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Islamabad (Web Desk): Prime Minister Nawaz Sharif on Tuesday performed ground breaking of Signal Free Corridor of Islamabad Highway here in the evening.

During his speech at launcing ceremony, PM Nawaz said that the project envisages conversion of 24 kilometer Expressway from Zero Point to GT Road Rawat as signal free corridor besides addition of lanes to ease traffic congestion.

It will cost about 21.81 billion rupees.

In the first phase, launched today, four kilometer portion from Zero Point to Faizabad would be completed at a cost of 1.6 billion rupees.

CDA Spokesman Ramzan Sajid informed that the project, costing Rs 21 billion involves the expansion of Expressway to 10 lanes from the Zero Point to Rawat providing the commuters a signal free ride across the 24-kilometer. The project would be executed in three phases. In the first phase, portion of the Expressway between Zero Point and Faizabad interchanges would be widened to 10 lanes. The stretch between Faizabad and the Airport Chowk would be expanded in the second phase and the remaining portion up to Rawat would be catered for in the third phase. The project involves construction of two overhead passages and seven underpasses for an access to housing societies located along the road. Of five lanes on either sides as designed in the project, three would be flexible and the rest two rigid for movement of heavy vehicles.

CDA Spokesman Ramzan Sajid informed that the project, costing Rs 21 billion involves the expansion of Expressway to 10 lanes from the Zero Point to Rawat providing the commuters a signal free ride across the 24-kilometer. The project would be executed in three phases. In the first phase, portion of the Expressway between Zero Point and Faizabad interchanges would be widened to 10 lanes. The stretch between Faizabad and the Airport Chowk would be expanded in the second phase and the remaining portion up to Rawat would be catered for in the third phase. The project involves construction of two overhead passages and seven underpasses for an access to housing societies located along the road. Of five lanes on either sides as designed in the project, three would be flexible and the rest two rigid for movement of heavy vehicles.

The prime minister said that apart from construction of highways, motorways and metro bus projects, the government has also initiated a number of projects to overcome the electricity shortage.
Nawaz Sharif said that 3,600 megawatts electricity would be generated through theliquefied natural gas (LNG) for which the government has allocated billions of rupees in the Public Sector Development Programme (PSDP).

Sharif said that he has directed the minister for petroleum to implement plans for generation of 1,000 MW of electricity through gas by 2016 so that people get further relief in load-shedding in next summer.

The premier said that 1,400 MW electricity would be added from Tarbela-IV project which is to be completed by 2017. He said that Neelum Jhelum would also provide 960 MW electricity.

National Engineering Services Pakistan (Pvt.) Limited (NESPAK), a leading International Engineering Consultancy requires the services of Engineers/Professionals for its various projects, presently mostly in Sindh/around Karachi area on contract basis:

B.Sc. Civil Engineering preferably M.Sc. having minimum experience of 15 years preferably in Design & Construction Supervision of Highway and Structures.

B.Sc. Civil / Electrical Engineering having minimum experience of 10 years preferably in Highways and Structures.

B.Sc. Civil Engineering having minimum experience of 5 years preferably in Highways and Structures.

B.Sc. Civil Engineering having minimum experience of 10 years preferably in Design & Construction Highways and Structures.

B.Sc. Civil Engineering having minimum experience of 10 years preferably in Highways and Structures.

M.Sc. Geology/B.Sc. Civil Engineering having minimum experience of 10 years preferably in Highways and Structures.

B.Sc. Civil Engineering / M.Sc. Geology having minimum experience of 10 years preferably in piling.

Suitably qualified candidates from HEC recognized universities may apply online. Applications other than online shall not be accepted. The last date of submission is July 08, 2015. Only shortlisted candidates shall be called for interview. No TA/DA shall be admissible

In construction of a mega project there is always insightful sort of technicalities involved which has to be checked / identified technically. The process demands a sound technical engineering judgment and careful observation. Reinforced Cement Concrete, despite of other important checks, needs to be checked for rebar against the provided construction drawings / shop drawings or technical specifications.

It must be kept in mind that the difficulty and cost involved in this activity makes it vulnerable for shortcomings from the contractors end and it needs to be rectified / adjusted by a sound consulting firm deputing on the inspection of execution.

Inspection of Steel Rebar

No doubt it needs experience and also needs know-how of the steel rebar binding process. But here are some of the tips from top peers who are doing this in the field for years :-

a.       Start from the drawings, one must be well aware of how to read a rebar drawing. As drawings is a language for engineers one must know how to communicate with it in the field. Make a habit of reading drawings that will be your first step towards a successful rebar checker.

b.      Always keep a measuring tape with yourself that will help you in checking the spacing as well as the splice length or development length.

c.       Always wear plastic gloves while inspection because holding steel with naked hands will damage the skin of yours badly.

d.      You must be well aware of the physical features of the construction component i.e. if some sort of drainage pipe or electrical conduit is to be installed or water stopper to be placed or any other pipes / embedded item to be placed.

e.      Some important things one must check are the rebar diameter You can use vernier caliper for this purpose, rebar spacing, rebar development length, lap / splice length, alignment or rebar there must be no sag or buckling in the bars, couplers if any must be properly fixed tightened, bars must be properly fixed, bars must not be rusted, clear cover is one very important factor to be checked, no of bars must be counted and must be equal to given in drawings and must not be less or more than 2 bars be placed there.

f.        If you are a new comer try to establish a conversation between contractor’s foreman or site engineer because they will know how these bars are placed but never every show to them that you don’t know much and are here to learn things.

g.       You must be well aware of the steel quality tests like tensile strength check or torsion failure strength or coupler tension strength check etc. You must ensure that the steel being used is from the checked lot and must not be of a failed quality.

h.      No doubt in field a true implementation of the design is very difficult due to harsh field conditions and difficultly in installation / fixing of rebars but never ever compromise with the design as it is a driving factor that can even results in collapse of a building if completely ignored / violated.

i.         One very important factor is the orientation of bars like main rebars are always below the distribution or temperature rebars you can check this from the drawings provided to you.

