Concrete Canoe Center Building - Assignment Example

AR 795228 Concrete Canoe Centre Proposal 15 February Proposal For Concrete Canoe Center Building The overall appearance of the proposed Center will be similar to the rear wall of the Pangborn Hall building, and will therefore follow similar segmented (8) architectural principles. It will be 144 feet long, 19 feet 6 inches wide and 15 feet 6 inches high. The basic structure will be built up in the following way. Within the building, there will be 18 columns each 1 foot 6 inches square and their will be 9 transverse beams each 2 feet high and 1 foot six inches wide. The floor will be built up from a single slab 1 foot thick with a slab-on-grade foundation, accompanied by a 1 foot square footing under the edge of the slab. Under the center part of the floor where will be a series of longitudinal beams, each 18 feett long, at 6 feet 6 inches center-to-center distance. The transverse beams will be connected to pairs of columns in the North-South direction. The longitudinal beams will be placed on top of the columns in the East-West direction. The roof will be built using a series of sheets that will be placed on top of the longitudinal beams to enclose the structure. To prepare the ground for the centre, approximately 650 cubic yards of earth excavation and landscaping will needed to for the floor slab, test pool (see below), and foundations, and to reconstruct the parking lot embankment. It is expected that a backhoe loader will be used to load a truck that will move all soil and any other water material encountered during construction. Access to the proposed Center will be through a pair of large double-doors on the East side, each 15 feet wide and 10 feet high, and two pairs of double-doors on North side, each 8 feet wide and 7 feet high. There will be two key internal features. Firstly, there will be a Construction Laboratory (or workshop) for the concrete canoes, situated at the West end of the proposed Center, which will include overhead storage racks. The interior drywall for this facility is to be estimated and constructed at a later date. Secondly, there will be a Test Pool for the concrete canoes, whose internal dimensions will be : depth 6 feet, width 10 feet, length 100 feet a further 800 cubic feet of reinforced concrete will be required This will require a further 6000 cubic feet (23 cubic yards) of excavation, which will needed to the accounted for as part of the Estimates presented below. The Test Pool will a rectangular trough shape with 1 foot wall and floor thicknesses. The Test Pool will positioned approximately centered in and underneath the floor slab. A water filter and pump system will be installed. The wave maker unit and flow sensors will be purchased at a later date. Regarding the materials to be used, the columns, transverse beams and floor slab will be of reinforced concrete, and the longitudinal beams will be of industry-standard structural steel of the specified profile. It is intended that the roof of the proposed Center will be of sheet metal, covered with asphalt waterproofing material. The walls of the proposed Center will be 50 % glass panels and 50 % and concrete blocks with brick facing. Current Estimates of Construction of Proposed Center The ‘bill of materials’ is as follows. Each quantity has been ‘rounded up’ to the nearest one-tenth of a cubic yard. Reinforced Concrete Columns : Each is equivalent to 1.3 cubic yards of reinforced concrete. There are 18 of these, giving the equivalent of 23.4 cubic yards of reinforced concrete. Reinforced Concrete Transverse Beams : Each is equivalent to 2.2 cubic yards of reinforced concrete. There are 9 of these, giving the equivalent of 19.8 cubic yards of reinforced concrete. Steel Longitudinal Beams : There will be a total of 24 of these beams, giving a total of 3132 feet of structural steel. Reinforced Concrete Floor : Basic ‘slab’ is equivalent to 104 cubic yards. To this should be added the ‘rim’: equivalent to 12.2 cubic yards. The Test Pool will require the equivalent of 49 cubic yards of reinforced concrete (used due to the weight of water). The sides of the building will be clad in glass panels (upper) and brick-clad concrete (lower) in the following proportions. West Side : 1116 square feet of glass, 1116 square feet of brick/concrete South Side : 152 square feet of glass, 152 square feet of brick concrete West Side : 1060 square feet of glass, 1060 square feet of brick/concrete East Side : 96 square feet of glass, 96 square feet of brick/concrete The roof (presumed flat) will consist of 2808 square feet of asphalt-coated corrugated sheet metal. There will be approximately 673 cubic yards of earth (or equivalent) to excavated. The specific items of equipment to be fitted will be as described above, and will be priced according to the schedule of costs provided. Estimated Labor Time of Project Backhoe Loader : to shift 673 cubic yards of material @ 35 cubic yards/hour = 20 hours approximately Dump Truck : to shift 673 cubic yards of material @ 20 cubic yards per hour = 34 hours approximately. Crane Truck For Beams : to shift @ 160 feet per hour : 6 hours approximately Crane Truck For Sheet Metal (roofing) @ 300 square feet/hour : 3 hours approximately. Assume one operator for each of the above vehicles : 4 individuals Concrete Assembly : 417 man-hours approximately Steel Beam Assembly : 39.5 man-hours approximately Glazier : 121.5 man-hours approximately Stone Mason (Cladding) : 30.5 man-hours approximately Supervisor : to be on site for maximum duration of project. Presume consecutive total for above tasks. This will total 671.5 man-hours. Estimated Material Costs of the Project The following items are cited at current prices. These sums will be increased foe a year’s inflation @ 3.75% in the final calculation. Columns : 18 of these, giving the equivalent of 23.4 cubic yards of reinforced concrete, @ $66.74 per