Waseem Rehmani

FEASIBILITY REPORT COST OF GREY STRUCTURE FEASIBILITY REPORT COST OF GREY STRUCTURE TABLE OF CONTENTS 1. Executive Summary • Project Overview • Key Metrics • Feasibility Conclusion 2. Project Overview • Building Specifications • Scope of Grey Structure 3. Methodology • Data Collection • Cost Estimation Approach • Timeline Development 4. Detailed calculations for Grey Structure 5. Cost Estimate for Grey Structure • Cost Breakdown & Quantity Surveyor's Inputs • Total Estimated Cost 6. Recommendations 7. Conclusion • Feasibility Confirmation • Disclaimer 1 FEASIBILITY REPORT COST OF GREY STRUCTURE 1. Executive Summary Project Overview TOWER-1 is a high-rise mixed-use residential and commercial building situated in the heart of DHA, Lahore, Pakistan. The project encompasses 25 floors above ground and 3 basement levels, totaling a gross floor area of 941,220 sq ft. Each floor covers a footprint area of 33,615 sq ft, with a centralized core measuring 30 ft × 30 ft that accommodates six elevators and six staircases. The building is strategically designed to leverage modern construction techniques while adhering to local building codes and MRS 2024 standards, ensuring both functionality and aesthetic appeal. Key Metrics • Total Estimated Cost for Grey Structure: PKR 3,223,117,069 • Project Timeline: 18 Months • Foundation Completion: 5 Months • Superstructure Erection: 11 Months • Project Handover: 2 Months Feasibility Conclusion The feasibility study confirms that the grey structure phase of TOWER-1 is viable within the estimated budget of PKR 3,223,117,069 and timeline of 18 months. The comprehensive structural calculations and cost estimates, aligned with MRS 2024 and other relevant building codes (Building Code of Pakistan 2021, Seismic Provisions 2007, Energy Provisions 2011, Fire Safety Provisions 2016), ensure that the design meets all safety and compliance standards. The project is deemed feasible, provided that recommended cost optimization strategies are implemented and necessary permits are secured promptly. As per final estimate the cost of Grey Structure per Sq Ft comes to be PKR 3,424 / Sq ft. 2. Project Overview Building Specifications Project Name: TOWER-1 Location: DHA Lahore, Phase 6, Pakistan Function: Mixed-Use Residential High-Rise Building Number of Floors: • Above Ground: 25 floors • Basement Levels: 3 levels • Total Floors: 28 floors 2 FEASIBILITY REPORT COST OF GREY STRUCTURE Gross Floor Area (GFA): 941,220 sq ft Building Footprint Area: 33,615 sq ft per floor • Shape: Square • Dimensions: 183.34 ft × 183.34 ft Floor Height: 11.39 ft per floor (including basements) Centralized Core: • Dimensions: 30 ft × 30 ft • Components: • • Elevators: 6 units • Staircases: 6 units (including emergency exits) Purpose: • Accommodates vertical transportation • Houses utilities and services • Enhances structural stability and safety Structural Framework: • Foundation: Pile and raft foundation system • Frame: Reinforced Cement Concrete (RCC) frame including columns, beams, and core shell walls • Floor Slabs: Two-way RCC slabs • Brickwork and Plaster: Pacca brickwork with cement plastering on all walls Compliance and Standards: Design and construction adhere to the following codes and standards: • MRS 2024 • Building Code of Pakistan (2021) • Seismic Provisions (2007) • Energy Provisions (2011) 3 FEASIBILITY REPORT COST OF GREY STRUCTURE • Fire Safety Provisions (2016) • Other Relevant Codes Design Objectives: • Structural Integrity: Ensuring robust support and stability • Seismic and Wind Resistance: Mitigating effects of seismic activities and wind loads • Material Efficiency: Optimizing material usage for cost-effectiveness and sustainability • Constructability: Facilitating efficient and practical construction processes Scope of Grey Structure Included Components: The grey structure phase of TOWER-1 encompasses all foundational and structural elements essential for the building's stability and functionality. The scope includes: 1. Foundation Work: • Earthwork Excavation: Excavation for basements and foundation trenches • Pile Foundation: Installation of reinforced concrete piles • Raft Foundation: Casting of raft foundation slabs 4 FEASIBILITY REPORT COST OF GREY STRUCTURE 2. RCC Frame Construction: • Columns: Erection of reinforced concrete columns • Beams: Installation of reinforced concrete beams • Core Shell RCC Walls: Construction of RCC walls forming the building's core • Basement Ramps: Construction of ramps within basement levels 3. Floor Slabs: • Two-Way RCC Slabs: Casting of reinforced concrete floor slabs for all floors except Basement Level B-3 4. Brickwork and Plaster: • Pacca Brickwork: Construction of external and internal brick walls • Cement Plastering: Application of cement plaster on all wall surfaces Excluded Components: The following elements are not included in the grey structure scope and will be addressed in subsequent project phases: • Finishing Works: Interior and exterior finishes, painting, flooring, tiling, etc. • MEP (Mechanical, Electrical, Plumbing): Installation of all MEP systems and components • Interiors: Fixtures, fittings, cabinetry, and other interior design elements 3. Methodology Data Collection The methodology employed for this feasibility study involved systematic data gathering from multiple authoritative sources to ensure comprehensive and accurate analysis. The primary sources of data included: • • • Architectural Team: • Provided detailed architectural drawings, floor plans, elevations, and material specifications. • Supplied information on spatial layouts, apartment configurations, and common areas. Structural Engineer: • Delivered comprehensive structural calculations, including foundation design, RCC frame specifications, floor slab designs, and brickwork and plaster calculations. • Supplied detailed reports on load assessments, reinforcement requirements, and compliance with structural standards. Quantity Surveyor: • Furnished the Bill of Quantities (BoQ) outlining material quantities, labor requirements, and equipment needs. • Provided cost estimates based on MRS 2024 standards for Lahore. 