Free

Engineering and Construction Assignment - Lab Report Example

Comments (0) Cite this document
Summary
1. The type R signifies that the bar used for the link is the Plain Round Bar of Grade 250. The latest British Standards dictate other types which are R type for Ribbed bars of Grade 500 and S for Stainless steel. 2. The cover is provided so that the interaction of the steel with the environment can be reduced and to protect the steel reinforcement from corrosion and rusting…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER92.1% of users find it useful
Engineering and Construction Assignment
Read TextPreview

Extract of sample "Engineering and Construction Assignment"

The type R signifies that the bar used for the link is the Plain Round Bar of Grade 250. The latest British Standards dictate other types which are R type for Ribbed bars of Grade 500 and S for Stainless steel. 2. The cover is provided so that the interaction of the steel with the environment can be reduced and to protect the steel reinforcement from corrosion and rusting. These environments can be any for instance the column of the bridge comes in interaction to the sea/river water which is corrosive and destroys the steel; therefore the strength of the structure is reduced. Secondly the reason for the cover is that it gives a good finished surface which can be painted and decorated easily. 3. 25 H 20 -6-200 B1 is the bar call up code, in this 25 is the bar no, H is the bar type/Class, 20 is the bar diameter, 6 is the earmark on the respective drawing, 200 is the spacing between the bars in mm and lastly B1 is the suffix. 4. The basic philosophy behind the bar shapes is to standardize the bending and shape process, this is done for several reasons, firstly this is done so that the reader or the working person should know what are the angles between the shapes, then what is the total length of the bar as we are well aware that the bending will cause a change in length that is reduced in the bend. Then the designer does so to facilitate the workers and the contractor, because a unusual shape might be very difficult to fabricate and will require additional cost and time. 5. There are several ways to maintain the clear cover in concrete; this normally depends on the type of component we are concreting. The spacer plates/ bars are attached to the reinforcement in between the shuttering and steel. Then another spacer way is to provide the spacer chairs, and lift the mesh of the reinforcement to a desirable height. Another way is to provide plastic sheeting and metal tip spacer chairs. 6. a) coarse aggregate = 122.4 Kg b) fine aggregate = 81.6 Kg c) cement = 40 Kg d) water = 22 Kg 7. At SSD conditions the Water cement ratio of the concrete is (weight of water / weight of cement ) is w/c = 22/40 = 0.55. SSD stands for Saturated Surface Dry , this is a condition of an aggregate in which the aggregate is immersed in water for some time and let it soak as much water as it can, this results into filling of all the pores in the aggregate and then after this the aggregate are dried from the surface so that no additional water remains on the surface. This condition of the aggregate is of vital importance, as we know that dry aggregate soak water so when they are used in directly in concrete they will absorb the water of the concrete which was supposed to be used in the hydration of cement and concrete as whole, eventually we have to increase the water cement ratio, but this ratio is almost impossible to maintain. Where as if the due required water is not provided this will result into lesser ultimate strength and the concrete might have microcracks in it. On the other hand if the saturated aggregates are not surface dried then this will firstly result into increase in water which will decrease the strength of the concrete and secondly there will be a water film that will be developed at the surface of the aggregate and the due bond between the cement and the aggregate will not be developed. 8. The form should be cleaned before the concrete is to be poured. The reason for this primarily is simple but very important in essence. The primary reason is that any unrequired material in the form will be added to the concrete hence disturbing the mix design and eventually disturbing the strength of the concrete. Secondly of the is some material in the formwork and when the concrete is poured this material clings with the surface of the concrete. This will affect in two adverse ways firstly there is chance that the clear cover is breached and the reinforcement might be naked when the alien material is taken off, secondly the due required smooth surface of the concrete will not be acquired, resulting into additional cost on the maintenance and repair. 