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suraj
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PostPosted: Wed Jul 21, 2021 11:32 am    Post subject: Field Engineering Building+General+Soil+Quality++Cement Based Nonshrink Grouting to Foundation Bases using Masterflow Reply with quote

External Works & Utilities-Chapter 7+Quality+Cement Based Nonshrink  Grouting to Foundation Bases
     using Masterflow  928 t     
MS19
Cement Based Nonshrink  Grouting to Foundation Bases
     using Masterflow  928 t     
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Objective of this statement is to propose procedures to be adopted to grout base plates of stationary equipment/vessels foundation bases, using cement based non shrink grout material for a grouting thickness of 25-50 mm.
2     Grouting to be carried out, between plates bottom & top of foundation bases

Reference Documents
1     Specification

Safety & Responsibilities     
Refer to safety general description on page 1 & in addition
1     Area to be worked in shall be closed for general movement, except those involved with working there and be opened only, when work has properly been completed.

Method (sketch # 26 indicatively)
1     Surface of foundation under base plate or equipment to be grouted shall be chipped/scabbled & brushed to remove weak upper layer of concrete, damaged concrete  and all oil soaked concrete areas, without using mechanical bush hammer
2     Prior to grouting, loose concrete or dust shall be removed by compressed air.
3     Concrete surface shall be soaked with clean water for 24 hours, prior to grouting to minimize localized absorption, as well as, to assist free flow of grout.
4     Just prior to grouting, all standing water shall be removed, leaving only a damp film.
5     Base plates shall be clean and free of oil, grease, paint and correctly aligned according  to meeting details, shown on drawings.
6     Leveling plates shall be set to proper elevation.
7     Base plates and equipment bases shall be uniformly supported, in order to eliminate sag and distortion.
8     Equipment bases shall be leveled using, both anchor bolts and jackscrews.
9     Stainless steel shims 50x50x10 mm thick shall be placed at correct locations, covered with mortar, so as to allow at least 50 mm grout cover on shim sides.
10     Forms, as shown on attached sketch shall be erected on required locations with chamfers.
11     An electric drill fitted with a paddle shall be used for grout mixing purpose.
12     Water @ 3.5 to 4.5 litres per 25 kg bag of Master flow 928 shall be used, according to requirement.
13     Mixer shall be cleaned left with no standing water.
14     90 % of measured quantity of water required to achieve desired consistency, according to batch volume, shall be added to mixer, prior to adding Masterflow grout material, which material has to be added into mixer gradually and remaining 10 % required water quantity to be poured during mixing, which has to be kept working on for at least 3 to 5 minutes, until a uniform lump free grout consistency is achieved.
15     Grouting material shall be poured continuously using  ‘grout pour cone’ with a constant hydrostatic head of at least 15 cm
16     Grouting shall extend to edge of concrete surface, where it is to be finished with a 25 mm chamfer
17     After pouring Masterflow 928 in place,  all exposed  grout shall be covered with  clean dampen/saturated Hessian  and  kept moist, until applied  grout gets firm enough to receive a curing membrane
18     Temperature less than 32 degree  C shall be maintained  for 3 post pour continuous days

Major Equipment
1     Peddle Mixer
2     Grout Flow Cone

Attachment
1     Sketch
2     Masterflow Catalogue
3     Masterflow Method Statement



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1-Method Statement Sketch26-FoundGrout.pdf
 Description:
Grouting between base plate & Foundation

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suraj
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PostPosted: Wed Jul 21, 2021 11:41 am    Post subject: Field Engineering Building+General+Quality+Epoxy Grouting to Vibrating Installation Bases Using Masterflow 648 cp to G Reply with quote

External Works & Utilities-Chapter 7+Quality+Epoxy  Grouting to Vibrating Installation Bases Using Masterflow  648 cp to General Foundations
MS20
Epoxy  Grouting to Vibrating Installation Bases Using Masterflow  648 cp to General Foundations
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Objective of this statement is to propose procedures to be adopted to grout base plates of vibratory installations, using epoxy grout material for varying grouting thickness for normal thickness range.
2     Grouting to be carried out, between plates bottom & top of foundation bases
     
Reference Documents
1     Specification

Safety & Responsibilities     
Refer to safety general description on page 1 & in addition
1     Area to be worked in shall be closed for general movement, except those involved with working there and be opened only, when work has properly been completed.