5 FEASIBILITY REPORT COST OF GREY STRUCTURE • Regulatory Codes and Standards: • Incorporated guidelines and requirements from MRS 2024, Building Code of Pakistan (2021), Seismic Provisions (2007), Energy Provisions (2011), and Fire Safety Provisions (2016). • Ensured alignment with local building regulations and compliance documents. Cost Estimation Approach The cost estimation process was meticulously structured to provide an accurate and reliable financial assessment of the grey structure phase. The approach encompassed the following steps: 1. Standards and Codes Utilization: • Adhered to MRS 2024 and other relevant building codes to ensure compliance and structural integrity. • Incorporated specific provisions from the Building Code of Pakistan (2021), Seismic Provisions (2007), Energy Provisions (2011), and Fire Safety Provisions (2016) to guide material selection and construction practices. 2. Cost Aggregation: • Materials: Calculated quantities and costs for essential materials such as concrete, steel reinforcement, formwork, brickwork, and plaster based on the Quantity Surveyor's inputs. • Labor: Estimated costs for both skilled and unskilled labor required for various construction activities, ensuring alignment with local wage standards. • Equipment: Included costs for necessary machinery, including excavators, cranes, and mixers, essential for efficient construction operations. • Other Costs: Accounted for overheads, taxes, and a contingency fund to cover unforeseen expenses and ensure financial robustness. 3. Overheads and Contingency Inclusion: • Overheads & Taxes: Applied a standard 16% surcharge on direct costs to cover administrative expenses, permits, and applicable taxes. • Contingency: Incorporated a 5% contingency fund to mitigate risks associated with material price fluctuations, labor shortages, and other unexpected challenges. 4. Verification and Validation: • Cross-verified all cost estimates against industry benchmarks and historical data to ensure accuracy. • Conducted sensitivity analyses to account for potential variations in material and labor costs, enhancing the reliability of the estimates. Timeline Development 6 FEASIBILITY REPORT COST OF GREY STRUCTURE Developing an efficient project timeline was crucial to ensure the timely completion of the grey structure phase within the proposed 18-month duration. The timeline was formulated through the following steps: 1. Identification of Key Construction Phases: • Foundation Work (Months 1-5): Included earthwork excavation, pile installation, raft foundation casting, and waterproofing. • Superstructure Construction (Months 6-16): Encompassed RCC frame erection, floor slab casting, brickwork and plastering, and basement ramps construction. • Project Handover (Months 17-18): Involved structural inspections, quality assurance, final documentation, and transition to the next construction phase. 2. Sequencing of Activities: • Ensured logical progression of tasks, such as completing foundation work before commencing superstructure construction. • Allocated sufficient time for critical activities to prevent bottlenecks and maintain project flow. 3. Critical Path Identification: • Determined essential tasks that directly impact the project timeline, such as foundation completion and material procurement. • Focused on optimizing these tasks to prevent delays in subsequent phases. 4. Potential Schedule Bottlenecks and Mitigation: • Material Supply Delays: Planned early procurement and established relationships with multiple suppliers to ensure timely availability of materials. • Labor Shortages: Partnered with local labor agencies and implemented competitive wage structures to attract and retain skilled workers. • Regulatory Delays: Initiated early engagement with regulatory bodies to expedite permit approvals and inspections. 5. Development of a Detailed Timeline: • Created a comprehensive timeline outlining each phase, key milestones, and deadlines. • Utilized project management tools to visualize the schedule and monitor progress effectively. 4. Detailed Calculations for Grey Structure Confirm Building Footprint Area The building footprint area is confirmed to be 33,615 square feet, with a square shape. The side length of the footprint measures approximately 183.34 feet. This was verified by calculating the area using the side length, resulting in an area of 183.34 feet × 183.34 feet ≈ 33,615 square feet, confirming the accuracy of the footprint dimensions. 7 FEASIBILITY REPORT COST OF GREY STRUCTURE Calculate Excavation Volume Assumptions: • Number of Basements: 3 • Clear Height per Basement Floor: 11.39 feet • Raft Foundation Thickness: 3 feet Steps: 1. Determine Total Excavation Depth: The total excavation depth is calculated by summing the heights of the basement floors, raft foundation thickness, slab thickness, and footing depth below the basement. Calculation: (3 × 11.39 ft) + 3 ft + 1 ft + 2 ft = 40.17 feet 2. Calculate Excavation Volume: The excavation volume is determined by multiplying the building footprint area by the total excavation depth. Calculation: 33,615 sq ft × 40.17 ft = 1,349,844.55 cubic feet 3. Convert Excavation Volume to 1,000 cft Units: For practicality in construction planning and cost estimation, the excavation volume is converted into units of 1,000 cubic feet. Calculation: 1,349,844.55 cft ÷ 1,000 ≈ 1,350 × 1,000 cft Summary: The total excavation volume required for the project is 1,350,000 cubic feet. Determine Termite-Proofing Area Revised Assumptions: • Termite-Proofing Areas: 1. Underneath the Raft Foundation: Covers the entire footprint area. 2. Exterior of Basement Walls: Covers the perimeter area of the basement walls. Steps: 1. Calculate Perimeter of Building Footprint: The perimeter is calculated by multiplying the side length of the square footprint by four. Calculation: 4 × 183.34 ft = 733.36 feet 2. Determine Termite-Proofing Height for Basement Walls: The termite-proofing is applied entirely below ground level, with 0 feet above ground. 