One of Utility Company plans to install temporary power supply cables from existing Electrical Sub-station No....
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One of Utility Company plans to install temporary power supply cables from existing Electrical Sub-station No. 210 to a temporary firewater pump located in existing seawater intake area. In view of this, your company (M/s Al-Makabayan Est.), an electrical contracting company has been requested to submit a fixed lumpsum bid for the following scope of work: o Manual excavation for cable trench 0.6 m (W) x 0.8 m (D) x 2 km on Class A soil. Excavated material will be reused for backfilling. All excess material will be cleared by others. o Machine excavation for cable trench 0.6 m (W) x 0.8 m (D) x 3 km on Class B soil. Excavated material will be reused for backfilling. All excess material will be cleared by others. o Supply and install 1-run 5 km 3Cx4/0AWGX1C armored cable, 5000V, ethylene-propylene rubber insulated with interlock armor and outer PVC jacket. o Supply and install of (sweet) sand as cable bedding (0.3m). o Supply and install cable warning tapes and protection tiles over the underground cables. ASSUMPTIONS/CONDITIONS: o Excavation Works: • Cass A site material was considered "easy digging', consists of loose, soft, free running material, the swell factor for this type of material is 15%. Class B site material, considered "medium digging", consists of harder materials that can be excavated without ripping or blasting. Class B material breaks up with bulkiness causing some voids in the dipper of bucket of excavators. The swell factor for this type of material is 25%. • Manual Excavation Productivity: • 0.6 Hour/CY (Class A) • 0.8 Hour/CY (Class B) 1.0 Hour/CY (Class C) Structural excavation using CASE 580 Loader-Backhoe Bucket Width, 12" = 5.46 CY/HR • Bucket Width, 18" = 10.22 CY/HR • Bucket Width, 24" = 15.84 CY/HR • Bucket Width, 30" 21.28 CY/HR Bucket Width, 36" = 27.39 CY/HR %3D • Labor Rates: • Labour: AED 20.00/HR Operator: Spotter: Civil F/M: AED 35.00/HR AED 25.00/HR AED 40.00/HR Electrician: AED 40.00/HR Electrical F/M: AED 55.00/HR Equipment Rate: CASE 580 Loader-Backhoe = AED 200.00/HR (excluding Operator) • Conversion Factor: • CY = 0.76 M3 o Backfilling: • Sweet Sand (delivered to site by others) = AED 50/m3 o 3Cx4/0AWG×1C armored cable • Unit price: USD 984.80/100' Installation productivity: 10 MH/100' o Cable warning tapes and protection tiles (subcontracted): • AED 75.00/LM YOUR TASK: • Prepare a detailed fixed lump sum bid estimate • Estimate project duration, manpower & Equipment requirement • To obtain fixed lumpsum price, you have been advised by your General Manager to include the following in your assumptions: o Add 5% allowance for purchases o Add 40% on productivity rate since the works to be performed inside operating plant o Add 15% on base estimate as contingency o Add 20% on base estimate as company Profit o Add 10% on base estimate to cater indirect costs One of Utility Company plans to install temporary power supply cables from existing Electrical Sub-station No. 210 to a temporary firewater pump located in existing seawater intake area. In view of this, your company (M/s Al-Makabayan Est.), an electrical contracting company has been requested to submit a fixed lumpsum bid for the following scope of work: o Manual excavation for cable trench 0.6 m (W) x 0.8 m (D) x 2 km on Class A soil. Excavated material will be reused for backfilling. All excess material will be cleared by others. o Machine excavation for cable trench 0.6 m (W) x 0.8 m (D) x 3 km on Class B soil. Excavated material will be reused for backfilling. All excess material will be cleared by others. o Supply and install 1-run 5 km 3Cx4/0AWGX1C armored cable, 5000V, ethylene-propylene rubber insulated with interlock armor and outer PVC jacket. o Supply and install of (sweet) sand as cable bedding (0.3m). o Supply and install cable warning tapes and protection tiles over the underground cables. ASSUMPTIONS/CONDITIONS: o Excavation Works: • Cass A site material was considered "easy digging', consists of loose, soft, free running material, the swell factor for this type of material is 15%. Class B site material, considered "medium digging", consists of harder materials that can be excavated without ripping or blasting. Class B material breaks up with bulkiness causing some voids in the dipper of bucket of excavators. The swell factor for this type of material is 25%. • Manual Excavation Productivity: • 0.6 Hour/CY (Class A) • 0.8 Hour/CY (Class B) 1.0 Hour/CY (Class C) Structural excavation using CASE 580 Loader-Backhoe Bucket Width, 12" = 5.46 CY/HR • Bucket Width, 18" = 10.22 CY/HR • Bucket Width, 24" = 15.84 CY/HR • Bucket Width, 30" 21.28 CY/HR Bucket Width, 36" = 27.39 CY/HR %3D • Labor Rates: • Labour: AED 20.00/HR Operator: Spotter: Civil F/M: AED 35.00/HR AED 25.00/HR AED 40.00/HR Electrician: AED 40.00/HR Electrical F/M: AED 55.00/HR Equipment Rate: CASE 580 Loader-Backhoe = AED 200.00/HR (excluding Operator) • Conversion Factor: • CY = 0.76 M3 o Backfilling: • Sweet Sand (delivered to site by others) = AED 50/m3 o 3Cx4/0AWG×1C armored cable • Unit price: USD 984.80/100' Installation productivity: 10 MH/100' o Cable warning tapes and protection tiles (subcontracted): • AED 75.00/LM YOUR TASK: • Prepare a detailed fixed lump sum bid estimate • Estimate project duration, manpower & Equipment requirement • To obtain fixed lumpsum price, you have been advised by your General Manager to include the following in your assumptions: o Add 5% allowance for purchases o Add 40% on productivity rate since the works to be performed inside operating plant o Add 15% on base estimate as contingency o Add 20% on base estimate as company Profit o Add 10% on base estimate to cater indirect costs
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Taxation for Decision Makers 2017
ISBN: 9781119373735
7th edition
Authors: Shirley Dennis-Escoffier, Karen Fortin
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