Method (sketch # 26/60 indicatively)
1     Thin section- A gap, between a base plate and substrate below 25 mm
2     Thick section- A gap, between a base plate and substrate above 80mm
3     Normal thickness- In between thin and thick sections, being 25 to 80mm     
4     Refer to MBT clarification attached
5     Following activities are involved for normal thickness
Surface preparation
1     Metal parts that should not be bonded to grout like jack screws of reciprocating machinery and part of foundation bolts shall be sealed with tape, prior to grouting.
2     Base plates and equipment bases shall be uniformly supported in order to eliminate sag, distortion and leveled, using both anchor bolts and jackscrews.
3     Stainless steel shims 50x50x10 mm thick shall be placed in correct locations, covered with mortar, so as to allow at least 50 mm grout cover on shim sides.
4     Full extent of foundation surface under base plate or equipment to be grouted shall be chipped/scabbled & brushed clean to remove weak upper layer of  concrete and also, chipped all oil soaked concrete areas, prior to installation of base plate
5     Base plate surfaces in contact with epoxy grout shall be grit blasted, so as to expose white metal
6     All surfaces and bolt pockets to receive grout must be clean & free of rust, oil, dirt, paint and residual curing compound
7     All base plate holding down bolts etc. must be free of rust, oil, dirt or contaminants that could impair bond

Formwork
1     Unless otherwise shown on design drawing, entire area under base plate shall be grouted for which, forms fixed around plate, keeping a minimum 25 mm clearance from plate edges and at least, 50 mm from edge of pouring side, so that total grout able area is equal to underside of plate, plus clearance around plate.
2     Before formwork is fixed, it shall be ensured that foundation area to be grouted and bolts holes are clean
3     A liquid tight formwork as practicable, shall be fixed around base plate to prevent leakage of resin, keeping top of forms 25mm above underside of base plate
4     A chamfer 25mm x 25mm shall be provided on sides, so that top of chamfer and top of grout, are in one level in case, whole foundation area around plate is to be grouted
5     A 45 degree sloping surface above form on pouring side shall be constructed  to create a pressure head to enable grout material flow to cover full width of pour
6     A coating of an approved release agent shall be applied to formwork
7     Civil Contractor QC inspection shall be conducted to ascertain adequacy, respecting form profile and general preparatory works

Grouting application
1     All dirt and debris shall be removed from formwork, using compressed air
2     Sufficient Grout material to completely fill prepared area in a continuous process shall be made available
3     Mixing equipment shall be demonstrated to be in a suitable, as well as, in good working condition
4     A standby equipment shall also, be made available  
5     Concrete surfaces to be grouted shall be required to be completely dry, before grouting

Mixing
1     Grout Material Base and reactor components shall be poured into a suitable mixing vessel and mixing carried out for 1 minute or until time, successfully blended occurs
2     All required quantity of aggregate shall be added to mixing vessel, which is to be kept turning and mixing continued, until a uniform lump free grout material consistency is achieved.
3     Over mixing shall be avoided to prevent air entrainment

Placing
1     All bolt pockets shall be filled with grout, prior to pouring rest of under plate space, as a separate operation to prevent voids formation
2     Pouring of grout shall start from one end of base plate and continued, until material reaches far side.
3     Mixed grout shall be steadily poured down, provided formwork slope to avoid air entrapment
4     Pouring shall be carried out only from one side of base plate to avoid creation of voids and possible reduction of effective bearing area
5     When grout reaches far side of formwork, which shall be ensured by poured material rising above bottom of base plate, pouring location has to move along length of base plate, keeping process continued, until whole area is completed.
6     Civil Contractor QC inspection shall be conducted throughout above operations to ascertain proper implementation of procedures in line/according to manufacturer’s instructions
7     Shoulders- Exposed surfaces shall be brushed with Solvent # 2 just before or as grout gels