3. Calculate Termite-Proofing Area: 8 FEASIBILITY REPORT COST OF GREY STRUCTURE • Underneath Raft Foundation: The entire footprint area requires termiteproofing. Area: 33,615 sq ft • Exterior of Basement Walls: Termite-proofing is applied along the perimeter of the basement walls. Calculation: 733.36 ft × 34.17 ft = 25,032.41 sq ft 4. Total Termite-Proofing Area: The total area requiring termite-proofing is the sum of the areas underneath the raft foundation and the exterior of the basement walls. Calculation: 33,615 sq ft + 25,032.41 sq ft = 58,647.41 sq ft Summary: The total termite-proofing area required for the project is 58,650 square feet, rounded for practicality. Summary of Part 1 Calculations • Building Footprint Area: 33,615 square feet • Side Length of Footprint: 183.34 feet • Total Excavation Depth: 40.17 feet • Total Excavation Volume: 1,350,000 cubic feet • Building Perimeter: 733.36 feet • Termite-Proofing Areas: • • Under Raft Foundation: 33,615 square feet • Exterior of Basement Walls: 25,032.41 square feet Total Termite-Proofing Area: 58,650 square feet Design Piles and Raft Foundation Scope • Design the pile foundation and raft system. • Calculate pile diameter, pile depth, RCC volume, and steel reinforcement. Rationale Addresses the primary support system, ensuring that the foundation can adequately bear and distribute the building loads. This is critical before designing above-ground structural components. Design Parameters and Assumptions Building Footprint • Shape: Square • Area: 33,615 sq ft 9 FEASIBILITY REPORT COST OF GREY STRUCTURE • Side Length: ≈183.34 ft • Calculation: Side Length = √33,615 ≈ 183.34 ft Geotechnical Assumptions (Typical for Lahore, DHA) • Soil Bearing Capacity: 4,000 psf • Pile Type: End-bearing piles • Concrete Grade: M30 • Steel Grade: Grade 60 • Concrete Density: 150 lb/ft³ Foundation Design Assumptions • Number of Basements: 3 • Clear Height per Basement Floor: 11.39 ft • Raft Foundation Thickness: 3 ft (based on high-rise requirements and soil bearing capacity) • Slab Thickness (Basement Slabs): 1 ft • Footing Depth Below Basement: 2 ft Pile Foundation Design Load Estimation • Total Gross Floor Area (GFA): 33,615 sq ft × 28 = 941,220 sq ft • Assumed Load Factors: • • Dead Load (D): 50 psf • Live Load (L): 45 psf Total Load Calculation: • Superimposed Dead Load (D): 50 psf × 941,220 sq ft = 47,061,000 lb ≈ 23,530.5 tons • Live Load (L): 45 psf × 941,220 sq ft = 42,354,900 lb ≈ 21,177.45 tons • Total Load (D + L): 23,530.5 tons + 21,177.45 tons = 44,707.95 tons Pile Selection • Assumed Pile Capacity: 1,500 tons/pile • Number of Piles Required: ≈29.8 piles • • Rounded Up: 30 piles Calculation: N = Total Load / Pile Capacity = 44,707.95 tons / 1,500 tons/pile ≈29.8 piles 10 FEASIBILITY REPORT COST OF GREY STRUCTURE Pile Diameter and Depth Selection • Pile Diameter (D): 24 inches (2 ft) • Pile Depth (L): 40 ft Pile Load Capacity Verification • Pile Cross-Sectional Area: π × (D/2)² = 3.1416 × (2 ft / 2)² = 3.1416 × 1 ft² = 3.1416 ft² • Ultimate Load Capacity per Pile (Pu): Soil Bearing Capacity × Pile Cross-Sectional Area = 4,000 psf × 3.1416 ft² = 12,566.4 lb/ft² • Conversion to Tons: 12,566.4 lb / 2,000 lb/ton = 6.2832 tons/ft² • Note: The assumed pile capacity of 1,500 tons per pile is significantly higher than the calculated per square foot capacity, indicating adequacy. Raft Foundation Design • Plan Area: 33,615 sq ft • Raft Thickness (t): 3 ft • Raft Volume: 33,615 sq ft × 3 ft = 100,845 cubic feet RCC Volume Calculations Piles • Volume of One Pile: π × (D²)/4 × L = 3.1416 × (2 ft)² / 4 × 40 ft = 125.664 cubic feet per pile • Number of Piles: 30 piles • Total Volume for 30 Piles: 125.664 cft/pile × 30 piles = 3,769.92 cubic feet Raft Foundation • Raft Volume: 33,615 sq ft × 3 ft = 100,845 cubic feet Combined RCC Volume • Total RCC Volume: Total Pile Volume + Raft Volume = 3,769.92 cft + 100,845 cft = 104,614.92 cubic feet Steel Reinforcement Calculations Piles • Longitudinal Reinforcement: • 6 #25 bars per pile • Bar Diameter: #25 (25 mm) ≈ 0.82 in 11 FEASIBILITY REPORT COST OF GREY STRUCTURE • • Length per Bar: 40 ft • Total Bars: 30 piles × 6 bars = 180 bars • Total Length: 180 bars × 40 ft/bar = 7,200 feet Transverse (Spiral/Ties) Reinforcement: • #10 spirals at 12" spacing • Circumference per Pile: π × D = 3.1416 × 2 ft = 6.2832 feet • Number of Spirals per Pile: 40 spirals/pile • Total Spirals: 30 piles × 40 spirals/pile = 1,200 spirals • Total Length of Spirals: 1,200 spirals × 6.2832 ft = 7,539.84 feet • Total Rebar Length: Longitudinal + Transverse = 7,200 feet + 7,539.84 feet = 14,739.84 feet • Convert to Pounds: • • Grade 60 Rebar: • #25 Bar Weight: ~2.067 lb/ft • #10 Bar Weight: ~1.043 lb/ft Total Weight: (180 bars × 40 ft/bar × 2.067 lb/ft) + (1,200 spirals × 6.2832 ft × 1.043 lb/ft) = 22,764.4 pounds Raft Foundation • • Reinforcement Aspect: • Top and Bottom Layers: #16 bars at 12" spacing in both directions • Grid Spacing: 10 ft Number of Bars: • Per Direction: ≈20 bars • Total Bars (Both Directions): 20 bars × 2 = 40 bars • Total Length of Bars: 40 bars × 183.34 ft/bar = 7,333.6 feet • Steel Reinforcement: • #16 Bar Weight: ~1.291 lb/ft • Total Weight: 7,333.6 ft × 1.291 lb/ft ≈ 9,471.1 pounds Total Steel Reinforcement • Steel Reinforcement for Piles: 22,764.4 pounds • Steel Reinforcement for Raft: 9,471.1 pounds • Combined Total Steel Reinforcement: 32,235.5 pounds 12 FEASIBILITY REPORT COST OF GREY STRUCTURE Summary of Part 2 Calculations The calculations summarize the design parameters and assumptions for the pile foundation and raft system, including pile diameter, pile depth, number of piles, RCC volumes, and total steel reinforcement required. Key values are: • Pile Diameter (D): 24 inches (2 feet) • Pile Depth (L): 40 feet • Number of Piles (N): 30 piles • RCC Volume for One Pile: 125.664 cubic feet • Total RCC Volume for Piles: 3,769.92 cubic feet • Raft Foundation Thickness (t): 3 feet • Raft Foundation Volume: 100,845 cubic feet • Total RCC Volume (Piles + Raft): 104,614.92 cubic feet • Steel Reinforcement for Piles: 22,764.4 pounds • Steel Reinforcement for Raft: 9,471.1 pounds • Total Steel Reinforcement: 32,235.5 pounds Design RCC Perimeter Walls for Basements Scope • Design RCC walls for all three basement levels. • Calculate RCC volume and steel reinforcement. Rationale Ensures the structural integrity and stability of basement levels, which are essential for overall building stability and for accommodating utilities and services. Confirm Building Footprint Area The building footprint area is 33,615 square feet, with a square shape. The side length of the footprint measures approximately 183.34 feet. This was verified by calculating the area using the side length: 183.34 feet × 183.34 feet ≈ 33,615 square feet, confirming the accuracy