quantity for brick work?

For rate analysis and cost estimation purposes. calculation of quantity of nos of bricks and cement is generally required as per size of available bricks, ratio of mortar that will be used and workmanship factors.
This video helps you to calculate nos of brick, quantity of mortar, quantity of cement and quantity of sand for one cum of brick work.

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How to Calculate Steel Weight by Formula?

In construction field, steel formulas are commonly used to calculate steel quantity for estimation and also for billing purposes. So, it is important for all civil engineers specially quantity surveyors to know how to calculate steel weight by formulas?

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What is Caisson Foundation?

What is Caisson Foundation?

Caisson are the structures that made up of wood, steel or reinforced concrete built above the ground level and then sunken into the ground.

Caisson foundation is most often used in the construction of bridge piers & other structures that require foundation beneath rivers & other bodies of water. This is because caissons can be floated to the job site and sunk into place.
There are several types of caisson foundation.
* Box Caissons
* Excavated Caissons
* Floating Caissons
* Open Caissons
* Pneumatic Caissons
* Compressed Air Caissons
* Monolithic Caissons
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What is Plinth Beam?

Plinth is the beam constructed at plinth level to take the load of masonry wall and protect it from cracks. It devides the load of wall to the foundations evenly.
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What is the diff between bridge and culvert?

A culvert is a small structure of span less than 6m constructed over small water channels or obstructions to provide the transportation route.
While, bridge is a large structure that is constructed above river, lake or road or railway to provide the transportation route. A bridge span can between 6m to 120m.

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At ultimate stage, why NA moves upward in concrete beam?

Why N.A. moves upward at ultimate stage in concrete beam?

Today, i started the series of questions ans answers related to design of concrete structures. I hope, you will enjoy these videos.
Following questions are included in this video
1- What is the min nos of steel bars provided in rectangular, circular and octagonal columns and what is the min diameter of steel bars should be used for columns?
2- How piles transfers the load to the soil and what are the types of it?
3- What assumption are taken for retained earth during the design of retaining wall?
4- What is drop panel and why it is provided?
5- What is the purpose of shear reinforcement in concrete beam and why it is provided?
6- For design purpose, how the depth and width of concrete beam is assumed?
7- What are the difference between under-reinforced beam, balanced beam and over reinforced beam?
8- At what section of concrete beam, chances of shear failure is dominant?
9- What is creep of concrete and what are the factors effecting the concrete creep?
10- Why thermal stresses produced in concrete and how they can be prevented?
11- What is the difference between singly reinforced beam and doubly reinforced beam?
12- Why neutral axis moves upward in concrete beam at ultimate stage?

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How RCC Beam is designed by ACI Code?

RCC of beam involves the calculation of beam size like width and depth and steel reinforcement. Also, we also check the deflection limit and serviceability limit.

We should have following information before design the RCC beam
* Load, Span, shear force diagram and bending moment diagram
* Concrete strength, steel strength and young modulus of steel
* Architectural depth if available.

During design we calculate the size of beam (width and depth) and steel reinforcement. After that deflection and serviceability limit checks are applied. At final step, we prepare the detailing and bar-bending schedule.

There are two methods to start the procedure
1- Assuming the size of beam and find the steel ratio
2- Assuming steel ratio and then calculate the size of beam

When we have the depth of beam, we will check it against deflection, strength and architectural depth.
After the finalization of depth of beam, we find the steel reinforcement and prepare the detailing and barbending schedule.

What is development length?

Development length is the minimum length of steel reinforcement required to be em-banded in concrete in order to achieve the desire bond strength concrete and steel.
Lesser development length may cause
* steel will no yield before the crushing of concrete
* slippage of joints
* cracks at different section specially at joints
Generally, in practice 41d is used to calculate the required development length.