Curing
1     No curing is required

Major Equipment
1     Peddle Mixer/Mixing Vessel

Attachment
1     Sketches
2     Masterflow 648 CP datasheet
3     MBT Method statement



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1-Method Statement Sketch60-CompFound.pdf
 Description:
Foundation Tabletop

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1-Method Statement Sketch26-FoundGrout.pdf
 Description:
Epoxy Grouting

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suraj
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PostPosted: Wed Jul 21, 2021 11:52 am    Post subject: Field Engineering Building+General+Soil+Quality+Kerbs & Interlocking Blocks Paving around Buildings Reply with quote

External Works & Utilities-Chapter 7+Quality+Kerbs & Interlocking Blocks Paving around Buildings
MS21
Kerbs & Interlocking Blocks Paving around Buildings
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Objective of this statement is to propose procedures to be adopted to lay Kerb stones and  concrete Interlocking blocks on paving  around buildings

Reference Documents
1     Specification  
2     MAR  

Safety & Responsibilities     
1     Refer to safety general description on page 1 & in addition
2     Area to be worked in shall be closed for general movement, except those involved with working there and be opened only, when work has properly been completed.

Material
1     Kerb stones, Interlocking Paving blocks 49N/mm^2

Method (sketch # 56/57/57a/57b/57c indicatively)
All loose soil shall be cleared, formation level made up and well compacted
(Laying Kerbstones)
1     Setting out kerb excavation lines, according to drawing
2     Excavation up to formation level i.e. 325mm from kerb top level
3     Formwork fixing and pouring grade 20 concrete,  200mm wide and 100 mm thick
4     Bedding in cement mortar 1 :4, 25mm thick  for Kerb stones
5     Fixing kerb on mortar to true lines and levels, with chamfer facing towards pavement, followed up by jointing with mortar
6     Placing haunch back concrete grade 20, 150 mm high in triangular section
7     Filling above haunch portion with soil
8     Civil Contractor QC inspection shall be conducted for kerb laying approval and ITP signed off

(Laying Paving Interlocking blocks)
1     Thickness of interlocking blocks, being 60mm for pedestrians use & 80mm for traffic
2     Thickness of sand bedding, being 50mm
3     Top level of sand in joint from kerb top level 50mm
4     Sharp sand to be consumed shall be piled up along area to be paved and  evenly, spread with blocks, laid over snugly to agreed pattern and colour
5     Plank runs shall be used to allow wheel barrows to move on them, to avoid level disturbance
6     Interlocking Blocks shall be laid in full, but at edges of obstacles, such as inspection covers, where cut blocks may be required, whole blocks shall be laid first, wherever possible and trimmable blocks exactly marked & cut, using electric cutter to required size.
7     After sufficient blocks have been laid, sand bedding shall be compacted/carried out, using a plate vibrator pressing blocks to required level in 2 passes, covering entire area with each pass to make bedding even
8     Sand shall be spread on surface of blocks with 2 more vibrator passes applied & brushed under leading edge of vibrator to allow joints vibrated
9     A Civil Contractor QC inspection shall be conducted to approve paving

Major Equipment
1     Plate Compactor

Attachment
1     Sections & Working Drawings
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PostPosted: Thu Jul 22, 2021 1:15 am    Post subject: Field Engineering Building+General+Soil+Quality+SHE Reply with quote

22.07.2021-Civil Field Engineering + Quality AnnexSL + COVID-19 + HSE Engineers Role + Designs + Construction + Methods + Contracts + Organisations + Communication + Coordination + Why be behind Quality of Concrete Standard Material? Talk 429
https://www.facebook.com/100000185425294/videos/551517335980975
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suraj
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PostPosted: Thu Jul 22, 2021 10:36 am    Post subject: Field Engineering Building+General+Quality+Erection of Steel Structures (higher levels) Reply with quote

External Works & Utilities-Chapter 7+Quality+Erection of Steel Structures (higher levels)
MS22
Erection of Steel Structures (higher levels)
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Purpose of this Statement is to define sequence and method that shall be implemented for erection of steel structures.

Reference Documents
1     Specification       Grouting
2     Specification       Steel Structure Fabrication
3     Specification       Painting
4     Specification       Galvanizing
5     Specification       Structural Steel Erection
6     ANSI A 10.13     Safety Requirements for Steel
7     Relevant IFC Drawings
8     Method Statement Structural Steel

Definitions
1     EF          Erection Foreman

Responsibilities
1     CM shall plan and resource steel structure erection activities to ensure that these are implemented, according to this procedure, using consistent/correct equipment resources.
2     CS shall ensure that all safety requirements are implemented and explained to erection workforce.
3     CS shall control day to day activities.
4     EF shall control workforce, ensuring full implementation of this method statement, including providing all safety measures.

Safety & Responsibilities     
Refer to safety general description on page 1 & in addition & specifically,
Area to be worked in shall be closed for general movement, except those personnel involved with working there at locations and involved area be opened only, when erection has properly been completed.
Main safety related items/activities to be implemented are:
a     Safe access to elevated levels
b     Man baskets
c     Full body harness
d     All PP Equipment
e     Extra Harness Lanyard
f     Stay ropes
g     Life Line

Method
Material Receivables
1     All structural steel material to be used for permanent works shall be received on site and checked against relevant documents.
2     All members shall be checked for quantity, identification and transportation damage should it have been caused. In case certain damage has been cause, reinstatement shall be done, before further work proceeds

Concrete Foundations
1     Surface of concrete foundation shall be prepared in accordance with specification provisions to receive grout.
2     All concrete foundations on which, steel structures require to be erected shall be released by QC department, upon completion of civil activity.
3     No work respecting concrete foundations shall be carried out during time, when erections activities remain ongoing within concerned area, so as to avoid every possible damage to structural steel members.

Method Briefing
1     Structures erected to date were low levels located varying from 6m to 16m and access was easy.
2     Now, current structures to be erected would be located at levels from 12m to 33m making access risky & all risks would be taken care of.
3     All required structural steel materials shall be transported from main yard/store to site location, using flat bed trailer.
4     Working area during all these activities shall be cordoned off
5     All framing members shall be sorted out for an easy accessibility & hoisting in certain defined sequence, so that assembly be done conveniently.
6     All main columns/or grid frames shall be assembled on ground, near / adjacent to relevant foundations.
7     Assembly shall then be raised & installed on columns foundations, using appropriate capacity mobile crane.
8     Stay ropes shall be used to secure assemblies, until connecting horizontal members/beams are installed.
9     All splice plates shall be installed and bolted down, before horizontal members are connected.
10     Steel Catcher crew with necessary full body harness/lanyard shall be deployed/engaged in position on beams, using either a man lift or man basket.
11     Full body harness shall secure Steel Catcher to steel members.     
12     Steel Catcher shall move around on steel by ‘Slip & Slide’ method to get in position for next member.
13     Life lines shall also, be pulled between columns, so that steel catchers can walk on beams below with their Safety Harnesses, hooked onto life line.
14     Access ladders shall be installed, as soon as, possible for safe access.
15     Other option shall be open to install step ladders.     
16     All fasteners shall be installed and then line & levels checked.
17     When first level of steel with majority of horizontal members, are installed, line & levels checked, grouting of column base plates shall then be effected, per approved procedure.
18     Mechanical QC inspection shall be conducted for approval

Platform\Handrails\Gratings
1     After completion of main structural steel erection, platform\handrails shall be installed, as required, per drawings.