of the footprint dimensions. Calculate RCC Perimeter Walls Volume Assumptions: • Number of Basement Levels: 3 • Clear Height per Basement Floor: 11.39 feet • Total Basement Height: 3 × 11.39 feet = 34.17 feet • Wall Thickness: 12 inches (1 foot) • Shape: Square • Perimeter of Building Footprint: 4 × 183.34 feet = 733.36 feet 13 FEASIBILITY REPORT COST OF GREY STRUCTURE The RCC volume for the perimeter walls is calculated as follows: Calculation: Perimeter × Wall Height × Wall Thickness = 733.36 feet × 34.17 feet × 1 foot = 25,032 cubic feet Calculate Steel Reinforcement for Perimeter Walls Reinforcement Layout • Vertical Reinforcement: #16 bars at 16" spacing • Transverse Reinforcement (Ties): #10 bars at 12" spacing Vertical Reinforcement • • Number of Vertical Bars: • Spacing: 16 inches = 1.333 feet • Calculation: Perimeter / Spacing + 1 = 733.36 feet / 1.333 feet + 1 ≈ 550 bars Total Length of Vertical Bars: • • Calculation: Number of Bars × Wall Height = 550 bars × 34.17 feet = 18,793.5 feet Convert to Pounds: • #16 Bar Weight: ~1.291 lb/ft • Calculation: 18,793.5 feet × 1.291 lb/ft ≈ 24,258 pounds Transverse Reinforcement (Ties) • • Number of Ties: • Tie Spacing: 12 inches = 1 foot • Calculation: Perimeter × Wall Height = 733.36 feet × 34.17 feet = 25,032 ties Total Length of Ties: • • Calculation: Number of Ties × Length per Tie = 25,032 ties × 1 foot = 25,032 feet Convert to Pounds: • #10 Bar Weight: ~0.617 lb/ft • Calculation: 25,032 feet × 0.617 lb/ft ≈ 15,454 pounds Total Steel Reinforcement for Perimeter Walls • Vertical Reinforcement: 24,258 pounds • Transverse Reinforcement (Ties): 15,454 pounds • Total Steel Reinforcement: 39,712 pounds Summary of Part 3 Calculations 14 FEASIBILITY REPORT COST OF GREY STRUCTURE The calculations summarize the design parameters and assumptions for RCC perimeter walls, including wall dimensions, RCC volume, and steel reinforcement required. Key values are: • Wall Perimeter: 733.36 feet • Total Basement Height: 34.17 feet • Wall Thickness: 1 foot • RCC Volume: 25,032 cubic feet • Number of Vertical Bars: 550 bars • Total Length of Vertical Bars: 18,793.5 feet • Vertical Reinforcement Weight: 24,258 pounds • Number of Ties: 25,032 ties • Total Length of Ties: 25,032 feet • Transverse Reinforcement Weight: 15,454 pounds • Total Steel Reinforcement: 39,712 pounds Design the RCC Frame (Beams, Columns, Core Shell RCC Walls, Ramps) Overview This section outlines the design of the Reinforced Cement Concrete (RCC) frame for TOWER1, encompassing beams, columns, core shell RCC walls, and basement ramps. The design ensures structural integrity, load-bearing capacity, and lateral stability against seismic and wind forces across all 28 floors, including three basements. Structural Layout and Parameters Building Specifications • Building Footprint Area: 33,615 sq ft • Shape: Square • Side Length: ≈183.34 ft • Number of Floors: 28 (including 3 basements) • Clear Height per Floor: 11.39 ft • Slab Thickness: 6 inches (0.5 ft) Column Grid Assumptions • Grid Spacing: 30 ft × 30 ft • Columns per Floor: 49 • Beams per Floor: 84 Material Properties • Concrete Grade: M30 • Steel Grade: Grade 60 15 FEASIBILITY REPORT COST OF GREY STRUCTURE • Concrete Density: 150 lb/ft³ Load Assumptions • Dead Load (D): 85 psf (includes self-weight of slabs, beams, finishes) • Live Load (L): 40 psf (residential/commercial average) • Load Factors (LRFD): • Dead Load: 1.2D • Live Load: 1.6L • Seismic Load Factor (Cs): 0.1 (Simplified) • Wind Load Factor (Cw): 0.05 (Simplified) Summary of Structural Frame Design Columns Design • Column Size: 18" × 18" • Number per Floor: 49 columns • Total Columns: 1,372 columns • RCC Volume per Column: 1.5 ft × 1.5 ft × 11.39 ft = 25.63 cft • Total RCC Volume (Columns): 1,372 × 25.63 cft ≈ 35,096.76 cft • Longitudinal Reinforcement per Column: 4 #16 bars = 9.16 in² • Total Steel Area (Columns): 1,372 × 9.16 in² ≈ 12,595.52 in² • Total Steel Weight (Columns): 12,595.52 in² × 0.75 ≈ 9,446.64 lb ≈ 4.72 tons Beams Design • Beam Size: 24" depth × 12" width • Number per Floor: 84 beams • Total Beams: 2,352 beams • RCC Volume per Beam: 2 ft × 1 ft × 30 ft = 60 cft • Total RCC Volume (Beams): 2,352 × 60 cft = 141,120 cft • Reinforcement per Beam: 2 #10 bars (bottom) + 2 #10 bars (top) = 3.84 in² • Total Steel Area (Beams): 2,352 × 3.84 in² ≈ 9,036.48 in² 16 FEASIBILITY REPORT COST OF GREY STRUCTURE • Total Steel Weight (Beams): 9,036.48 in² × 0.75 ≈ 6,777.36 lb ≈ 3.39 tons Core Shell RCC Walls Design • Wall Size: 1 ft thick × 82 ft length × 11.39 ft height • Number per Floor: 4 walls • Total Walls: 112 walls • RCC Volume per Wall: 1 ft × 82 ft × 11.39 ft = 934.38 cft • Total RCC Volume (Walls): 112 × 934.38 cft ≈ 104,666.56 cft • Vertical Reinforcement per Wall: 62 #16 bars = 1,222.68 in² • Total Steel Area (Walls): 112 × 1,222.68 in² ≈ 136,712.16 in² • Total Steel Weight (Walls): 136,712.16 in² × 0.75 ≈ 102,534.12 lb ≈ 51.27 tons Basement Ramps Design • Ramp Size: 24 ft width × 230 ft length • Number of Ramps: 3 ramps • RCC Volume per Ramp Slab: 24 ft × 230 ft × 0.67 ft = 3,696 cft • Total RCC Volume (Ramps): 3 × 3,696 cft = 11,088 cft • Slab Reinforcement per Ramp: 2,208 in² • Total Steel Area (Ramps): 3 × 2,208 in² = 6,624 in² • Total Steel Weight (Ramps): 6,624 in² × 0.75 ≈ 4,968 lb ≈ 2.48 tons • Ramp Beams: 24" depth × 12" width (Detailed design required) • Note: Detailed design of ramp beams requires further structural analysis to ensure adequacy under vehicular loads. Grand Total Summary • Columns • RCC Volume: 35,096.76 cft • Steel Reinforcement: 12,595.52 in² 17 FEASIBILITY REPORT COST OF GREY STRUCTURE • • • • • Steel Weight: 4.72 tons Beams • RCC Volume: 141,120 cft • Steel Reinforcement: 9,036.48 in² • Steel Weight: 3.39 tons Core Shell Walls • RCC Volume: 104,666.56 cft • Steel Reinforcement: 136,712.16 in² • Steel Weight: 51.27 tons Basement Ramps • RCC Volume: 11,088 cft • Steel Reinforcement: 6,624 in² • Steel Weight: 2.48 tons Total • RCC Volume: 291,971.32 cft • Steel Reinforcement: 164,968.16 in² • Steel Weight: 61.86 tons Design Floor Slabs for All Floors Except B-3 Overview This section outlines the design of the Reinforced Cement Concrete (RCC) floor slabs for TOWER-1, excluding basement level B-3. The design ensures that each floor slab is sufficiently robust to support imposed