8) WHAT IS ALKALI-SILICA REACTIVITY (ASR)? 9) HOW CAN "ASR" BE AVOIDED?

type please

How do HVAC system components affect the work of an interior designer?

Given the following u-k relationship, u = 30 ln (300/k) mi/h. Find the jam concentration, the capacity of the roadway, and the speed of the shock wave between conditions u_a = 60 mi/h and u_b = 40 mi/h.

Please write out the equations used before plugging in the numbers. Thanks!

What are the interior design implications regarding the heating and cooling engineering system?

Define Give detention time and give reasons why wastewater needs to stay in the

clarifier longer. What is the implications having the tank (clarifier) smaller for the

amount of flow?

4 marks

b. In the oxidation of ammonia by nitrifying bacteria, considerable quantities of oxygen

can be utilised, which can represent a significant fraction of the total oxygen demand of

a wastewater. Name these bacteria (2) and give equations to illustrate the process

8 Mark

A hydraulic jump is formed in a rectangular channel 6.5 ft wide. The conjugate depths are 0.5 ft and 4.0 ft respectively. Calculate: a. specific discharge, b. energy lost in the jump, c. critical depth, minimum specific energy, d. Horsepower lost, e. Length of the jump and f. Classify the Jump.

How does the aggregate strength affect normal concrete strength?

A beam extends over a span of 7.3 m and an overhang (cantilever) to the right of the right support of 3 m (that is, the total length of the beam is 10.3 m.) The beam supports a service dead load of 18 t/m that does not include self-weight, and a service live load of 10 t/m. Assume the connection between the beam and the support is a simple pin or roller.

. If self-weight is 1.512 , the height(h) =90cm , width b=70 cm , dt= 83.5

Use fc' : 28 MPa, fy : 420 MPa

design the beam for shear including self weight

How many studs are needed to construct 100 feet of a 2 x 4 stud wall? The wall has one 8-footwide window, four 4-foot-wide windows, two 36-inch-wide doors, one 30-inch-wide door, four corners, two intersections, and eight hold downs located at corners. The stud spacing is 16 inches on center. Allow for two additional studs for each corner, intersection, or doorway; six additional studs for each window less than 6 feet in length; eight additional studs for each window 6 feet or more in width; and one additional stud for each hold down located at a corner

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1. For the quarter scale tractor team: Student A is 94% reliable at CAD, 90% reliable at Excel, and 82% at Word; Student B is 88% reliable at CAD, 88% reliable at Excel, and 88% at Word; and Student C is 84% reliable at CAD, 86% Excel, and 96% at Word. Which of the following is more reliable: Student A draws the tractor with CAD while the other two do calculations with Excel weld and write the final report with Word, or Student B does calculations with Excel for the tractor while the other two draw the tractor with CAD and write the final report with Word, or if student C writes the final report with Word while the other two draw the tractor with CAD and do calculations with Excel? Specify the reliabilities for each scenario. What is the reliability, if they all participate in each step?

The primary effluent is to be treated by two parallel trains of the complete mix activated sludge process. The average daily wastewater design flows of 2.0 MGD and assume that the primary sedimentation process removes 60% of the suspended solids and 40% of the BOD5 of the raw sewage. The following data are given:

• Plant effluent BOD₅ of 8 mg/L

• Biomass yield of 0.55 kg biomass / kg BOD

• Endogenous decay rate (kd) = 0.04 day^-1

• Solids Retention Time (θ_C) = 8 days

• MLVSS concentration in the aeration tank of 3000 mg/L

• Waste and recycle solids concentration of 12,000 mg/L   

a) Determine the aeration tank volume in cubic meters.

b) Determine the mass and volumetric flow rates (kg/day and m³ day) of wasted sludge.

c) Determine the return (recycle) flow rate in cubic meters per day (and in MGD).

d) Determine the volumetric BOD loading to the aeration tank in lb BOD per 1000ft³.  

e) Determine the food to microorganism ratio (F/M) for the aeration tank in kg BOD/day/kg

f) Determine the design hydraulic detention time (θ) in hours.

1- How does the bandage contact area change with the axle load? Show it by drawing.
2- Draw the stresses created by a tandem axle on the superstructure layers by drawing them.

Explain the way to construct pad footing step by step with sketch.

1) Setting Out

2) Excavation Works

3) Install Formwork

4) Install Reinforcement

5) Inspection of workdone before concreting

6) Concreting work

Starting from the linearized, perturbed, stability equations of a normal mode for nearly parallel viscous flows, apply Squire’s transformation and derive the stability equations.

A 1000-ft vertical curve connects a -1% grade to a -3.5% grade. If the vertical tangents intersect at sta. 38+60.24 and elevation 1,400.13 ft, develop an Excel spreadsheet to calculate the elevations of the grade line at each station from sta. 31+00 to 45+00. Include the elevations of the PVC and PVT.