Major Equipment
1     Mobile cranes/Man lift/Man basket
2     Guy ropes and tensioning equipment
3     Flat bed trailers and forklifts\other mobile shifting equipment
4     Air compressor
5     Impact wrench
6     Welding generators
7     Grinding machines
8     Drilling machines
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suraj
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PostPosted: Thu Jul 22, 2021 10:38 am    Post subject: Field Engineering Building+General+Soil+Quality+Concrete paving Reply with quote

External Works & Utilities-Chapter 7+Quality+Concrete paving
MS23
Concrete paving
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Objective of this statement is to propose procedures to be adopted to construct concrete paving on external areas around processing plant

Reference Documents
1     Drawing Road & Paving Details Sheet 1
2     Specification  

Safety & Responsibilities          
Refer to safety general description on page 1 & in addition
1     Area to be paved shall be closed for general movement, except those involved with working there and be opened only, when paving has properly been completed.

Material
1     Fiber Concrete grade 30, Joint filler board, Crack Inducer, Welded Wire Fabric, Oil resistant joint sealant

Method
1     All relevant underground/infrastructural services shall be laid & approved in all respects, prior to commencement of pavement work
2     Area to be paved shall be made ready by clearing all weak soil & by scarifying prepared surface
3     All portions of backfilled over services & other involved areas shall be compacted to specification requirements, following FDD/testing.
4     Weed killer chemical shall be applied to soil to prevent organic growth
5     On ‘compacted filled area’ to be paved, polythene sheet 0.25mm shall be placed with end overlaps at least 150mm at all joints & intersections
6     Approved subbase material 150mm thick shall be filled up to bottom of concrete slab, following profile given on drawing and compacted to 95 % FDD dry proctor density
7     Whole area shall be divided into parts to suit services & contraction joints formations, as shown on drawings
8     End forms shall be fixed  on  proposed sides, allowing a provision to place 20 dia. MS dowel bars 650mm long @ 300mm centres,  half applied with 2 coats bitumastic paint provided with 100mm long cardboard cap, containing compressible material, such as cotton waste at expansion joint to details shown on drawing, which indicates thickness of expansion joint to be 20mm, refer to detail.
9     At contraction joints, 25x25 mm plastic crack inducer shall be provided, as shown  on detail & joints cut for a depth of 20mm with a concrete cutting machine
10     Welded wire fabric mesh dia. 7mm 200# shall be placed in bay, centrally located in concrete section with concrete spacers below
11     Forms shall  be set to correct levels,  so that total thickness of concrete is achieved, as specified on drawings, followed by compressed air cleaning of all areas to be ready for pour
12     Civil Contractor QC inspection shall be conducted for pour approval
13     Concrete shall be poured in one layer to correct levels & compacted, using parker/ pocker/vibrator, followed by giving brush finish.
14     Curing compound shall be spread on paved surface for immediate effective curing, covered with polythene sheet and later within 2 hours, damp hessian cloth added by removing polythene sheet temporarily and recovered with polythene white sheets thereafter
15     Expansion joints between two adjacent slabs shall be filled with an elastic joint filler & sealed with a chemical resistant sealant, complying with details, shown on drawings Refer to details.
16     Details A  shows 20mm x 25 mm joint seal and detail B shows 15mm x 20mm  slightly rounded  to prevent damage to edges
17     Civil Contractor QC inspection shall be conducted for approval of item.
18     After works is over & curing days finished, area shall be open to pedestrians.

Major Equipment
1     Concrete Pump, Transit Mixer, Parker/Dr Kewande Vibrator, Concrete cutting machine



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PostPosted: Thu Jul 22, 2021 11:10 am    Post subject: Field Engineering Building+General+Soil+Quality+Concrete Placement Reply with quote

External Works & Utilities-Chapter 7+Quality+Concrete Placement
MS24
Concrete Placement
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Purpose of this method statement, is to define procedure that shall be commonly adopted for placing Structural Concrete upon brown field project onto varying type of members, located all over proposed site including, heavy/light foundations, building components & all others internal as well as, external works.