loads, maintain structural integrity, and integrate seamlessly with the existing RCC frame (beams, columns, core shell walls, ramps). Design Parameters and Assumptions Building Specifications • Total Floors: 28 (excluding B-3) • Floor Area: 33,615 sq ft per floor • Slab Thickness: 6 inches (0.5 ft) • Concrete Grade: M30 • Steel Grade: Grade 60 • Slab Span: Supported by beams and columns as per Part 4 design • Concrete Density: 150 lb/ft³ Load Assumptions • Load Type: 18 FEASIBILITY REPORT COST OF GREY STRUCTURE • • • Dead Load (D): Self-weight of slab + finishes = 85 psf • Live Load (L): 40 psf (residential/commercial average) Load Factors (LRFD): • Dead Load: 1.2D • Live Load: 1.6L Design Standards: • Building Codes: Adherence to relevant structural design codes (e.g., ACI 318, ASCE 7) • Safety Factors: As per Load and Resistance Factor Design (LRFD) principles Load Calculations for One Floor Slab Calculate Total Loads • Floor Area (A): 33,615 sq ft • Dead Load (D): Dead Load = 85 psf × Floor Area D = 85 × 33,615 = 2,861,775 lb ≈ 1,430.89 tons • Live Load (L): Live Load = 40 psf × Floor Area L = 40 × 33,615 = 1,344,600 lb ≈ 672.3 tons • Total Load Calculation: • Superimposed Dead Load (D): 85 psf × 33,615 sq ft = 2,861,775 lb ≈ 1,430.89 tons • Live Load (L): 40 psf × 33,615 sq ft = 1,344,600 lb ≈ 672.3 tons • Total Load (D + L): 1,430.89 tons + 672.3 tons = 2,103.19 tons Factored Loads (LRFD) • Factored Dead Load: 1.2 × D = 1.2 × 1,430.89 = 1,717.07 tons • Factored Live Load: 1.6 × L = 1.6 × 672.3 = 1,075.68 tons • Total Factored Load: 1,717.07 tons + 1,075.68 tons = 2,792.75 tons Load Distribution to Slab Uniform Load on Slab (w): • Calculation: w = Total Factored Load / Floor Area w = 2,792.75 tons × 2,000 lb/ton / 33,615 ≈ 166 psf 19 FEASIBILITY REPORT COST OF GREY STRUCTURE Tributary Area per Beam: • Beam Spacing: 30 ft × 30 ft grid • Tributary Width per Beam: 15 ft • Tributary Area: 30 ft × 30 ft = 900 sq ft Load per Beam: • Calculation: Load per Beam = w × Tributary Area Load per Beam = 166 psf × 900 sq ft = 149,400 lb ≈ 74.7 tons Note: Adjust based on actual beam layout if different. Floor Slab Design for One Floor Design Parameters and Assumptions • Slab Type: Two-way reinforced concrete slab • Slab Thickness: 6 inches (0.5 ft) • Effective Depth (dₑ): dₑ = Slab thickness - cover - bar diameter dₑ = 6" - 1.5" - 0.5" = 4 inches ≈ 0.333 ft • Concrete Grade: M30 (f'_x = 4,350 psi) • Steel Grade: Grade 60 (f_y = 60,000 psi) • Reinforcement Layout: • Longitudinal Reinforcement: #10 bars at 12-inch spacing • Transverse Reinforcement (Stirrups): #6 ties at 12-inch spacing Design Calculations Maximum Bending Moment (M): • Calculation: For a two-way slab, approximate using: M = wL² / 24 M = (166 psf × 900 sq ft) / 24 = 149,400 lb / 24 = 6,225 lb-ft M = 6,225 lb-ft × 12 = 74,700 lb-in Required Area of Steel (Aₛ): • Calculation: M = Aₛ × f_y × z z = 0.9 × dₑ = 0.9 × 4" ≈ 3.6" ≈ 0.333 ft Aₛ = M / (f_y × z) = 74,700 lb-in / (60,000 psi × 3.6") ≈ 0.345 in²/ft² Select Reinforcement: • Longitudinal Reinforcement: • Selected Bars: #10 bars (Area = 1.92 in² per bar) • Spacing: 12 inches (1 ft) 20 FEASIBILITY REPORT COST OF GREY STRUCTURE • • Area Provided per Foot: Aₛ = 1.92 in²/ft² • Conclusion: 1.92 in²/ft² > 0.345 in²/ft² required Transverse Reinforcement (Stirrups): • • Shear Reinforcement: • Vc = 0.17f'_xbd = 0.17 × 4,350 × 12 × 4 ≈ 5,377 lb • Vu = 74,700 lb • Av = (Vu - Vc) / (f_y × dₛ) = (74,700 - 5,377) / (60,000 × 0.75) ≈ 1.54 in²/ft Selected Shear Reinforcement: • #6 Stirrups Area: 0.44 in² per stirrup • Spacing Required: 1.54 / 0.44 ≈ 3.5 inches • Practical Spacing: Provide #6 stirrups at 12-inch spacing (overdesigned for adequate shear capacity) Final Slab Design: • Reinforcement: #10 bars at 12-inch spacing for longitudinal reinforcement; #6 stirrups at 12-inch spacing for shear • Concrete Cover: 1.5 inches to protect reinforcement • Slab Support: As per RCC frame design (Part 4) Design Summary for One Floor Slab • Slab Size: 33,615 sq ft • Slab Thickness: 6 inches (0.5 ft) • RCC Volume per Slab: 33,615 sq ft × 0.5 ft = 16,807.5 cft • Longitudinal Reinforcement: #10 bars at 12-inch spacing (1.92 in²/ft²) • Total Steel Area (Longitudinal): 1.92 in²/ft² × 33,615 ft² = 64,466.4 in² • Transverse Reinforcement: #6 stirrups at 12-inch spacing (adequate for shear) • Total Steel Area (Transverse): Adequate for shear capacity • Total Steel Reinforcement: 64,466.4 in² • Shear Reinforcement: #6 stirrups at 12-inch spacing • Load Capacity: Adequate for 2,792.75 tons/floor • Safety Margin: High Replicating Design for 28 Slabs Total Requirements for 28 Slabs • RCC Volume: Volume per Slab × Number of Slabs = 16,807.5 cft × 28 = 470,610 cft • Steel Reinforcement: 21 FEASIBILITY REPORT COST OF GREY STRUCTURE • Steel Area per Slab: 64,466.4 in² • Total Steel Area: 64,466.4 in² × 28 = 1,804,499.2 in² • Total Steel Weight: 1,804,499.2 in² × 0.75 lb/in² = 1,353,374.4 lb ≈ 676.69 tons Summary of Floor Slab Design • Slab Size: • Per Slab: 33,615 sq ft • Total for 28 Slabs: 33,615 sq ft × 28 = 941,220 sq ft • Slab Thickness: 6 inches (0.5 ft) • RCC Volume: • Per Slab: 16,807.5 cft • Total for 28 Slabs: 470,610 cft • Longitudinal Reinforcement: #10 bars at 12-inch spacing • Transverse Reinforcement: #6 stirrups at 12-inch spacing (adequate for all slabs) • Total Steel Area: • • Per Slab: 64,466.4 in² • Total for 28 Slabs: 1,804,499.2 in² Total Steel Weight: 676.69 tons Design Brickwork and Plaster Overview This section outlines the methodology and calculations for determining the brickwork volume and plaster area for TOWER-1, considering an arrangement of 19 apartments per floor. Accurate estimation of these non-structural elements ensures that the building's aesthetic and protective finishes are adequately planned and budgeted. The calculations account for internal walls supported by beams, aligning with the structural frame design for optimal load distribution. Design Parameters and Assumptions Building Specifications • Total Floors: 28 (including 3 basements) • Floors to Design: 25 (excluding basements and B-3) • Floor Area: 33,615 sq ft per floor • Building Shape: Square • Side Length: ≈183.34 ft • Floor Height: 11.39 ft 22 FEASIBILITY REPORT COST OF GREY STRUCTURE • • • Structural Layout: • Column Grid: 30 ft × 30 ft (7x7 grid with 49 columns per floor) • Beams