cubic yard. Gives a total cost for this item of $1561.72. Transverse Beams : 9 of these, giving the equivalent of 19.8 cubic yards of reinforced concrete, @ $66.74 per cubic yard. Gives a total cost for this item of $1321.46 Longitudinal Beams : 24 of these beams, giving a total of 3132 feet of structural steel. @ $11.89 per foot. Gives a total for this item of $37239.48 Reinforced Concrete Floor : 104 cubic yards. To this should be added the ‘rim’: equivalent to 12.2 cubic yards, @ $66.74 per cubic yard. Gives a total for this item of $7755.19. Test Pool : 49 cubic yards of reinforced concrete, @ $66.74 per cubic yard. Gives a total cost for this item of $3720.26. The costs for the class panels are as follows. West Side : 1116 square feet of glass @ $17.53/square foot = $19563.48 South Side : 152 square feet of glass @ $17.53/square foot = $2664.56 West Side : 1060 square feet of glass @ $17.53/square foot = $18581.80 East Side : 96 square feet of glass @ $17.53/square foot = $1682.88 The costs for the brick/concrete cladding are as follows. West Side : 1116 square feet of brick/concrete @ $4.89/square foot = $5457.24 South Side : 152 square feet of brick concrete @ $4.89/square foot = $743.28 West Side : 1060 square feet of brick/concrete @ $4.89/square foot = $5183.40 East Side : 96 square feet of brick/concrete @ $4.89/square foot = $469.44 The specific items of equipment to be purchased are as priced as follows. Two sets large double-doors, 15 ft wide by 10 ft high @ $789 each = $1578 Two sets small double-doors, 8 ft wide by 7 ft high @ $434 each = $868 Waterproofing of Test Pool : $20,000 Filter & Pump System For Test Pool : $14,750 Storage Racks for Canoe Manufacture Laboratory : $1800 Insulation Materials For Same : $8000 Miscellaneous Consumables For above facilities : $1000 Estimated Labor Costs of Project Mobilisation/Demobilisation : $1000 Backhoe Loader : 20 hours approximately @ $47/hour gives $940 Dump Truck : 34 hours approximately @ $53/hour gives $1802 Crane Truck For Beams : 6 hours approximately @ $39/hour gives $234 Crane Truck For Sheet Metal (roofing) 3 hours approximately @ $39/hour gives 117 Assume one operator for each of the above vehicles : 4 individuals Each operator costs $27.60 per hour. Given 63 man-hours effort, this gives a cost of $1738.8 Concrete Assembly : 417 man-hours approximately @ $20.90/hour gives $6715.30 Steel Beam Assembly : 39.5 man-hours approximately @ $28.10/hour gives $1110 Glazier : 121.5 man-hours approximately @ $23.20/hour gives $2807.20 Stone Mason (Cladding) : 30.5 man-hours approximately @ $24.40 gives $707.6 Supervisor : to be on site for maximum duration of project. Presume consecutive total for above tasks. This will total 671.5 man-hours @ $27.00 gives $18130.50 Adding 15% to the above figures will give the following labor totals:- Vehicle operators : $2000 Concrete Assembly : $7722.60 Steel Beam Assembly : $1276.50 Glazier : $3228.28 Stone Mason : $813.74 Supervisor : $20851 To calculate office overheads, we need to summarise the total materials, vehicle and labor costs. These are as follows:- Construction costs : $253983.75 (summarised from above totals) Mobilisation/Demobilisation : $1000 Vehicle Costs : £3093 (summarised form above totals) Labor Costs : $35892.12 (including 15% fringe benefits) This gives a total project cost of : $292968.87 Given that office overheads are 10% of the total project cost, this gives a sum for this of $29296.89. To the above total, we should add 20% ‘contingencies’, to cover late/defective materials, unexpected soil conditions, miscalculations of materials etc. etc. This will equal $64453.16. This gives a final grand total for the project of $386718.91. It is expected that the project will actually take place in a years time, which means 3.75% inflation has to be taken into account. As only one year needs to me so accounted for, a compound inflation calculation (needed for two or more years) need not be calculated. Thus would give a final grand total cost for the project of $401220.87. Pricing Code and Materials Prices The following table cites the per-unit prices quoted for the material included in the Estimates provided above. The Estimates cited above were calculated form these per-unit prices. Item Description Cost Productivity Material Reinforced concrete including formwork and shoring, etc. 66.74 $/cy N/A Steel beams including scaffolding, etc. 11.89 $/ft N/A Corrugated sheet metal with asphalt coating 3.53 $/sf N/A Glass panels including frames, fixtures, etc. 17.53 $/sf N/A Concrete blocks and brick facing including ties, mortar, etc. 4.89 $/sf N/A Equipment Backhoe Loader, including fuel, etc. 47.00 $/h 35 cy/h Dump Truck, including fuel, etc. 53.00 $/h 20 cy/h Crane Truck, including fuel, etc. for beams, for sheet metal 39.00 $/h 39.00 $/h 160 ft/h 300 sf/h Labor Equipment Operator 27.60 $/h N/A Concrete Worker 20.90 $/h 0.5 cy/h Glazier 23.20 $/h 20 sf/h Stone Mason 24.40 $/h 30 sf/h Steel Subcontractor 28.10 $/h 80 ft/h Superintendent 27.00 $/h N/A Miscell-aneous Mobilization and demobilization 500 $/EA N/A Large double-doors, 15 ft wide by 10 ft high 789 $/EA N/A Double-doors, 8 ft wide by 7 ft high 434 $/EA N/A Waterproofing of test pool $20,000 N/A Filter and pump system $14,750 N/A Storage racks, including installation $1,800 N/A Insulation materials $8,000 N/A Consumables $1,000 N/A Fringe benefits have been taken as 15% of the labor costs. One superintendent has been assumed to be continuously be present on site. Home office overhead costs have been taken as 10% of total construction costs. The facility will be constructed a year from now and the inflation rate has been calculated at a rate of 3.75 %. One backhoe loader and one dump truck have been used for earthwork, and one crane for placing steel beams for the roof. The efficiency factors quoted in the above table have been taken as realistic for a project such as this. Read More