Productivity analysis of Burried/underground cable laying Activity

Productivity Analysis of Cable Laying

Productivity Analysis of Cable LayingPackage 2 / Sector 10

SEC 10 LAYOUT

SECTOR 10 WORK STATUSTotal Scope: 125 kms (as per schedule)Actual Completion: 122.895 kms (as per site condition)

Total No. of Plots: 484 Nos

Total No. of Roads: 44 Nos (5294 mtrs)Road Handed over for Civil works: 5294 mtrs

CABLE LAYINGActivity Inclusive of:Marking Plots Chainage / TrenchCivil clearances, if anyExcavation - Cable TrenchDewatering Trench Logistics Cable Drum ShiftingPre testing Meggering of cable before layingRoad Crossing - Hume Pipe layingPlot crossing - DWC pipe layingCable TaggingTesting & endcap fixing

Cable Laying Duration: 74 days

Labour Engaged for Cable Laying works

Overall Productivity of Sector 10 Cable laying works

Size Wise Actual Laid length

Executed Work Cost Cable

Size Wise % Distribution Sector 10

Cost Analysis LOGISTICSTrailer: Rs. 5000 / day (Rental)No. of trips a day : 3 Cost of per trip: 5000/3 = Rs. 1666.7Drums shifted 5*500 = 2500 mtrsPer mtr cost of trailer engaged = 2500/1666.7 = Rs. 1.5 / mtr

Hydra: 8 Hrs X 1200 / hr = Rs. 9600 / dayDrum shifted 15 * 500 = 7500 mtrsPer mtr cost of Hydra engaged = 7500/9600 = Rs. 0.80 / mtr

MANPOWER / OUTSOURCE

Weighted Avg. per mtr cost = Rs. 15 Outsource = 48% of Rs. 15 for labors = Rs. 7.2 / mtr

Cost (Logistics) / mtr 3.00Outsource / manpower 7.2Total Cost 10.20 Cost of Cable Laying 15.00 Margin32%

AGENCY1: PREMIER PLANT & ENGG. LTD.Total cable laid (in Kms): 17.538Total Mandays: 453

WEEK WISE CABLE LAYING PROGRESS

WEEK WISE LABOUR ENGAGED

PRODUCTIVITYTotal Kms laid: 17.538Total Mandays engaged: 453

Productivity of each labor: 17.538/453 = 0.039 (kms)In mtrs = 0.039 x 1000= 39 (mtrs) / day (avg.)

Therefore: productivity a of a labor x no. of labor engaged

Note: Above calculation is done for 8 hr/day (std. working hrs)

AGENCY 2: N. GOVINDRAJ

WEEK WISE CABLE LAYING PROGRESS

WEEK WISE LABOR ENGAGED

PRODUCTIVITYTotal Kms laid: 78.316Total Mandays engaged: 836

Productivity of each labor: 78.316 / 836 = 0.094 (kms)In mtrs = 0.094 x 1000= 94 (mtrs) / day (avg.)

Therefore: productivity a of a labor x no. of labor engaged

Note: Above calculation is done for 8 hr/day (std. working hrs)

AGENCY 3: RAMESHWAR SINGH

WEEK WISE CABLE LAYING PROGRESS

WEEK WISE LABOR ENGAGED

PRODUCTIVITYTotal Kms laid: 26.946Total Mandays engaged: 253

Productivity of each labor: 26.946 / 253 = 0.107 (kms)In mtrs = 0.107 x 1000= 107 (mtrs) / day (avg.)

Therefore: productivity a of a labor x no. of labor engaged

Note: Above calculation is done for 8 hr/day (std. working hrs)

Constraint'sManpower : Holi festival (unavailability of labour in 2nd week of march for 7 10 days)

Equipment: Tight schedule of Hydra, for shifting cable drums

Turntable UtilizationFor sector 10:

Total cable laid: 123 kmsDuration: 74 days

Avg. laying progress per day: 123 / 74 = 1.66 kmsFor a week = 1.66 x 7 = 11.63 kms (avg.)

Thats equivalent to turntable efficiency

Avg. Turntable Efficiency

12.50 kms (avg.)/ week

Agency AnalysisM/s. Premier Plant & Engg. Ltd.Unable to adapt the site condition (stringent in nature)Unable to mobilize the manpowerUnskilled supervisor Unable to engage Hydra Time: unavailability of supervisors at site in time

Agency AnalysisM/s. N. GovindrajFlexible and adaptive as per site condition Able to mobilize the materials (owned pick up van)Able to engage hydraSupervisor 4 nos Easy to manage / easy to line up activity, hard to maintain reconciliation Reliable to work with itPerfect Bell curve for mobilizing manpower

Agency AnalysisM/s. Rameshwar SinghEngage low manpower Only One supervisor hence easy for reconciliation, delay in managing site.Less reliable as compared to N. GovindrajLost interest at the end of the project

References: Daily Labor report, Time office

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