Simple analysis of stress on pelvic muscle while riding a bicycle.

We all have ridden a bicycle in some part of our life. If you have done it after a long gap, you may have experienced some pain in the pelvic muscle. After last cycling tour to Nagarkot, I did some analysis to find the stress on the seats of bicycle while cycling. The analysis was done in staad.pro. The analysis file is given below. The analysis is crude and even do not consider pretension force on the spokes.

The result shows that the pain is critical just below the seat where the load is transferred to the frame of bicycle. With mass of 70kg (applied by dividing it to the nodes of seat and the handles) the maximum stress was about 4Mpa. This stress was enough to give pain in the ass! ;)

STAAD SPACE DXF Import of cycle.dxf START JOB INFORMATION ENGINEER DATE 18-Dec-11 JOB NAME analysis of bicycle ENGINEER NAME nirmal END JOB INFORMATION INPUT WIDTH 79 UNIT METER KN JOINT COORDINATES 1 32.6598 28.8503 0; 2 32.4896 29.2262 0; 3 32.3713 29.1453 0; 4 32.2879 29.0288 0; 5 32.2492 28.8909 0; 6 32.2602 28.748 0; 7 32.3193 28.6175 0; 8 32.4194 28.515 0; 9 32.5486 28.4531 0; 10 32.6912 28.439 0; 11 32.83 28.4745 0; 12 32.9483 28.5554 0; 13 33.0318 28.6719 0; 14 33.0704 28.8098 0; 15 33.0595 28.9527 0; 16 33.0004 29.0832 0; 17 32.9002 29.1856 0; 18 32.771 29.2476 0; 19 32.6284 29.2617 0; 20 34.4598 28.8503 0; 21 34.2896 29.2262 0; 22 34.1713 29.1453 0; 23 34.0879 29.0288 0; 24 34.0492 28.8909 0; 25 34.0602 28.748 0; 26 34.1193 28.6175 0; 27 34.2194 28.515 0; 28 34.3486 28.4531 0; 29 34.4912 28.439 0; 30 34.63 28.4745 0; 31 34.7483 28.5554 0; 32 34.8318 28.6719 0; 33 34.8704 28.8098 0; 34 34.8595 28.9527 0; 35 34.8004 29.0832 0; 36 34.7002 29.1856 0; 37 34.571 29.2476 0; 38 34.4284 29.2617 0; 39 32.8993 29.8509 0; 40 33.5598 28.8503 0; 41 33.8437 29.5157 0; 42 32.8181 29.5116 0; 43 33.8437 29.8 0; 44 32.8993 29.8509 0.3; 45 32.8993 29.8509 -0.3; 46 33.9437 29.8 0; 47 33.7437 29.8 0; 48 33.7437 29.8 0.0201266; 49 33.9437 29.8 0.05; 50 33.7437 29.8 -0.02; 51 33.9437 29.8 -0.05; 52 33.913 29.8 -0.0220038; 53 33.9037 29.8 -0.0439999; 54 33.9037 29.8 0; 55 33.7837 29.8 -0.0259996; 56 33.7837 29.8 0; 57 33.8237 29.8 0; 58 33.9213 29.8 -0.0174479; 59 33.9437 29.8 -0.02; 60 33.9437 29.8 -0.03; 61 33.936 29.8 -0.0375694; 62 33.9216 29.8 -0.0354397; 63 33.9437 29.8 -0.04; 64 33.9265 29.8 -0.00939203; 65 33.8637 29.8 -0.0379998; 66 33.8637 29.8 0; 67 33.8237 29.8 -0.0319997; 68 33.7635 29.8 -0.00723009; 69 33.7761 29.8 -0.0130071; 70 33.7463 29.8 -0.0070937; 71 33.753 29.8 -0.0137868; 72 33.7437 29.8 -0.012; 73 33.7649 29.8 -0.0155657; 74 33.7437 29.8 -0.004; 75 33.9437 29.8 -0.01; 76 33.7437 29.8 -0.016; 77 33.7437 29.8 -0.008; 78 33.9174 29.8 0.0226593; 79 33.9037 29.8 0.0440258; 80 33.7837 29.8 0.0261014; 81 33.8237 29.8 0.0320762; 82 33.9316 29.8 0.0271502; 83 33.9437 29.8 0.02; 84 33.9256 29.8 0.0114676; 85 33.9369 29.8 0.0367192; 86 33.924 29.8 0.0358658; 87 33.8637 29.8 0.038051; 88 33.7466 29.8 0.0132581; 89 33.7437 29.8 0.0161013; 90 33.757 29.8 0.0110781; 91 33.7743 29.8 0.0111249; 92 33.7483 29.8 0.00788722; 93 33.7437 29.8 0.00805063; 94 33.7437 29.8 0.0120759; 95 33.9437 29.8 0.01; 96 33.9437 29.8 0.03; 97 33.7437 29.8 0.00402531; 98 33.9437 29.8 0.04; MEMBER INCIDENCES 1 1 2; 2 1 3; 3 1 4; 4 1 5; 5 1 6; 6 1 7; 7 1 8; 8 1 9; 9 1 10; 10 1 11; 11 1 12; 12 1 13; 13 