Aprecast t beam is to be used as a bridge over a small roadway. concrete dimensions are b = 48 in., b w = 16 in., h f = 5 in., and h = 25 in. the effec-tive depth d = 20 in. concrete and steel strengths are 6000 psi and 60,000 psi, respectively. using approximately one-half the maximum tensile reinforce-ment permitted by the aci code (select the actual size of bar and number to be used), determine the design moment capacity of the girder. if the beam is used on a 30 ft simple span, and if in addition to its own weight it must support rail-ings, curbs, and suspended loads totaling 0.475 kipyft, what uniform service live load limit should be posted?

In three to four sentences, explain the effect of a price ceiling on the quantity of a good and who this intervention intends to assist

Identify whether the statements are true or false by dragging and dropping the appropriate term into the bin provided. long-run economic growth is unlikely to be sustainable because of finite natural resources. in the modern economy, countries that possess few domestic natural resources essentially have no chance to develop economically. finding alternatives to natural resources will be very important to long-term economic growth. in the modern economy, human and physical capital are generally less important in productivity than natural resources. in the 19th century, countries with the highest per capita gdp were nearly always abundant in minerals and productive farming land.

Your sister turned 35 today, and she is planning to save $60,000 per year for retirement, with the first deposit to be made one year from today. she will invest in a mutual fund that's expected to provide a return of 7.5% per year. she plans to retire 30 years from today, when she turns 65, and she expects to live for 25 years after retirement, to age 90. under these assumptions, how much can she spend each year after she retires? her first withdrawal will be made at the end of her first retirement year.