9. There are few indications that compaction process is complete, firstly that there is no decrease in the height of the concrete, secondly that there is no strong shaking in the concrete and thirdly that the water starts to appear on the surface of the concrete and a water film is formed at the top if the vibration is not stopped at this point there will be segregation in the concrete. 10. The basic mechanism that takes place when the concrete is compacted is that the density of the concrete is increased and as we are well aware that the higher the density higher will be the material presence in the specific shape, hence higher will be the resistance offered to any loading therefore higher will be the strength. Concluding that compaction is directly proportional to strength of the concrete. Then the compaction process eliminates the air voids in the concrete and it is to be noted that the these air voids aids the failure crack propagation and its is seen that the failure planes normally pass through these air voids. Hence in order to reduce the air voids and increase the strength compaction must be done. 11. 15mm is a clear cover that is normally used for ordinary construction, normal environmental conditions and common loading. As we are aware of the fact that the bridges interaction with extraordinary loadings and environmental conditions. As bridges are made on rivers and seas where the temperature variation is very high and these results into excessive freezing and thawing cycles hence the concrete can spall off the surface of the beams making the reinforcement naked. Then the moist and corrosive nature of the air around a bridge results into excessive corrosion of steel reinforcement. Hence the requirement of the cover is more in case of a structure such as a bridge. It is suggested that the cover must be more than 50mm. 12. The procedures for concrete cube making are given in British Standard (BS) 1881:1983 Testing Concrete and the size of the cube forms are 150 x 150 mm and the basic reason for this to standardize the test and the result can be validated. The process is long and there are several points where care if of utmost importance for the validity of the test results. First of the entire cube forms must be cleaned and it should be ensured that surfaces of the cubes are clean. Then the faces of the cube must be oiled so that while extraction of the concrete sample later can be made easily. Then the sample of the concrete must be brought near the cubes and the cubes must be filled with appropriate apparatus such as scoops. Now the concrete is laid into the cube moulds in layers normally three layers and after laying each layer it should be compacted. The general procedure of compaction is hammering by a Rod this is a steel rod of 380 mm length steel bar, weighs 1.8 kg and has a 25 mm square end for ramming. The minimum number of strokes per layer required to produce full compaction will depend upon the workability of the concrete, but at least 35 strokes will be necessary. It must be noted that there will be three no of layers. Then eventually the top surface is planed and evened by using the straight edge or appropriate apparatus. Then a mark is left in the cube sample so that the mould can be retrieved later, this can be done by several ways which include engraving the date and specimen no the sample with a pointed edge or just stick a small page on the concrete with the details on it. Lastly is the curing of the sample, which must be done in a curing tank if the sample is to be immersed in the water fully or it can be done by placing the sample in moist room with a humidity level of more than 95 %. The process of curing will need some time and after which the sample is retrieved and then after drying placed into the compression machine for the test. 13. Depth to reinforcing = d = 280 mm = 0.28 m Beam width = b = 150 mm = 0.15 m Reinforcing steel area = As = 402 mm2 = 4.02 x 10-4(2 no 16 bars) Concrete compressive strength = f'c = 20 MPa Reinforcing yield strength = fy = 500 MPa Calculation of Moment Capacity of the member a. Solve for a using the ?F = 0. As fy = a b ?1 f'c 4.02 x 10-4 (500) = a (0.15)(0.85)(20) a = 0.0788 m =78.8 mm b. Es = Ey = 500 / 200,000 = 0.0025 c. Determine moment from force couple ??Mn = ??Asfy (d - a / 2)??Mn = 0.9(402)(500)(280 – 78.8 / 2) x 10-6 ??Mn = 43.52 kN.m Reaction forces at the support = P/2 + 1.08 kN Max moment = Area under Shear force diagram Max Moment = (P/2 + P/2 +1.08)(1)(0.5) = P/2 +0.56 kN.m Therefore P/2 +0.56 = 43.52 P = 85.92 kN Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Engineering and Construction Assignment Lab Report”, n.d.)
Retrieved from https://studentshare.org/engineering-and-construction/1392952-see-the-attachment
(Engineering and Construction Assignment Lab Report)
https://studentshare.org/engineering-and-construction/1392952-see-the-attachment.
“Engineering and Construction Assignment Lab Report”, n.d. https://studentshare.org/engineering-and-construction/1392952-see-the-attachment.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Engineering and Construction Assignment