1 14; 14 1 15; 15 1 16; 16 1 17; 17 1 18; 18 1 19; 19 20 21; 20 20 22; 21 20 23; 22 20 24; 23 20 25; 24 20 26; 25 20 27; 26 20 28; 27 20 29; 28 20 30; 29 20 31; 30 20 32; 31 20 33; 32 20 34; 33 20 35; 34 20 36; 35 20 37; 36 20 38; 37 1 42; 38 40 20; 39 20 41; 40 41 42; 41 40 42; 42 40 41; 43 41 43; 44 39 44; 45 39 45; 46 43 66; 47 43 57; 48 48 80; 49 50 55; 50 51 63; 51 50 76; 52 2 19; 53 19 18; 54 18 17; 55 17 16; 56 16 15; 57 15 14; 58 14 13; 59 13 12; 60 12 11; 61 11 10; 62 10 9; 63 9 8; 64 8 7; 65 7 6; 66 6 5; 67 5 4; 68 4 3; 69 3 2; 70 21 38; 71 38 37; 72 37 36; 73 36 35; 74 35 34; 75 34 33; 76 33 32; 77 32 31; 78 31 30; 79 30 29; 80 29 28; 81 28 27; 82 26 25; 83 27 26; 84 25 24; 85 24 23; 86 23 22; 87 22 21; 90 42 39; 91 53 51; 92 54 46; 94 55 67; 95 56 47; 96 57 56; 98 59 75; 99 60 59; 102 63 60; 106 65 53; 108 66 54; 110 67 65; 114 72 77; 129 74 97; 132 75 95; 135 76 72; 138 77 74; 145 79 49; 147 80 81; 148 81 87; 150 83 96; 156 87 79; 161 89 48; 174 93 94; 175 94 89; 179 95 83; 182 96 98; 185 97 93; 190 98 49; ELEMENT INCIDENCES SHELL 93 52 53 54; 97 55 56 57; 100 58 59 60; 101 61 62 58; 103 61 63 51; 104 64 58 54; 105 58 52 54; 107 54 53 65; 109 66 54 65; 111 66 65 67; 112 57 66 67; 113 68 56 69; 115 70 71 72; 116 70 68 71; 117 68 69 73; 118 73 69 55; 119 69 56 55; 120 55 57 67; 121 62 53 52; 122 58 62 52; 123 68 47 56; 124 71 68 73; 125 62 51 53; 126 61 51 62; 127 71 73 50; 128 73 55 50; 130 70 74 47; 131 70 47 68; 133 64 75 59; 134 64 59 58; 136 71 76 72; 137 71 50 76; 139 70 77 74; 140 70 72 77; 141 61 60 63; 142 61 58 60; 143 64 46 75; 144 64 54 46; 146 78 54 79; 149 80 81 57; 151 82 83 84; 152 85 82 86; 153 84 54 78; 154 82 78 86; 155 86 78 79; 157 87 79 54; 158 87 54 66; 159 81 87 66; 160 81 66 57; 162 88 89 48; 163 90 80 91; 164 92 90 47; 165 90 91 47; 166 91 56 47; 167 91 80 56; 168 56 80 57; 169 84 46 54; 170 82 84 78; 171 90 48 80; 172 88 90 92; 173 88 48 90; 176 92 93 94; 177 85 86 49; 178 86 79 49; 180 84 95 46; 181 84 83 95; 183 82 96 83; 184 85 96 82; 186 92 97 93; 187 92 47 97; 188 88 94 89; 189 88 92 94; 191 85 98 96; 192 85 49 98; ELEMENT PROPERTY 93 97 100 101 103 TO 105 107 109 111 TO 113 115 TO 128 130 131 133 - 134 136 137 139 TO 144 146 149 151 TO 155 157 TO 160 162 TO 173 176 - 177 TO 178 180 181 183 184 186 TO 189 191 192 THICKNESS 0.05 DEFINE MATERIAL START ISOTROPIC STEEL E 2.05e+008 POISSON 0.3 DENSITY 76.8195 ALPHA 1.2e-005 DAMP 0.03 ISOTROPIC CONCRETE E 2.17185e+007 POISSON 0.17 DENSITY 23.5616 ALPHA 1e-005 DAMP 0.05 ISOTROPIC ALUMINUM E 6.89476e+007 POISSON 0.33 DENSITY 26.6018 ALPHA 2.3e-005 DAMP 0.03 END DEFINE MATERIAL MEMBER PROPERTY 37 TO 45 90 PRIS ROUND STA 0.04 END 0.04 THI 0.002 1 TO 36 46 TO 51 91 92 94 TO 96 98 99 102 106 108 110 114 129 132 135 - 138 145 147 148 150 156 161 174 175 179 182 185 190 PRIS YD 0.01 52 TO 87 PRIS YD 0.01 ZD 0.05 CONSTANTS MATERIAL STEEL MEMB 37 TO 45 52 TO 87 90 MATERIAL CONCRETE MEMB 1 TO 36 46 TO 51 91 92 94 TO 96 98 99 102 106 - 108 110 114 129 132 135 138 145 147 148 150 156 161 174 175 179 182 - 185 190 MATERIAL ALUMINUM MEMB 93 97 100 101 103 TO 105 107 109 111 TO 113 - 115 TO 128 130 131 133 134 136 137 139 TO 144 146 149 151 TO 155 157 - 158 TO 160 162 TO 173 176 TO 178 180 181 183 184 186 TO 189 191 192 SUPPORTS 10 29 PINNED LOAD 1 LOADTYPE None TITLE weight SELFWEIGHT Y -1 JOINT LOAD 43 TO 98 FY -0.07 PERFORM ANALYSIS PRINT ALL FINISH