So we can say that in a nutshell one must be very keen observer and should be well conversant with the design methodology and sound technical knowledge.

Checking of rebars is not difficult neither never testing process so don’t get confused or get upset with your duty enjoy the work and let the structure have its strength as it is designed.


 Degree in “Civil Engineering” in the requisite discipline from a recognized University and Registered as “Professional Engineer” with the Pakistan Engineering Council.
2.         AGE:
25 to 38 + 5 Years = 43 Years for Male Candidates across the board, age relaxation is admissible as prescribed by S&GAD No Notification No. DS (O&M) 5-3 / 2004 / Contract (MF) dated 29-12-2004 on 29-06- 2015.

3.         PAY:                                       BS-17+ (Rs. 40% Special Allowance as admissible to other
                                                            ACE Employees.)              

4.         DOMICILE:                           Punjab.

5.         GENDER:                             Only Male candidates domiciled in any district of Province
                                                            of Punjab.

6.         PLACE OF POSTING:       Anywhere in Punjab Province.

                        One paper MCQ Type Written Test relating to Prescribed  Qualification will be conducted.

Recently while working on a dam project I go through a term called Roller Compacted Concrete. Mostly abbreviated as R.C.C but it must not be confused with Reinforced Cement Concrete. The word is enough to define itself; roller compacted concrete is a relatively stiff concrete mix that is spread with a paving machine and is than compacted with the help of a roller which is usually steel drum vibratory roller. 

Method of construction used for roller compacted concrete is simple and conventional. 
Roller-compacted concrete has the same basic ingredient as conventional concrete: cement, water, and aggregates, such as gravel or crushed stone.

But unlike conventional concrete, it's a drier mix—stiff enough to be compacted by vibratory rollers. Typically, RCC is constructed without joints. It needs neither forms nor finishing, nor does it contain dowels or steel reinforcing.

These characteristics make roller-compacted concrete simple, fast, and economical.
These qualities have taken roller-compacted concrete from specialized applications to mainstream pavement. Today, RCC is used for any type of industrial or heavy-duty pavement. The reason is simple. RCC has the strength and performance of conventional concrete with the economy and simplicity of asphalt. Coupled with long service life and minimal maintenance, RCC's low initial cost adds up to economy and value.

For dam applications, RCC sections are built lift-by-lift in successive horizontal layers resulting in a downstream slope that resembles a concrete staircase. Once a layer is placed, it can immediately support the earth-moving equipment to place the next layer. After RCC is deposited on the lift surface, small dozers typically spread it in one-foot-thick (300mm) layers.

The first RCC dam built in the USA was the Willow Creek Dam on Willow Creek, a tributary in Oregon of the Columbia River. It was constructed by the Army Corps of Engineers between November 1981 and February 1983.

The joints between waterstop are to be formed by heat fusing as per recommendations of the supplier. 

The contraction joints shall be pressure grouted with cement grout no sooner than 3 months after placement of the last lift of concrete at the joint to be grouted and when approved. 
V notch grout groves shall be formed in the contraction joints as indicated on the drawings. 

All pipe and fittings to be embedded in concrete shall be thoroughly cleaned of all dirt, grease, grout and mortar immediately. Before being embedded in the concrete. The pipe and fittings shall be firmly held in position during the placing of concrete. All parts of the grouting system shall be maintained free from water, dirt and other foreign substances. 

The edges of the cover plates adjacent to the concrete face shall be plastered with a stiff cement mortar or other approved material as shown on the drawings. This material shall insure closing of all openings between the plates and the face of the concrete to exclude cement, water and fresh mortar but shall permit opening between plate and concrete under pressure during grouting operations. Any indication of restrictions shall be corrected immediately before continuing the placement of the advancement placement.  

At such times as the engineer may direct, the grout system shall be tested to his satisfaction by forcing a current of air under pressure through it. Any pipe or grout groove that becomes clogged before the grouting of the joint is complete, for any cause, shall be opened or the contractor shall drill such holes, cut the concrete, and install such other pipes and fitting that in the opinion of the engineer will satisfactorily substitute for the blocked portion of the system. 

All grout and vent system headers should be checked and cleared of any obstructions. The compartment to be grouted shall first be checked for water tightness at half the maximum allowable pressure well in advance of start of grouting to avoid delays. Necessary repairs shall be made if leaks are found.

The pipes for grouting shall be color coated to allow easy identification in the field. 
Extra grout pipes shall be installed in order to have redundancy in the system in case one set of pipes get choked. 

All grout for pressure grouting contraction joints shall consist of Portland cement mixed with water in approved proportions. To prevent the grout from setting too quickly, the temperature of water used shall not be above 21 0C. 

The contraction joint shall be flushed with water and water left in the joint prior to grouting. A lean grout starter mix of water cement ratio of 3:1 by volume shall be forced in through the groove at the bottom of the grout lift while the value in the return header at the top of the lift. Pumping will continue until undiluted grout appears at the outlets of the top groove. Both outlet valves will then be closed and the pressure built up slowly until the prescribed maximum is reached. The pressure applied to the bottom of the lift shall be such that the resulting pressure at the top will be approximately but no in excess of 200 KPA. The grout will then be given time to spread out in the joints, during which time the pressure may drop, in the top as directed. This will be repeated until the joints hold the prescribed pressure for 30 minutes and until the grout has set at which time the grouting will be completed. 


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