Year |
Pi(cm) |
Year |
Pi(cm) |
1999 |
44.2 |
2010 |
39.2 |
2000 |
47.6 |
2011 |
38.3 |
2001 |
38.5 |
2012 |
46.1 |
2003 |
35.8 |
2013 |
33.1 |
2004 |
40.2 |
2014 |
35.0 |
2005 |
41.2 |
2015 |
39.3 |
2006 |
39.8 |
2016 |
42.0 |
2007 |
39.7 |
2017 |
41.7 |
2008 |
40.5 |
2019 |
37.7 |
2009 |
42.5 |
2019 |
36.6 |
How many times was the P10 (normal) exceeded in the 20-year annual precipitation record given in Problem 1 ?
Please clarify each step of the solution
In: Civil Engineering
Year |
Pi(cm) |
Year |
Pi(cm) |
1999 |
44.2 |
2010 |
39.2 |
2000 |
47.6 |
2011 |
38.3 |
2001 |
38.5 |
2012 |
46.1 |
2003 |
35.8 |
2013 |
33.1 |
2004 |
40.2 |
2014 |
35.0 |
2005 |
41.2 |
2015 |
39.3 |
2006 |
39.8 |
2016 |
42.0 |
2007 |
39.7 |
2017 |
41.7 |
2008 |
40.5 |
2019 |
37.7 |
2009 |
42.5 |
2019 |
36.6 |
please clarify each step of he solution and do not use Microsoft Excel
In: Civil Engineering
Assignment title: Construction Project Planning
Develop the List of Activities, encode, and describe them, of a Warehouse project
In: Civil Engineering
A 1" pipe buried 2' deep runs 40' from house to outhouse. Frost depth = 3', so a trickle must flow.
a) Say it's laminar flow, at 75% of the velocity needed to make Re=2100. Find that velocity, gal/day carried. Use p=1.94slug/ft^3, m= 2.2*10^-5 lb-sec/ft^2 in this and the following Re problems.
b) Find the head loss hl=hp and the pressure drop (psi) over the l=40'
In: Civil Engineering
1. Horizontal siding may be attached
to wood studs or sheathing. |
||
directly to wood studs. |
||
using bolts. |
||
directly to sheathing. |
2. Structural steel members are
designed, fabricated, and assembled in the shop. |
||
shop fabricated and site assembled. |
||
site fabricated and site assembled. |
||
shop fabricated and shop assembled. |
3. Light-gauge steel studs are attached to top and bottom tracks using
rivets. |
||
staples. |
||
nails. |
||
bolts in predrilled holes. |
||
self-tapping screws. |
4. A length of LVL lumber is more likely to warp or deform than sawn lumber of an equivalent size and length.
True
False
5. Light-gauge steel studs are attached to top and bottom tracks using
rivets.
staples.
nails.
bolts in predrilled holes.
self-tapping screws.
6. A length of LVL lumber is more likely to warp or deform than sawn lumber of an equivalent size and length.
True
False
7. Distinguishing characteristic(s) of platform framing construction include (choose most complete overall answer)
continuous studs from sole plate to rafters. |
||
a level working platform from which to erect each floor. |
||
built-in fire blocking between floors. |
||
continuous studs from sole plate to rafters, a level working platform from which to erect each floor, and built-in fire blocking between floors. |
||
a level working platform from which to erect each floor and built-in fire blocking between floors. |
8. In which of the following situations would a light-gauge steel connector be used?
Connection between a roof truss and a top plate |
||
Connection between members of a top plate |
||
Connection between a post and a beam |
||
Connection between floor joists and subfloor |
In: Civil Engineering
In: Civil Engineering
1. Write at least two sentences in your own words to explain the difference between the confined aquifer and unconfined aquifer.
2. Answer True or False and justify your answer:
a. The porosity of a clayey soil is about 40% while the porosity of a medium sand soil is also 40%. Therefore, both of these soil types will have the same specific yield.
b. Confined aquifers have a larger specific yield than the one from the unconfined aquifer.
In: Civil Engineering
In: Civil Engineering
Two limestones (LS1 and LS2) have LoI (loss on ignition) values as 40% and 33%, respectively. a) Calculate the total amount (%) of impurities in these limestones; b) State which of the quicklimes obtained from these limestones slakes faster.
In: Civil Engineering
Poplar wood contains 50% cellulose. Pure cellulose extracted from wood can enzymatically be converted to glucose C6H12O6 with 90% efficiency.
In: Civil Engineering
In: Civil Engineering
In: Civil Engineering
There are four critical paths in a network. A-B-C-D-E, A-F-E, A-B-H-J-K-E and A-S-T-E. Each activity in this network can be crashed by a maximum of 2 weeks. The crashing cost (per week), for the first week, for activity A is: $540, E is $545 and all other activities is : $135 (per week per activity). The crashing cost, second week and onwards, for activity A is $1080 per week, E is $1350 per week and for all other activities is $405 per activity per week. You have a maximum crashing budget of $2300. The maximum possible reduction in the project duration will be:
Select one:
a. 3 weeks
b. 4 weeks
c. 5 weeks
d. 1 week
e. 2 weeks
In: Civil Engineering
In: Civil Engineering
Soda and lime are added to glass batch in the form of soda ash (Na2CO3) and limestone (CaCO3). During heating, these two ingredients decompose to give off carbon dioxide (CO2), the resulting products being soda and lime. Compute the weight of soda ash and limestone that must be added to 170 lbm of quartz (SiO2) to yield a glass of composition 78 wt% SiO2, 15 wt% Na2O, and 7 wt% CaO.
Part 1
You are to compute the weight (in lbm) of soda ash and limestone that must be added to a certain amount of quartz to produce a particular glass composition.First, compute the lbm of both Na2O and CaO that is necessary for the particular glass composition that is given in the problem.
What is the weight in lbm of:
(a) Na2O
lbm |
(b) CaO
lbm |
Part 2
What is the molecular weight in g/mol of the following:
(a) Na2O
g/mol |
(b) Na2CO3
g/mol |
(c) CaO
g/mol |
(d) CaCO3
g/mol |
Part 3
Finally, convert the lbm of Na2O and CaO to the pounds (mass) of soda ash and lime that will need to be added to the SiO2.
What is the weight, in lbm, of (a) soda ash and (b) lime that will be added to the SiO2 to make the glass outlined in the problem?
(a) | lbm | |
(b) | lbm |
In: Civil Engineering