Best thing about civil engineering

Recently i read a post somewhere in computer coding forum by some computer engineer. It read as follows:


".....


a = 5


b = 10


a = b

print a

You look at the code above and aren't sure what number gets printed out at the end

Alternative careers

Electrician


Plumber


Architect


Civil engineer


..........."

This is purely under estimated comment.Stupid people like him is creating some stupid softwares without puting his brain on use or knowing what the equation means in real life. And still they think they are really smart.

Lets see where he will not find a civil engineer or an architect..

the house he lives is designed by the architect and enforced by civil engineer .


the water he drinks will come from a soruce far away using system of channels, pipes, crossings..civil engnieer is supposed to get him that water even in draught!


the electriciy which he utilizes comes from the dam built by civil engineer and transmission line errected by civil engineers..


the road and bridges which he uses to go his home and office is built by civil engineers


the airport which he uses to fly his plane is built by civil engineers


the waste he generates in his lifetime is dispossed in secure way by civil engineers


the food he eats gets nutured from the water diverted by a civil engineer.

By copying and pasting the code you can easily be a computer engineer. F*** off. We know how to do our works.


Do you know how computers are used by civil engineer to put stupid people like you in comfort?

They use it to design the nuclear plant.


They use it to make dams and bridges.


They use it to design your gas pipes.


They use it to get answer of those things which you will never understand..


They use it to design the factories where your clothes are woven ..( wont you be shameful!)

I am and will be a civil engineer.

And if still you think you are clearver,

Do you know how high is your street light?


Do you know how many seconds red light glows in zebra crossing?


Do you know why your house do not break even by earthquake?

......


spread love not hate..

Cracking excel VBA password

To remove VBA password in Excel document use following steps. The steps are really simple and you can remove the password in no time.Backup the xls file first!

1. Using a HEX editor, locate the DPB=... part


2. Change the DPB=... string to DPx=...


3. Open the xls file in Excel


4. Excel discovers an invalid key (DPx) and asks whether you want to continue loading the project (basically ignoring the protection)


5. Open the VBA editor (ALT+F11)


6. Overwrite the password, so change it to something you can remember


7. Save the xls file


8. Close and reopen the document and work your VBA magic!

Solution was found at: http://stackoverflow.com/questions/1026483/is-there-a-way-to-crack-the-password-on-an-excel-vba-project

If you want to remove password from protected sheet then see https://nirmaljoshi.wordpress.com/2011/05/25/breaking-excel-passoword/.

GRP pipe malfunctions

Here are some photos of the bursted GRP pipe which was filled with about 2m overburden soil.




The penstock data are:


Head =115m


Discharge =3.2 m3/s


Length =2400m


The main reason for the burst was the movement of pipe alignment due to landslide.

