Make a flowchart that summarizes what you learned about concrete. It should include the following information about the inputs, outputs, and processes used to make concrete: The natural resources used to make cement and concrete and how they are obtained
The ingredients and processes used to make cement
The ingredients and processes used to make concrete
Any outputs other than cement and concrete that you learned about
The structures concrete is used to build as final outputs
Comments about the positive and negative impacts of any inputs, outputs, or processes

Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c