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Earthwork Excavation in Bangalore

Earthwork Excavation in Bangalore

Like all civil construction works, Earthwork excavation in Bangalore or anywhere plays very important role in construction industry as well as in public life. This earthwork excavation services for buildings under construction, has to be tackled carefully with complete engineering knowledge, field experience, by using suitable equipment and machinery and by reliable professional contractor or agency.

While doing work, taking all safety precautionary measures for people and safety of nearby structures or buildings.

All these above points and even more will be carried out by our company called My Home My Design having an expert team that handle services of earthwork excavation in Bangalore or anywhere by professional earthwork contractors with necessary tools and equipment as per engineering quality standards.

These quality standards of Earthwork excavation in Bangalore or anywhere should follow the procedure for all new construction works like marking and setting out process, degree of accuracy, center-line markings etc., explained in detail with suitable photos and videos in this WEBSITE.

Further, we also follow the procedure for excavation works like TBM, Grid levels, earth benching, safety measures etc., explained in detail with suitable photos and videos in this WEBSITE.

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Glimpses of our Earthwork Excavation in Bangalore

  • We have tied up with leading earthwork excavation contractors in Bangalore, sub contractors who have completed many major earthwork projects in around Bangalore.
  • Capable of handling challenging earthworks, earthworks at confined space or narrow spaces, earthworks for building in all kinds of soils irrespective of its quantity in and around Bangalore.
  • Having set of Prompt and reliable contractors, following highest level of safety and quality to our clients while delivering projects on time.
  • Excavation Companies,Team of Fully equipped tools, machinery,Excavator rental and skilled workers available for reasonable earthwork excavation rates in Bangalore.
  • Handling excavation works in presence of safety mangers and supervisors and also taking safety care for own equipment and excavator on rent.

Connect with us to avail a complete construction services

Excavation for Basement and footing :
  • TBM :
  • For starting excavation works, for any structure, we need some reference points to proceed, hence, first and foremost thing is to establish Temporary Bench Marks (TBM) all round the project site.
  • These TBMs are permanent in nature and should clearly visible. Once these points are established, then by using paint and brush mark Reduced Levels (RL) on its surface.
  • Grid levels :
  • For maintaining accuracy in earthwork, it is important to take grid levels at 5 meter regular intervals before going for mass excavation.
  • But earth having sloping terrain or rolling terrain then it is very much necessary to take grid levels at close intervals, say at 3 m for greater accuracy.
  • Earthwork is carried out in a phased manner is highly advisable, to avoid any practical difficulties of excavation likely to happen in future.
  • Collection of data :
  • Collect as much as possible, all data regarding water table, period of monsoon, density of rain fall in particular location and make arrangements for dewatering pumps with discharge point accessible.
  • Keep these pumps ready, when once the depth of excavation crosses the existing water table level.
earthwork-excavation

Fig 1

earthwork excavation1

Fig 2

Earth benching :
  • It is necessary to provide shore slopes or step cut of sides called “earth benching,” as we excavate below 1.2 meters to ensure stability of sides.
  • Wherever the depth of excavation is beyond 1.2 meter, provide barricading all around the excavated area at a distance of one meter from the edge of excavation.
  • Safety measures to be strictly followed.
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Fig 3

Fig 4

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Fig 5

Earthwork Equipment:
  • Since the cost of hire charges of machinery and equipment used for excavation is very high, planning is very much essential.
  • Hence combination of manual and mechanical means of earthwork should be matched in order to avoid unnecessary idling of equipment.
Safety Measures during excavation :
  • It is better to avoid earthwork during night times. Due to lack of visibility errors may occur, even under artificial lights. Also from safety point of view it is unsafe for workers and supervisors working under poor lighting conditions.
  • With reference to the TBM (Temporary Benchmark) located around the site, depth of excavation is carefully monitored with dumpy level and carried out as per the required depth.
  • Back filling :
  • Always plan earthwork well in advance for balance cutting and filling. So that excavated earth can be stocked in site itself, and later same can be reused for back-filling, thus by minimizing cost of transportation and time.
  • Blasting :
  • With the help of compressed air jack hammer, chiseling, wedging etc., hard rock can be removed from the excavated area, likewise try to avoid blasting as much as possible.