	The hole in ground made by the brusted pipe.
Coupling for GRP	Hard stone lining in inlet canal

List of small hydropower project in Nepal (2011)

Here is list of small hydropower projects in Nepal compiled during 2011. The projects includes capacity ranging from ~1 MW to 10MW.Download file here.

List of 1 MW - 10 MW Operational Small Hydropower Plant in Nepal
S.No.	Name of Company	Name of Project	Location	Capacity (kW)	Date of PPA		COD
			(District)		BS	AD	BS	AD
1	NEA	Chatara	Morang	3,200				Jul-96
2	NEA	Panauti	Kavre	2,400			2022
3	NEA	Tatopani	Magdi	2,000
4	NEA	Seti	Pokhara, Kaski	1,500				1985
5	NEA	Puwa khola	Ilam	6,200				April, 2000
6	NEA	Phewa	Pokhara, Kaski	1,000			2025
7	NEA	Tinau	Butwal, Rupendehi	1,024
8	National Hydro Power Company Ltd.	Indrawati III	Sindhupalchowk	7,500	Mangsir 15, 2054	30-Nov-97	Ashwin 21, 2059	7-Oct-02
9	Butwal Power Company Ltd.	Andhi Khola	Syangza	5,100	Ashadh 29, 2058	13-Jul-01		1991
10	Arun Valley Hydro Power Company Ltd.	Piluwa Khola	Sankhuwasava	3,000	Magh 9, 2056	23-Jan-00	Ashwin 1, 2060	18-Sep-03
11	Sanima Hydro Power Company Ltd.	Sunkoshi Khola	Sindhupalchok	2,500	Kartik 28, 2058	13-Nov-01	Chaitra 11,2061	24-Mar-05
12	Alliance Power Nepal Pvt.Ltd.	Chaku Khola	Sindhupalchok	1,500	Falgun 3, 2056	15-Feb-00	Ashadh 1,2062	15-Jun-05
13	Khudi Hydro Power Ltd.	Khudi Khola	Lamjung	3,450	Ashadh 4, 2058	18-Jun-01	Poush 15, 2063	30-Dec-06
14	Unique Hydel Co. Pvt.Ltd.	Baramchi Khola	Sindhupalchowk	4,200	Mangsir 3, 2066	18 Nov. 09	Kattik 28, 2067	2010
15	Thoppal Khola Hydro Power Co. Pvt. Ltd.	Thoppal Khola	Dhading	1,650	Falgun 23, 2059	7-Mar-03	Kartik 13, 2064	30-Oct-07
16	Ridi Hydropower Development Co. (P.) Ltd.	Ridi Khola	Gulmi	2,400	Bhadra 08, 2063	24-Aug-06	Kartik 10, 2066	27-Oct-09
17	Gandaki Hydro Power Co. Pvt. Ltd.	Mardi Khola	Kaski	3,100	Kartik 7, 2060	24-Oct-03	Magh 08, 2066	22-Jan-10
18	Khoranga Hydropower Co. Pvt. Ltd.	Pheme Khola	Phidim	999				2007
19	Hira Ratna Hydropower P.ltd	Tadi Khola	Nuwakot	5,000	Baishakh 9, 2067	22-Apr-10
20		Seti-II	Gandaki	979				2008
21	UH	Baramchi		980				2006
22	Center for Power Development and Services Pvt. Ltd	Upper Hadi Khola		991				2009
23		Patikhola		996				2009
24	Arun Valley Hydorpower Co. Ltd.	Piluwa Khola		3,000
	Sub Total			64,669
Small Hydro Projects Under Construction (or atleast Financial Closure acheieved)
							Remarks
25	Sunkoshi Hydro Power Co. Pvt. Ltd.	Lower Indrawati Khola	Sindhupalchok	4,500	Mangsir 23, 2059	9-Nov-02
26	Himal Dolkha Hydropower Company Ltd.	Mai Khola	Ilam	4,455	Chaitra 19, 2063	2-Apr-07	At completion stage
27	Barun Hydropower Development Co. (P.) Ltd.	Hewa Khola	Sankhuwasabha	4,455	Ashwin 2, 2064	19-Sep-07
28	United Modi Hydropwer Pvt. Ltd.	Lower Modi I	Parbat	9,900	Magh 20, 2065	2-Feb-09	At completion stage