Reference documents
1     Project Specifications
2     National Specifications, if applicable
3     Specifications ACI 301 chapter 8

Safety & Responsibilities     
1     Refer to Safety General Description on page 1

Method
1     Structure that is scheduled to be concreted shall be inspected and approved as acceptable for concrete pouring by both Civil Contractor and EPC Contractor/Engineer.
2     Permission to place concrete shall be authorized by EPC Contractor
3     Concrete Foreman shall ensure that all adequate equipment & resources including standby, (vibrating pokers, compressors, hoses, steel fixer, carpenter, stop ends, water etc. whatsoever), are available at location of concrete placement.
4     When major massive concrete pour is scheduled, a specifically designed pouring plan shall be issued by Project Engineer or Construction Manager, defining various sequences, which plan should be available with Concrete Foreman for implementation.
5     This plan shall help easy & successful pouring, giving location of concrete pump, transit mixers arriving frequency, location of transit mixers during site sample testing, sequences of concrete placing or laying, either in layers in full or in stepping whatever method agreed on plan, so as to avoid formation of cold joints, duration of pours, available strength, respecting all classes of workers, curing arrangements, emergency solutions & other technicalities to be implemented, such as, concrete temperature controls & monitoring thermal gradients etc.
6     When site laboratory concrete technician or QC has approved each concrete delivery though truck, each such truck shall be diverted to concrete raising location & concrete placement activity shall commence.
7     Refer to Method statement, Testing of Fresh Concrete for further details.
a     Concrete shall be discharged by one of two methods. For pours greater than two cubic meters in volume, concrete shall be discharged through a concrete pump or a mobile crane may be used.
b     For pours less than two cubic meters, concrete can be discharged direct from truck mixer to location, using a direct site fabricated chute, after concrete is delivered to site location chute from transit mixer chute or a mobile crane may be used.
8     Regardless of method of discharge, no concrete shall be dropped from a height greater than two meters or in a manner that causes segregation of aggregates.
9     Immediately, prior to placement of concrete activities commence, reinforcement & formwork within concrete pour shall be sprayed with clean water, which would prevent concrete from adverse impact of flash setting during high temperature environment.
10     Placement of fresh concrete within shutters shall be done in a logical sequence, which sequence should be agreed, prior to commencing pour.
11     Concrete shall be placed at locations that do not exceed 1.5 meters from final location of concrete.
12     Maximum concrete layer thickness of 400 mm shall be observed, so that nozzle of pocker/vibrator interlocks lower poured layer, while vibrating current concrete layer.
13     Fresh concrete shall be compacted with pokers of sufficient size and number.
14     Oscillation of vibrator/pocker in no case, shall be less that 10000 per minute but, could be considered better, when it be more than 10000 oscillations.
15     Compaction of fresh concrete shall commence, when placement of concrete quantity is adequate, so that uncontrolled segregation does not occur.
16     Concrete shall be placed in a sequence that ensures that cold joints are eliminated, as explained in foregoing.
17     Each subsequent layer of concrete shall be adequately, compacted into concrete layer below, as explained in foregoing.
18     Where en cast plates, holding down bolts or some other critical embedded items are included within pour, surveyor shall check locations and elevation of all such items, when concrete placement has not been completed.
19     All such embedment or inserts shall be inspected during pre pour approval inspections.
20     Records respecting pre & post pour of all such inserts shall be made for references to verify locations, confirmed within permissible limits of tolerance.
21     When major pour for massive blocks is conducted, necessary thermocouples shall be installed to monitor development of thermal gradient within concrete massive block itself, so that temperature difference existing, between internal portion of massive block & exterior surfaces be known & be within acceptable limits
22     Immediately, after laid concrete finishing has been completed, it shall be covered with white polythene sheeting, ensuring that edges are sealed to prevent circulation of air.
23     If member poured requires powerful thermal curing, thermal curing arrangements shall be made in agreed manner, so that no heat developed within massive concrete is released, but that thermal heat must remains within block itself for at least 72 hours
24     And in conventional curing arrangement, upon adequate setting of concrete, white polythene sheeting shall be removed temporarily.
25     Hessian cloth, which has been soaked in water, shall be placed over set concrete.
26     White polythene sheeting shall be replaced and sealed at edges immediately.
27     Hessian cloth shall be kept moist for a period of 14 days or as specified within specifications.
28     Immediately, after laid concrete is ready to receive curing compound, it may also, be sprayed, if permissible by specifications.
29     Such provision shall prevent hair crack formation that can be a result of shrinkage of concrete.
30     In that case, immediate cover by white polythene sheet shall not be required, but, later on concrete would be covered as such, for continuous curing for defined number of days.
31     When shuttering is removed from an element, exposed concrete surface shall be inspected.
32     Where a defect is observed, defect shall be classified, as either minor or major.
33     A minor defect is one, which does not impair strength of structure or is less than or around 10mm by 10mm size only, which defect should be repaired, using a chemical patching mortar.
34     A major defect shall be brought to attention of QC department for investigation & resolution.
35     A major defect shall be other surface defect that is larger than 10mm by 10mm in size.
36     Method for repair of such defects shall be discussed and agreed with Engineer/EPC Contractor.
37     Repairs to concrete surfaces shall be cured, according to meeting requirement for fresh concrete.
38     Whatever defects are noticed post removal of forms, no defects shall be repaired, without reaching certain agreed procedures with QC & Engineer
39     And in case, certain chemical compounds are required to be installed for repairs, manufacturer’s instructions shall be complied with
40     All repaired areas shall be inspected, approved & recorded
41     All pre & post concrete records shall be surveyed, recorded & approved for permanent use, in particular, where deviations in horizontal & vertical controls are observed

