Top new questions this week:
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I understand that a 2 kW electric heater will use 2 kW of electricity and output 2 kW of heat (apart from small losses of energy as infra red, vibration etc.. but let’s exclude those for this example …
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I was looking through NASA’s document for “Installation Torque Tables for Noncritical Applications” and noticed their formula for the pullout load of a fastener on a certain material. It …
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The task is to transfer hydrogen (high pressure gas > 400 bars) from offshore platform to land. To do so we have to use flexible pipes but for high pressure and high flow rate I’m afraid we can’t …
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I’ve heard that cars parked on an incline should leave the car in either 1st gear or reverse, because this supposedly provides the most engine resistance should the wheels start turning. But my …
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Greatest hits from previous weeks:
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Could anyone please explain what is the difference between active and passive earth pressure when we talk about weight retaining walls. Both are lateral pressure exerted by the soil on a retaining …
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for this question: “What is the difference between strength, hardness and toughness in materials?” i have searched and have found these following definitions Strength refers to resistance to …
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Some building are really tall, if you flush the toilet and the contents go into a pipe and straight down, there could be a lot of energy, potentially enough to cause harm to the sewer pipe at the end …
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Why is a bridge designed like this? The depth of the section at pillars is more than the depth at middle. If I model this as a simply supported beam having load at mid span then the bending moment …
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Is there a method for plating steel with stainless steel? If so, is it chemical, electrical, or electrochemical? I did a quick search on the internet but was unable to find a service. I’m …
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If a water pipe is 15 mm diameter and the water pressure is 3 bar, assuming the pipe is open ended, is it possible to calculate the flow rate or water velocity in the pipe? Most of the calculations I …
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I have spent two days searching the web but haven’t found out how to define the following parameters for weep holes in retaining walls. horizontal and vertical (if staggered situation) spacing …
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