How do I calculate how much gypsum I need? To calculate the amount of gypsum needed for your soil, you should consider the soil type, its current pH level, and the desired pH level. A rough estimation is to use 20 to 30 pounds of gypsum per 1,000 square feet for typical soil improvement. Key Takeaways. The national average cost to build a house is about $329,000, not including land. It costs on average 150 per square foot. Lot costs range between $3,000 to $150,000, with wide Thermal conductivity (k) is the measure of a material’s ability to transmit heat, and is expressed as heat flow in watts per square metre of surface area for a temperature difference of 1°C per metre thickness and is expressed as W/m°k. Generally, denser materials have high thermal conductivity and are inefficient thermal insulants. The associated costs of drywall installation include the cost of installation, cost of material, and cost of labour. Installation. The cost of installation for your drywall on average ranges from $1.50-$2.00 per square foot. The cost per square foot including materials and labour can range from $40-$60 on average. Material .

how much gypsum per square metre