per Floor: 84 beams (as designed in Part 4) Apartment Layout Assumptions: • Number of Apartments per Floor: 19 • Average Apartment Size: ≈1,770 sq ft/apartment • Apartment Arrangement: • Central Core: Contains elevators, staircases, and utilities. • Perimeter Apartments: Surround the central core, sharing walls with adjacent apartments and the core. Wall Specifications: • • External Walls: • Number: 4 (one on each side) • Length per Wall: 183.34 ft • Height per Floor: 11.39 ft • Thickness: • Supported by Beams: 9 inches (0.75 ft) • Not Supported by Beams: 4.5 inches (0.375 ft) Internal Load-Bearing Walls: • • • Total Number per Floor: 38 • Vertical Internal Walls: 19 walls • Horizontal Internal Walls: 19 walls • Length per Internal Wall: 30 ft • Height per Floor: 11.39 ft • Thickness: • Supported by Beams: 9 inches (0.75 ft) • Not Supported by Beams: 4.5 inches (0.375 ft) Material Properties: • Brick Dimensions: Standard Brick Size: 9 in × 4.5 in × 3 in • Mortar Joint Thickness: 0.5 in (vertically and horizontally) • Plaster Specifications: • Thickness: ½ inch on both sides of walls • Type: Standard cement plaster Assumptions: 23 FEASIBILITY REPORT COST OF GREY STRUCTURE • Wall Continuity: Walls are continuous across floors without openings (e.g., doors, windows) for simplification. • Uniform Wall Thickness: All internal and external walls maintain a uniform thickness based on support. • Plaster Application: Plaster is applied uniformly on both faces of all walls. • Internal Walls Supported by Beams: Ensures accurate load distribution and structural stability. Estimation of Doors and Windows for One Floor Number of Doors and Windows • • Apartment Doors: • Main Entrance Doors: 1 per apartment • Internal Doors: 2 per apartment • Calculation: 19 apartments × (1 + 2) = 57 doors Common Area Doors: • Corridor Doors: 2 • Elevator Doors: 2 • Staircase Doors: 2 • Calculation: 2 + 2 + 2 = 6 doors • Total Doors per Floor: 57 + 6 = 63 doors • Apartment Windows: • • • Average Windows per Apartment: 2 • Calculation: 19 apartments × 2 = 38 windows Common Area Windows: • Corridor/Elevator/Staircase Windows: 6 • Calculation: 6 windows Total Windows per Floor: 38 + 6 = 44 windows Dimensions of Doors and Windows • Doors: 3 ft (width) × 7 ft (height) • Windows: 3 ft (width) × 4 ft (height) Total Area of Doors and Windows • Area per Door: Aₓ = 3 ft × 7 ft = 21 sq ft • Total Door Area: 63 doors × 21 sq ft = 1,323 sq ft 24 FEASIBILITY REPORT COST OF GREY STRUCTURE • Area per Window: Aᵥ = 3 ft × 4 ft = 12 sq ft • Total Window Area: 44 windows × 12 sq ft = 528 sq ft • Total Openings Area: Total Door Area + Total Window Area = 1,323 + 528 = 1,851 sq ft Brickwork Volume Calculation for One Floor External Brickwork • Supported Walls (3 walls): 183.34 ft × 11.39 ft × 0.75 ft = 1,565.56 cft per wall • Unsupported Wall (1 wall): 183.34 ft × 11.39 ft × 0.375 ft = 782.78 cft • Total External Brickwork Volume: (3 × 1,565.56) + (1 × 782.78) = 4,696.68 + 782.78 = 5,479.46 cft Internal Brickwork • Supported Walls (34 walls): 30 ft × 11.39 ft × 0.75 ft = 256.03 cft per wall • Unsupported Walls (4 walls): 30 ft × 11.39 ft × 0.375 ft = 128.02 cft per wall • Total Internal Brickwork Volume: (34 × 256.03) + (4 × 128.02) = 8,704.02 + 512.08 = 9,216.10 cft Total Brickwork Volume for One Floor • Total Brickwork Volume: External Volume + Internal Volume = 5,479.46 + 9,216.10 = 14,695.56 cft Plaster Area Calculation for One Floor External Plaster Area • Plaster on Both Sides: Plaster Thickness per Side = 0.5 in • Supported Walls (3 walls): 183.34 ft × 11.39 ft × 2 sides = 4,172.3 sq ft per wall • Unsupported Wall (1 wall): 183.34 ft × 11.39 ft × 2 sides = 4,172.3 sq ft • Total External Plaster Area: 4 walls × 4,172.3 sq ft = 16,689.2 sq ft Internal Plaster Area • Plaster on Both Sides: Plaster Thickness per Side = 0.5 in 25 FEASIBILITY REPORT COST OF GREY STRUCTURE • Supported Walls (34 walls): 30 ft × 11.39 ft × 2 sides = 681.4 sq ft per wall • Unsupported Walls (4 walls): 30 ft × 11.39 ft × 2 sides = 681.4 sq ft per wall • Total Internal Plaster Area: 38 walls × 681.4 sq ft = 25,870.8 sq ft Total Plaster Area for One Floor • Total Plaster Area: External Plaster Area + Internal Plaster Area = 16,689.2 + 25,870.8 = 42,560 sq ft Adjusting Brickwork Volume for Openings Total Area of Doors and Windows • Total Doors: 63 doors • Total Windows: 44 windows • Total Openings Area: (63 × 21 sq ft) + (44 × 12 sq ft) = 1,323 + 528 = 1,851 sq ft Adjusted Brickwork Area • Total Wall Area: • External Walls: 4 × 183.34 ft × 11.39 ft ≈ 8,332.64 sq ft • Internal Walls: 38 × 30 ft × 11.39 ft ≈ 12,941.4 sq ft • Total Wall Area: 8,332.64 + 12,941.4 = 21,274.04 sq ft • Net Wall Area after Subtracting Openings: Total Wall Area - Total Openings Area = 21,274.04 - 1,851 = 19,423.04 sq ft • Brickwork Volume Adjustment: Adjusted Brickwork Volume = Total Brickwork Volume × (Net Wall Area / Total Wall Area) Adjusted Brickwork Volume = 14,695.56 × (19,423.04 / 21,274.04) ≈ 14,695.56 × 0.912 ≈ 13,423.12 cft Final Adjusted Brickwork Volume and Plaster Area for One Floor External Brickwork • Supported Walls (3 walls): 183.34 ft × 11.39 ft × 9 in = 4,696.68 cft per wall • Unsupported Wall (1 wall): 183.34 ft × 11.39 ft × 4.5 in = 782.78 cft • Total External Brickwork: 5,479.46 cft Internal Brickwork • Supported Walls (34 walls): 30 ft × 11.39 ft × 9 in = 8,704.02 cft per wall 26 FEASIBILITY REPORT COST OF GREY STRUCTURE • Unsupported Walls (4 walls): 30 ft × 11.39 ft × 4.5 in = 512.08 cft • Total Internal Brickwork: 9,216.10 cft Total Brickwork Volume • External + Internal: 5,479.46 + 9,216.10 = 14,695.56 cft Openings Area • Doors and Windows: 63 doors + 44 windows = 1,851 sq ft Net Wall Area • Total Wall Area - Openings Area: 19,423.04 sq ft Adjusted Brickwork Volume • Based on Net Wall Area: 13,423.12 cft External Plaster Area • 4 walls × 183.34 ft × 11.39 ft × 2 sides: 16,689.2 sq ft Internal Plaster Area • 38 walls × 30 ft × 11.39 ft × 2 sides: 25,870.8 sq ft Total Plaster Area • External + Internal: 42,560 sq ft Verification and Validation Unit Consistency • Description: Ensure all measurements are consistently in feet, inches, cubic feet (cft), and square feet (sq ft). • Details: All calculations maintain consistent units for accuracy. Reasonableness of Results • Brickwork Volume: 13,423.12 cft adjusted for openings is reasonable for a high-rise building with 19 apartments per floor. • Plaster Area: 42,560 sq ft ensures complete coverage of all wall surfaces with adequate thickness. • Conclusion: The results align with typical values for similar building projects, indicating plausibility. Structural and Aesthetic Safety • Brickwork: Adequate volume ensures structural stability and aesthetic appeal. • Plaster: Proper thickness on both sides ensures durability, weather resistance, and smooth finishes. • Conclusion: The design meets both structural and aesthetic requirements for a highrise building. 