Engineering, 14.04.2020 18:34 nestergurl101
Concrete is required for a bridge deck in Chicago. A specified compressive strength, f’c, of 4,500 psi is required at 28 days using Type I cement. The design calls for a minimum of 2.5 in. of concrete cover over the reinforcing steel. The minimum spacing between steel reinforcement is 5 in. The concrete should be designed to overcome all the environmental conditions encountered in Chicago. Refer to Textbook Chapter 12 of PCA – Design and Control of Concrete Mixes. Use the absolute volume method to design the concrete mix per 1 cubic yard. The materials
Answers: 1
Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
Engineering, 04.07.2019 18:20
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
Concrete is required for a bridge deck in Chicago. A specified compressive strength, f’c, of 4,500 p...
Mathematics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
English, 04.12.2020 22:10
Chemistry, 04.12.2020 22:10
Physics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
Physics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
Mathematics, 04.12.2020 22:10
History, 04.12.2020 22:10