An organizational structure of an engineering and construction company

...? Controlling your Building Business Task Introduction Like any other company, all companies need to have an organizational structure to help in running it effectively. For example, a company operates and executes its services and products to its clients. As an engineering and construction company, it has to have a large scope with several employees on board that will befit its aim and objectives. The firm does not act as an engineering and construction company but also a consultancy firm in that area. The company has functional departments, which have fully detailed offices (Ward, 2011). Company Structure •BOD consists of five members. •The chairman will also act as the...
11 Pages(2750 words)Assignment

Engineering and Construction: Video Switcher, logic circuits in electronics

...? Engineering and Construction: Video Switcher, logic circuits in electronics Introduction We will begin our paper with the introductory part, describing assignment, then methodology that was applied, and a real life exmple of the circuit. So, firstly assignment in its most basic characteristics, dedicated to discovering the basic concept of digital electronics, electronic product development cycle, and operation and performance of simple digital systems. Having to design a digital video switcher MUX4T01 IC between four cameras using manual and automatic switching, we must to add that camera number should be displayed on the seven-segment display. Analogically, according to the assignment's conditions,...
10 Pages(2500 words)Assignment

Engineering and Construction: Helmets

...are thermoplastics. The material of construction is not suggested in the patents for: i) it is not an invention done by the construction company, ii) the material had been used in other designs of the lawn mower and other household equipment, iii) the material chosen for the design was subject to change in the future with improvements to the design and that would mean changing the patents with every new choice of material, and iv) the material field is wide such that no claim would have sufficient engineering grounds. Question 3 Figure 5.20b of Block 3 Part 5 shows the phase diagram for the aluminium–silicon alloy system. 1. When heated, at what temperature would an alloy with...
7 Pages(1750 words)Assignment

ENGINEERING AND CONSTRUCTION

... Question One: What Are Radio Transmitters And Different Types Of Radio Transmitters? Radio transmitters are electronic devicesthat produce radio waves through the use of an antenna. These transmitters that are normally found in many other electronic devices generate frequency alternating currents for radios that are in turn applied to the antennas (Elliot, 2011). After the antennas have been excited by these currents, they start radiating radio waves. Transmitters are additionally utilized for the purposes of broadcasting and are vital equipments of communication that utilizes radio technologies (Rider, 2008). This includes equipment like cell phones, Bluetooth along with computer networks that utilize wireless technology... Question One:...
4 Pages(1000 words)Assignment

Assignment: Engineering and Construction The Case of CTV Building

...? Assignment: Engineering and Construction – The Case of CTV Building I.D. of the Assignment: Engineering and Construction – The Case of CTV Building Executive Summary This report is aimed at analysing the incident of CTV Building collapse that caused deaths of several civilians. The report also aims at formulating and organising the most important recommendations for the future course of action in the field of construction safety engineering. The analysis portion of the paper has been divided into to major subsections. In subsection 2.1, personnel management issues primarily with relation to the recruitment process of a building construction team have been analysed. Contextually, it should be mentioned that the credibility... of the...
8 Pages(2000 words)Assignment

Construction Engineering

... CIVE 446 – Construction Engineering Qn The life cycle of a constructed facility refers to the duration, through which the given facility will take – throughout its life cycle. The stages covered under the lifecycle of a constructed facility include the planning stage, the designing stage, project start up, use and operation stage, revitalization or renewal stage and the stage for disposal (Edwards, Bartlett and Dickie 2-7). The duration taken for a constructed facility to get through the different stages, starting with the planning and ending with the disposal stage is the life cycle of the given facility. In the case of many construction facilities, they are designed to give service for a certain number of years – on the minimum... ...
7 Pages(1750 words)Assignment

Construction Engineering

...? CIVE 446: Construction Engineering Quiz Ethics Topics in Construction Industry Construction Industry needs more ethics training that should start at collegiate level. Ethics training focuses on the standards of professional conduct that engineers need to adhere to when practicing their profession. The code of ethics training ensures that particular principles and guidelines govern the day-to-day activities of engineers. As a result, all the stakeholders in a project or construction program are satisfied with the services and products offered by engineers. The essential ethics topics for training in construction industry include; a. The interest of stakeholders: The purpose of the project must meet the demands of the stakeholders... or...
6 Pages(1500 words)Assignment

Applied Principles of Value Management and Engineering

...with high value for the client’s project. This study will be a collaboration of the different stakeholders including department heads and key employees of SBE Innovations and our very own team. They will carry out a workshop to undertake value management and value engineering. The team will conduct functional analysis and provide suggestions, including inputs from the different stakeholders and the people in the field in order to provide the greatest value for the project. Through value management, we can evaluate the different aspects and functions of the construction project. Our objective is to minimise unnecessary costs and see to it that all functions have their important role in the entire...
15 Pages(3750 words)Term Paper

Engineering And Construction Parking Demand

...Engineering and Construction parking demand Problem ment The paper aims at outlining critical guideline and design of a parking lot configuration that properly maximizes parking zones. The plan properly provides a plan for the project which also aims at to do an existing conditions survey, locating the parking lot, buildings and outlined corresponding entry points (Flink et al, 84). The chapel is likely to entail a lot of people entering and exiting and thus spacious feature is highly considered in this case. The sizes of the parked vehicles must be categorized according to the varying natures of sizes and types as favored by the car manufactures’ models. State the Specific Existing Condition The...
8 Pages(2000 words)Assignment

MSc in Civil Engineering and Construction Management

Our client will have an accurate and appraised value for money (VfM). The second part deals on value engineering approach and processes which involve imaginative and creative efforts, and methods and means to provide substitute materials, tools and processes which can give a valuing ‘map’ for the project. SBE Innovations will have a chance to study and approve the recommendations through their representatives, the project manager, and project committee. The team will determine how the functions of the construction can be simplified without sacrificing quality. Value management is the first step and activity that should be applied at the early stage of the project. This is a step-by-step analysis, employing scientific m...
15 Pages(3750 words)Assignment
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Lab Report on topic Engineering and Construction Assignment for FREE!

Contact Us