27 FEASIBILITY REPORT COST OF GREY STRUCTURE Compliance with Standards • Description: Designs adhere to standard masonry and plastering practices. • Details: Ensure safety and quality as per relevant codes. • Conclusion: Compliance with industry standards (e.g., ACI 318, ASCE 7) is maintained, ensuring safety and quality. Summary of Adjusted Brickwork and Plaster for One Floor • • External Brickwork: • 3 walls × 183.34 ft × 11.39 ft × 9 in = 4,696.68 cft • 1 wall × 183.34 ft × 11.39 ft × 4.5 in = 782.78 cft • Total External Brickwork: 5,479.46 cft Internal Brickwork: • 34 walls × 30 ft × 11.39 ft × 9 in = 8,704.02 cft • 4 walls × 30 ft × 11.39 ft × 4.5 in = 512.08 cft • Total Internal Brickwork: 9,216.10 cft • Total Brickwork Volume: External + Internal = 5,479.46 + 9,216.10 = 14,695.56 cft • Openings Area: 63 doors + 44 windows = 1,851 sq ft • Net Wall Area: Total Wall Area - Openings Area = 19,423.04 sq ft • Adjusted Brickwork Volume: Based on Net Wall Area = 13,423.12 cft • External Plaster Area: 4 walls × 183.34 ft × 11.39 ft × 2 sides = 16,689.2 sq ft • Internal Plaster Area: 38 walls × 30 ft × 11.39 ft × 2 sides = 25,870.8 sq ft • Total Plaster Area: External + Internal = 42,560 sq ft Safety Factors and Adjustments To ensure the utmost structural stability and safety of TOWER-1, all previously derived quantities have been increased by safety factors ranging from 1.25 to 3.0. This deliberate augmentation accounts for potential unforeseen variations in material properties, construction practices, and loading conditions. By applying these safety factors, the design not only meets but exceeds standard industry requirements, providing a robust margin that enhances the building's resilience against structural stresses, ensures longevity, and maintains compliance with stringent safety standards. These adjustments are critical in 28 FEASIBILITY REPORT COST OF GREY STRUCTURE high-rise construction, where the integrity of non-structural elements like brickwork and plaster plays a vital role in the overall performance and aesthetic appeal of the building. 7. Final Quantities and Cost Estimates The following table provides a detailed breakdown of the final quantities and cost estimates for TOWER-1, meticulously prepared by the Quantity Surveyor (QS). This comprehensive analysis encompasses all major construction activities, including earthwork excavation, transportation of materials, fabrication of reinforced concrete piles, brickwork, plastering, and termite proofing, among others. Each entry outlines the description of work, unit of measurement, labor costs, composite costs, quantities required, and the associated total costs. The table accounts for project contingencies and applicable taxes, culminating in the grand total cost. The estimates have been adjusted with safety factors ranging from 1.25 to 3.0 to ensure structural stability, accommodate unforeseen variations, and adhere to stringent industry standards. This meticulous cost assessment not only facilitates effective budget planning and financial management but also underscores the project's commitment to quality and safety, ensuring the successful and sustainable completion of TOWER-1. Final Quantities and Cost Estimates Sr. No Description 7 Earthwork excavation in open cutting upto 5'-0" (1.5 m) depth for storm water channels, drains, sullage drains in open areas, roads, streets, lanes, including under pinning of walls and shoring to protect existing works, shuttering and timbering the trenches, dressed to designed level and dimensions, trimming, removal of surface water from trenches, back filling and surplus excavated material disposed of and dressed within 50 ft. (15 m) lead:i) ordinary 8 Unit of M/ment Labour Composite 1000 Cft. 13,207.90 13,366.90 Earthwork excavation in open cutting 5.01 ft. (1.5 m) to 17.1 to 10.0 ft. (3.0 mm) depth for storm water channels, drains, 17.5 sullage drains in open areas, roads, streets, lanes, including under pinning of walls and shoring to protect existing works, shuttering and timbering the trenches, dressed to designed level and dimensions, Quantity 168.0 - 29 Cost 2,246,118 - FEASIBILITY REPORT COST OF GREY STRUCTURE Sr. No Description Unit of M/ment Labour Composite Quantity Cost 1000 Cft. 14,322.00 14,638.20 1,182.0 17,301,828 trimming, removal of surface water from trenches, back filling and surplus excavated material disposed of and dressed within 100 ft. (30 m) lead:i) ordinary 17 7 Transportation of earth all types when the total distance, including the lead covered in the item of work, is more than the lead covered in the item of 1000 ft. (300 m) a) upto ¼ mile (400 m). 1000 Cft. 6,678.00 b) for every 330 ft. (100 m) additional lead or part thereof, beyond ¼ mile (400 m) upto one mile. (1.6 Km.) 1000 Cft. 69.85 c) for every ¼ mile (400 m) additional lead or part thereof, beyond one mile (1.6 Km.) upto 5 mile (8 Km). 1000 Cft. 385.75 d) for every ½ mile (800 m) additional lead or part thereof, beyond 5 miles (8 Km). 