Equipment
1     Truck Mixer/Concrete Pump/Vibrating Pokers/Compressors
Attachment
1     ITP # Concrete Placement
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suraj
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Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Fri Jul 23, 2021 1:32 am    Post subject: Field Engineering Building+General+Soil+FIDICSilver-Quality+SHE Reply with quote

23.07.2021-Civil Field Engineering + Quality AnnexSL + COVID-19 + HSE Engineers Role + Designs + Construction + Methods + Contracts + Organisations + Communication + Coordination + Why be behind Quality of Concrete Standard Material? Talk 430
https://www.facebook.com/100000185425294/videos/545704663296967
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suraj
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Joined: 17 Apr 2008
Posts: 2886
Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk

PostPosted: Fri Jul 23, 2021 9:52 am    Post subject: Field Engineering Building+General+Soil+FIDICSilver-Quality++Pre Cast RCC Covers for & Instrumentation Trenches Reply with quote

External Works & Utilities-Chapter 7+Quality+Pre Cast RCC Covers for & Instrumentation Trenches
MS25
Pre Cast RCC Covers for & Instrumentation Trenches
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Objective of this statement is to propose procedures to be adopted to carry out construction of RCC covers for covering sand filled Instrumentation and Electrical Cable Trenches.

Reference documents
1     Drawing #s not included
2     Specifications concrete related

Safety & Responsibilities          
Refer to safety general description on page 1 & in addition
1     Safety measures, respecting handling these heavy covers shall be considered for hoisting to trailer, transporting & offloading to locations.
2     Since, covers are designed for varying dimensions, maximum weight in line to biggest dimensioned cover shall be considered to select type & capacity of mobile crane, with all precautions, resorted to during crane operations, such as third party certification, location of stationing, using banksman, while crane swings & hoists.

