Activity 3.4 Sketchtimating Endeavor Goal: To sketch the floor plan of a house and make a rough estimate of the cost of building the house Role: Contractor Audience: Couple Situation: A young couple has just bought a 9 m by 9 m rectangular lot. They would like to build a one-storey house with 49-square-meter floor area so that there is adequate outdoor space left for vehicle and gardening. You are one of the contractors asked to design and estimate the cost of their house with a master's bedroom, one guest room, kitchen, bathroom, and a non-separate living room area and dining room area. How should the parts of the house be arranged and what are their dimensions? if they only want you to concrete the outside walls and use jalousies for the windows, what is the rough cost estimate in building the house? Product: floor plan of the house, cost estimate of building the house, and presentation of the floor plan and cost tandards: accuracy, creativity, resourcefulness, mathematical justification estimate Rubric​
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Make a drawing of the lot
Make a drawing of the house, and cut it out. Position it so that the requirements are met.
If necessary, cut the drawing of the house into separate rooms, so they can be rearranged to better fit the lot.
To sketch the floor plan of the house and make a rough estimate of the cost of building the house, you will need to follow these steps:
1. Determine the dimensions of each room:
- Master bedroom: The master bedroom usually has an area of around 15-20 square meters, so you can allocate a space of 4 m x 5 m (20 square meters) for this room.
- Guest room: The guest room can be smaller than the master bedroom, so you can allocate a space of 3 m x 3 m (9 square meters) for this room.
- Kitchen: A small kitchen can have an area of around 6-8 square meters, so you can allocate a space of 4 m x 2 m (8 square meters) for the kitchen.
- Bathroom: The size of a standard bathroom is usually around 2-4 square meters, so you can allocate a space of 2 m x 2 m (4 square meters) for the bathroom.
- Living room and dining room: For combined living and dining spaces, you can allocate a space of 6 m x 6 m (36 square meters).
2. Arrange the rooms within the floor plan:
- Place the master bedroom and guest room adjacent to each other, either side by side or one above the other.
- Place the kitchen and bathroom close to each other, preferably with a wall separating them.
- Allocate the remaining space for the living room and dining room, making sure to leave adequate outdoor space for vehicles and gardening.
3. Determine the cost estimate for the construction:
- Since the couple wants the outside walls to be concreted and jalousies for the windows, you won't need to consider additional costs for materials such as bricks or glass windows.
- Calculate the cost of concreting the outside walls by measuring the total perimeter of the house and multiplying it by the cost per unit length of concreting.
- Estimate the cost of jalousies by measuring the total area of the windows and multiplying it by the cost per square meter of jalousies.
- Add the cost of labor, plumbing, electrical work, and other construction expenses to get the total estimated cost.
4. Present the floor plan and cost estimate:
- Create a professional floor plan using design software or by hand-drawing it, making sure to label each room.
- List the dimensions of each room and the total floor area.
- Display the cost estimate breakdown, including the cost of concreting the outside walls and the jalousies, as well as any additional costs.
- Use clear and organized visuals to present the information, and provide a detailed explanation of the cost estimation process and assumptions made.
Remember to be accurate in your measurements, creative in your design, resourceful in finding cost-effective solutions, and justify your mathematical calculations for the cost estimate.