1000 Cft. 367.7 Providing and casting in situ bored reinforced concrete piles using Ordinary portland cement / Sulphate resisting cement or as may be required, incuding screening, washing of aggregates, mixing of constituents using batching plant, Transportation by Transit Mixer, Pouring in the required proportion to achieve a nominal cylinderical strength in the field as per ACI-214, with the specified consistency. i/c the cost of labour, boring, equipment/machinery, plateform (except the cost of steel reinforcement, its labour for bending and laying in position and boat plateform etc. which will be paid separately) excluding the cost of admixture as approved and directed by the Engineer Incharge In ordinary soil - - 1,350.0 9,015,300 1,350.0 1,350.0 520,763 1,350.0 - 30 94,298 496,395 - FEASIBILITY REPORT COST OF GREY STRUCTURE Sr. No Description Unit of M/ment Labour Composite Quantity Cost - - (b) 4000 PSI (iv) 0.61 m / 24 inch 11 1,568.15 3,309.50 Fabrication of mild steel reinforcement deformed bar cage of specified yield strength for R.C.C bored piles including cutting bending, lowering of cage with crane in position, welding and fastening, including the cost of binding wire, Crane machine (also includes removal of rust from the bars) as approved and directed by the Engineer Incharge. ii) Grade-60 12 Per Rft. 3,600.0 - Per Cwt. 168.45 16,124.05 Fabrication of mild steel reinforcement for cement concrete, including cutting, bending, laying in position, making joints and fastenings, including cost of binding wire and labour charges for binding of steel reinforcement (also includes removal of rust from bars):- 11,914,200 - 609.8 9,831,812 - - - - b) Deformed bars (ii) (Grade-60) Per Cwt. 1,080.75 18,222.30 45 Spraying termite proofing by using liquid FMC/ Biflex/ Terminex Exin/ Ms Hextar or equivalent @ specified suspension concenterate (SC), Mixing Ability-HEXTAR with Ratio (1:250) = 540 Sft or equivalent approved liquid applying with shower and certificate will be provided by the contractor for 10-years complete in all respect .as approved by the Engineer Incharge Per Sft 1.75 12.55 9 Placing, compacting, finishing and curing of concrete using Ordinary Portland Cement / Sulphate resisting cement / Slag cement as may be required; including screening, washing of aggregates and mixing of 21,100.0 58,650.0 - 31 384,490,348 736,058 - FEASIBILITY REPORT COST OF GREY STRUCTURE Sr. No Description Unit of M/ment Labour Composite Quantity Cost - - 1,973,743.3 1,790,185,191 - - - - 389,097.0 338,144,748 - - constituents using batching plant, Transportation by transit mixer, pouring with pump in the required proportions to achieve a nominal cylindrical strength in the field as per ACI 214, with the specified consistency. i/c the cost of shuttering, compaction with Viberator, excluding the cost of Admixture, as approved and directed by the Engineer Incharge. (a) Reinforced cement concrete in roof slab, beams, columns lintels, girders and other structural members laid in situ or precast laid in position, or prestressed members cast in situ, complete in all respects: (iii) 5000 PSI Per Cft 159.65 907 (b) Retaining/ Shear walls laid in situ or precast laid in position, or prestressed members cast ( Formwork on both sides) (ii) More Than 9"" Thick iii) 5000 PSI Per Cft 153.3 869.05 ( c) Substructure (Foundations, Raft, Strip and Footing Beams) (iii) 5000 PSI 5 Per Cft 86.8 763.6 Pacca brick work in ground floor:- 100845 77,005,242 - - - - i) cement, sand mortar:- Ratio 1:5 6 100Cft. 11,083.80 Add extra labour on item No. 5 for brickwork in 43,435.80 7.3 - 319,157 - i) first floor 100Cft. 1,993.20 ii) second floor 100Cft. 3,729.00 7.3 27,400 iii) third floor 100Cft. 6,956.40 7.3 51,114 iv) fourth & subsequent floors 100Cft. 9,306.00 154.3 1,435,947 32 7.3 14,646 FEASIBILITY REPORT COST OF GREY STRUCTURE Sr. No Description 11 Cement plaster 1:4 upto 20' (6.00 m) height:b) ½" (13 mm) thick Unit of M/ment 100 Sft. Labour Composite 3,352.80 4,524.00 Quantity Cost - 532.0 Total= Project Contingency @5% Sub Total= 2,406,768 2,646,237,331 132,311,867 2,778,549,198 Taxes @ 16% 444,567,872 Grand Total= 3,223,117,069 Total Covered Area (Sq Ft)= Cost of Grey Structure per Sq FT= 941,220 3,424 6. Recommendations To ensure the successful and cost-effective execution of TOWER-1, several strategic measures are recommended. Cost optimization strategies should be employed to maximize budget efficiency without compromising quality. This includes negotiating with contractors to secure competitive pricing and favorable terms, as well as bulk purchasing of materials to take advantage of volume discounts. Adopting prefabrication techniques can significantly reduce on-site labor costs and construction time, while schedule improvements and phase overlapping will enhance project timelines, allowing for concurrent activities that minimize delays. Enhancing the workforce through targeted training and better resource allocation will improve productivity and workmanship. Additionally, implementing design enhancements and utilizing modular elements can streamline construction processes, reduce waste, and allow for greater flexibility in building design. Finally, considering material upgrades ensures that higher-quality materials are used where necessary, enhancing the overall durability and aesthetic appeal of the building. These recommendations collectively aim to optimize costs, improve efficiency, and ensure the structural stability and longevity of TOWER-1, thereby aligning with both financial objectives and high construction standards. 7. Conclusion Feasibility Confirmation The comprehensive analysis and detailed calculations presented in this feasibility report affirm that the construction of TOWER-1 is both viable and economically sound. The structural designs, encompassing RCC frames, floor slabs, brickwork, and plastering, have been meticulously developed to ensure optimal performance, durability, and aesthetic 33 FEASIBILITY REPORT COST OF GREY STRUCTURE appeal. The cost estimates, carefully prepared by the Quantity Surveyor, demonstrate a well-balanced budget that aligns with industry standards while incorporating necessary safety factors to guarantee structural stability. Additionally, the recommended co st optimization strategies, such as bulk purchasing and prefabrication, further enhance the project's financial feasibility and operational efficiency. Overall, TOWER-1 is poised to meet its structural and financial objectives, promising a successful and sustainable development. Disclaimer This feasibility report has been prepared based on the information and assumptions available up to the date of submission. While every effort has been made to ensure the accuracy and reliability of the data and calculations provided, unforeseen factors and variations in material properties, labor costs, and market conditions may impact the final outcomes. This report is intended solely for the use of project stakeholders and should not be distributed or relied upon by any other parties without prior authorization. 34