Identify the locations of the worst case values

Assignment Help Civil Engineering
Reference no: EM13871869

Assignment is to take wind tunnel pressure data and develop ASCE-­-7-­-equivalent external pressure coefficients, and then to compare the results with those in ASCE 7-­-10. The steps to achieve this, and the data to be used, are described below.

The first contains pressure data from the roof of a wind tunnel model replicating the TTU-­-WERFL building at a scale of 1/50. This building has an eave height of 13 ft and a gable roof slope of 1/48, which can be considered as flat. Time histories of pressure coefficients for 16 taps located near the corner of the roof are included for each of 3 wind directions, viz., 0o, 45o and 90o. The time history data for each pressure tap are provided as a column of data in the sheets, so there are 16 columns in each sheet. The tap numbers and tap locations are provided on another sheet within the file and are given in full-­-scale dimensions. The pressure coefficients are referenced to the mean wind speed at the roof height. The second file provides the mean wind speed and turbulence intensities, with the elevation, z, given in full-­-scale dimensions.

Steps:

1. We won't look at all possible areas with this array of taps. Rather, we will look at a subset of them. In particular, consider the following three areas: (i) 16 taps individually, (ii) 4 square areas made up of the (non-­-overlapping) sets of 2 x 2 taps and (iii) 1 area made up of all 16 taps (4 x 4 taps). Determine the time histories of the area-­-averaged pressure coefficients.

2. Divide the resulting time histories into 10 equal segments and identify the median peak value for each area and for each wind direction. Identify the locations of the worst-­-case values and wind directions.

3. Convert the peak, area-­-averaged, pressure coefficients into ASCE 7 GCp values, i.e., a reference velocity of 3-­-sec gust speed at 10m. Make sure to carefully describe your velocity conversion assumptions. Plot your resulting peak values (all of them) versus area, using the format of ASCE 7-­-10 (i.e., GCp versus log of area). Draw a curve on the plot that would represent your choice for the code based on this data.

4. Discuss how your results of this TTU-­-WERFL building compare to those in ASCE 7-­-10. Comment on the how uncertainties and assumptions in your analysis may affect the results.

Reference no: EM13871869

Questions Cloud

Cdc health disparities affecting minorities publication : Pick two of the statistics that are discussed and make suggestions for how those in your chosen field (e.g. School Psychology, Counseling, Educational Psychology, etc.) can contribute to community efforts to reduce the disparities.
What are the six determinants of a currency option value : In what sense is a currency forward contract a combination of a put and a call? What are the six determinants of a currency option value?
Prepare the disclosures and/or journal entries farmers : On December 4, 2010, Dan Johnson, delivery truck driver for Farmers Products, Inc., ran a stop sign and collided with another vehicle.
Volume of fresh watervolume of salt water displaced : (a) What is the weight of the water this boat displaces when floating in salt water of density 1.10 x 103 kg/m3? (b) What is the difference between the volume of fresh water displaced and the volume of salt water displaced?
Identify the locations of the worst case values : Divide the resulting time histories into 10 equal segments and identify the median peak value for each area and for each wind direction. Identify the locations of the worst-­-case values and wind directions.
What is difference between a call option and a put option : What is the difference between a call option and a put option? What are the differences between exchange-traded and OTC currency options?
What is difference between a call option and a put option : What is the difference between a call option and a put option? What are the differences between exchange-traded and OTC currency options?
What mass of lead is needed if the lead is attached to : A block of wood has a mass of 3.67 kg and a density of 600 kg/m3. It is to be loaded with lead (1.14 x 104 kg/m3) so that it will float in water with 0.900 of its volume submerged. What mass of lead is needed if the lead is attached to?
The ramden company''s balance sheets : On May 1, 2010, the Ramden Company issues 13% serial bonds with a face value of $2 million.

Reviews

Write a Review

 

Civil Engineering Questions & Answers

  Determine what is the maximum intensity

During a 60 minute storm the following amounts of rain fell during successive 15 minute intervals: 33mm, 23mm, 15mm, and 5mm. What is the maximum intensity

  What is the annual worth of this investment

Carlisle Company has been cited and must invest in equipment to reduce stack emissions or face EPA fines of $18,500 per year. An emission reduction filter will cost $75,000 and have an expected life of 5 years. Carlisles MARR is 10 percent/year.

  Determine the largest distance x that the stream can reach

A nozzle discharges a stream of water with an initial velocity v0 of 50 ft/s into the end of a horizontal pipe of inside diameter d=5ft. determine the largest distance x that the stream can reach.

  Determine the magnitude of the largest elastic load p

the outer diameter of this sleeve is 20 mm, and its inner diameter is 10 mm. if the yield stress for the steel is (sy)st = 640 MPa, and for the bronze (sy)br = 520 MPa determine the magnitude of the largest elastic load P

  Explain why a clay once having been fired at an elevated

The thermal conductivity of a single-crystal ceramic specimen is slightly greater than a polycrystalline one of the same material. Why is this so?

  Determine the magnitudes of the other forces

A welded connection is in equilibrium under the action of thefour forces shown. Knowing that Fa=8kn and Fb= 16kN, determine the magnitudes of the other forces.

  What is the density of moist air with a relative humidity

What is the density in kg/m3 of: (a) dry air at 25 degrees C and a pressure of 1,000 millibars; (b) moist air with a relative humidity of 80% at the same temperature and pressure

  Find the uniform flow depth of concrete trapezoidal channel

Find the uniform flow depth (in feet) of a concrete trapezoidal channel with a bottom width of 30 ft. and side slopes of 2:1. The channel is laid at a slope of 0.05% and carries a design discharge of 1000 cfs.

  What is the estimated collection efficiency at 250degree f

Our ESP is collecting 95% of the particles in our exhaust stream. We are under pressure to improve its performance. It has been suggested that if we were to cool the inlet gas from the present 600°F to 250°F

  What do you understand by the term durability compared to

1 what do you understand by the term durability? compared to other considerationsnbsphow much importance should be

  Determine the angle theta for equilibrium from two springs

The 10-lb lamp fixture is suspended from two springs, each having an unstretcfhed length of 4 ft and stiffness of k=5lb/ft. Determine the angle theta for equilibrium.

  What stress on the structure will lead to its failure

A structure is designed with a factor of safety of 5.25 psi. If the allowable stress of the structure is 3000 psi. What stress on the structure will lead to its failure?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd