Allow 625g per person. Roast for 15 minutes per 450g. Roast at 230Â°C/fan210Â°C/gas 8 for the first 20 minutes, then decrease the oven temperature to 180Â°C/ fan160Â°C/gas 4 for the remaining cooking time. Allow 575g per person.
the 5,000 psi is the amount of pressure the concrete can withstand  before it will crush. it has nothing to do with water proofing. to  find out if you need water proofing y â¦ ou need to know how poores the  concrete is and how quickly the ground out side will drain water.
Making the world better, one answer at a time. Concrete strengths are customarily denominated in psi (pounds per square inch) in the imperial system and in MPa's (megapascals) in metric.These are units of pressure.agged Premixed Concrete will achieve an mpa strength of around 20 mpa and is usually expected to reach this at 28 days. The Rapid Set Premix Bagged products are only good â¦ for about for about 5 mpa.