Materials
1     Coloured concrete Grade 30
2     Red colour concrete for covers to be used on Electric Cable Trenches
3     Green colour concrete for covers to be used on Instrumentation Cable Trenches
4     Red or Green oxides to be added to concrete @ 9 kg per cum     
5     Lifting Lugs, 16mm dia. with exposed portion galvanized, to be fixed flush with concrete
6     Prefabricated mesh 7mm dia. or equivalent description at 200/200 mm c/c

Method (sketch # 10 indicatively)
1     Since various dimensions are involved for these typical precast concrete covers, details of lifting lugs with exposed steel portion of lug to be galvanized, have been given on attachment.
2     Relevant details 5 L & 5 H on above drawing indicate transverse joints to be formed at a spacing of 3m in case of 150mm thick covers and 1 m in case of 50 mm (proposed to be substituted by 100 mm) covers
3     Pre casting shall be carried out in precast yard to approved procedures, using coloured concrete
4     All other procedures, pertaining to concreting & transporting members to site locations shall be similar to, as being adopted & purposely expressed on previous concrete related methods
5     Curing shall be carried out per methods requirements
6     Prior to placing covers on locations, sand filled compacted leveled profiled base to requirements in trench shall be prepared and polythene sheet spread to receive covers.
7     Covers shall be transported to site locations, per requirements & preparations for installation be conducted
8     Covers shall be offloaded to locations at specified spacing, leaving a gap of 25 mm, between ends to allow for oil resistant joint sealant
9     Civil Contractor QC inspection shall be conducted to ascertain correct alignment and level

Major Equipment
1     Transit mixer
2     Wheel barrows
3     Mason’s tools in general
4     Trailer
5     Mobile Crane of required capacity

Attachment
1     Sketching showing lifting lugs



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1-Method Statement Sketch10-PrecastCover.pdf
 Description:
Precast Covers

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suraj
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PostPosted: Fri Jul 23, 2021 10:14 am    Post subject: Field Engineering Building+General+Soil+FIDICSilver-Quality+Repair of Single Leaf Swing Gates Reply with quote

External Works & Utilities-Chapter 7+Quality+Repair of Single Leaf Swing Gates
MS26
Repair of Single Leaf Swing Gates
Index
Scope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachments

Scope
1     Objective of this statement is to propose procedures to be adopted to carry out repair to emergency gates to be installed in substation fence for transformers.
2     A lock, usable/function able from outside is to be added to gate.
3     This function was not included with original design.

Reference documents
1     Attached sketch

Safety & Responsibilities          
1     Refer to safety general description on page 1 & in addition, all necessary precautions shall be adhered to, which are required during welding & cutting
2     All precautions shall be adhered to, which are required during breaking concrete & during grouting & applying epoxy paint system

Materials
1     New post
2     Self leveling grout to specification
3     Epoxy paint system or galvafroid

Method
1     Vendor – Link Middle East Ltd or equivalent approved
2     Existing gate post shall be cut, using gas cutting equipment to a level, as shown on sketch and discarded
3     A new post dia. 88.9mm, including a locking lug shall be added with a sleeve, slot by welding at  vendor’s shop with 70 mm out to out PVC coated, per specification.
4     A circumferential overlap shall be made in such a way that a minimum of 100mm overlapping length lies below finished concrete level in addition to whatever available projection remaining above
5     A portion of concrete necessary to allow working area (150 mm deep approximately) to weld circumference on site shall be removed, prior to new post is erected for installation
6     New assembled post shall be properly aligned to meet new requirement
7     Welding shall be carried out to circumference, including reaming of surface tags, if necessary
8     After welding galvafroid or epoxy paint system shall be applied, according to meeting manufacturer’s instructions
9     Civil Contractor QC inspection shall be carried out for approval of welding and paint system
10     Surface of broken concrete shall be cleaned and approved
11     Forms if necessary, shall be prepared and self leveling grout should then be applied to manufacturer’s instructions and finished accordingly

Major Equipment
1     Oxy Acetylene Gas cutting system
2     Welding set

Attachment
1     Sketch showing proposed arrangement
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