Fig 6

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Fig 7

  • Blasting operations :
  • Under unavoidable circumstances, if blasting is essential, then work should entrusted to experienced and authorized blasting contractor.
  • After obtaining necessary statutory clearances then Controlled blasting should be resorted to.

Enough safety Signage, deployment of safety supervisor with constant monitoring is absolutely required during blasting operations.

  • Caution:
  • Carefully ascertain the location of all permanent main services namely Water supply lines, Underground cable line, sewer lines, telephone cables, OFC etc.
  • It is very much necessary to protect these lines throughout earthwork, back-filling and compaction.

Earthwork Excavation - General

The first thing we keep our mind is in the very first starting of the project, in most projects I joined with, one of the activities shall be implemented or started first is earthwork. Here we discuss about the procedure of excavation work in steps, how it actually carried out in field, without compromising engineering standards and specifications. We will discuss in detail, the practical difficulties, solutions, precautions, safety measures, challenging tasks undergoing in all types of earth works including slushy soils, in future articles.

This Method Statement describes a proper work procedure shall be carried out during the excavation stage as per specification and contract drawings.

Good for Construction drawings

Excavation & Earthwork should always as per specifications and site conditions.

 In natural and all types of soils.

Levelling Staff and ranging rods, Steel Measuring tape – 3 & 50 m, Plumb bobs, Levelling Instrument, Trowels, Nails, Steel rods, Spirit Level, Linen tape – 30m, Paint and brushes.

Measuring tape, Plumb bobs, Crowbar, Pick axe, Spade, Trowels, Nylon Line threads, Right angles and Pans.

Work Procedure

1. Marking and setting out process :

The basic idea is of marking and setting out process is to prepare an accurate surface or base for the upcoming construction activities.

It is very important to tune our mind that, even to start with the first activity – the earthwork itself, one has to maintain 100% accuracy in his work. So, one must be always careful, alert of the potential instrumental errors occurred due to the usage of instruments, and to ease out such errors by certain techniques.

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2. Degree of accuracy :

The degree of accuracy required will depend upon the type of earthwork handling at the project site. Its precision can be measured by this, whether 5 mm for prefabricated buildings (PEB), or 200 mm depth is required where more depth of excavation is involved.

3. Centreline markings :

We remember in our Engineering course, particularly in “Surveying” subject, for measuring any activity/item, we should start from “Work from the whole to the part” and repeatedly check the correctness of one’s own work with that of others and that is based on the available information.

This is easy and simple, with the adjustments of ranging rods, pegs can be fixed. Even though Total station will give accurate results, cross checks to be done at each and every stage of earthwork. In absence of total station, by means of tying line threads, which should passing through Centreline markings of grid pillars along both X axis and Y axis, required measurements on plan can be easily transferred to the ground.

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4. Always establish permanent Bench marks (BM) outside the working area at the initial stage itself, and levels to be carried out with respect to the BM’s only. If this is not carried out, the errors will be accumulated and results in valuable time loss and cost of work also.

5. The drawings what we received from the concerned architect or consultant is exactly matching with field conditions or not, hence, necessary checks to be done with reference to existing and proposed roads, other buildings and existing permanent features . Then come to the conclusion that, at what extent the plan matches to the ground conditions.

6. Ensure that site personnel including supervisors or site engineers understand the significance and importance of all centreline markings with respect to pegs or grid pillars.

7. Finally Completion of traverse in any direction say clockwise and coming back to the point of origin with corresponding opposite direction say anti clockwise is the correct method to check the work. The difference between these two readings is called the “Closing error “(CL) and that CL obtained is within permissible limits, then the method of traverse carried out is correct.

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15/4, gurunath 2 A cross Hanumagirinagar, Chikkallasandra Main Road Subramanyapura,
Bengaluru – 560061
info@myhomemydesign.in

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