29	Synergy Power Development (P.) Ltd.	Sipring Khola	Dolkha	9,658	Magh 20, 2065	2-Feb-09
30	Nyadi Group (P.) Ltd.	Siuri Khola	Lamjung	4,950	Shrawan 17, 2064	2-Aug-07
31	Ankhu Khola Jal Bidhyut Co. (P.) Ltd.	Ankhu Khola - 1	Dhading	8,400	Jestha 22, 2066	5-Jun-09	At completion stage
32	Bhagawati Hydropower Development Co. (P.) Ltd.	Bijayapur-1	Kaski	4,410	Ashadh 30, 2066	14-Jul-09	At completion stage
33	Laughing Buddha Power Nepal (P.) Ltd.	Middle Chaku	Sindhupalchowk	1,800	Kartik 02, 2063	19-Oct-06	At completion stage
34	Laughing Buddha Power Nepal (P.) Ltd.	Lower Chaku	Sindhupalchowk	1,765	_	_	At completion stage
35	Alliance Power Nepal P.Ld.	Chaku	Sindhupalchowk	3,000	-	-	At completion stage
36	Bhairabkunda Hydropower P. Ltd	Bhairab Kunda	Sindhupalchowk	3,000	Mangsir 2, 2065, 17 chait 2065	17-Nov-08
37	Nepal Hydropower Developer P. Ltd.	Charnawati Khola	Dolakha	3,520
38	Mailung Khola Hydro Power Company (P.) Ltd.	Mailung Khola	Rasuwa	5,000	Shrawan 9, 2058	24-Jul-01
39	Bojini Company Private Limited	Jiri Khola	Dolkha	990	Magh 23, 2065	5-Feb-09
40	Eastern Hydropower (P.) Ltd.	Pikhuwa Khola	Bhojpur	2,475	Kartik 24, 2066	10 Nov. 09
41	Radhi Bidyut Company Ltd.	Radhi Khola	Lamjung	4,400	Magh 18, 2066	01 Feb. 10
42	Baneshowr Hydro	Lower Piluwa		990
	Sub-Total =			77,668
PPA Concluded Projects (Financial Closure not yet concluded)
43	Annapurna Group Pvt. Ltd.	Madi-1 Khola	Kaski	10,000	Mangsir 18, 2060	4-Dec-03
44	East Nepal Development Endeavour (P) Ltd	Upper Mai Khola	Ilam	3,100	Chaitra 19, 2061	1-Apr-05
45
46	Shivani Hydropower Company (P.) Ltd.	Phawa Khola	Taplejung	4,950	Falgun 1, 2063	13-Feb-07
47	L. K. Power (P.) Ltd.	Dapcha-Roshi	Kavrepalanchowk	5,000	Chaitra 24, 2066	6-Apr-09
48	Ruru Hydropower Project (P) Ltd.	Upper Hugdi Khola	Gulmi	2,599	Ashwin 4, 2066	20 Sep. 09
49
50	Sikles Hydropower (P) Ltd.	Madkyu Khola	Kaski	9,968	Mangsir 3, 2066	18 Nov. 09
51	Baishno Devi Hydro Power (P.) Ltd.	Lower Sunkoshi -III	Sindhupalchowk	9,900	Mangsir 19, 2066	04 Dec. 09
52	Radhi Bidyut Company Ltd.	Radhi Khola	Lamjung	4,400	Magh 18, 2066	01 Feb. 10
53	Triyog Energy & Development Pvt. Ltd.	Middle Gaddigad	Doti	2,970	Magh 20, 2066	03 Feb. 10
54	Jumdi Hydropower Pvt. Ltd.	Jumdi Khola	Gulmi	1,750	Magh 21, 2066	04 Feb. 10
55	Laughing Buddha Power Nepal (P.) Ltd.	Middle Chaku	Sindhupalchowk	1,800	Falgun 03, 2066	15 Feb. 10
56	Barahi Hydropower Pvt.ltd	Theule Khola	Baglung	1,500	Chaitra 16, 2066	29-Mar-10
57	Alliance Power Nepal Pvt.Ltd.	Chaku Khola	Sindhupalchok	1,500	Baishakh 10, 2067	23-Apr-10
58	Nepal Hydro Dev Co.Ltd	Charanawati Khola	Dolakha	3,520	Baishakh 13, 2067	26-Apr-10
59	Api Power Company Pvt.Ltd	NauGad Gad Khola	Baitadi	8,500	Baishakh 19, 2067	2-May-10
60	Energing Energineering Pvt.ltd	Upper Mailun A	Rasuwa	5,000	Ashar 25, 2067	9-Jul-10
61	Swambhu Hydropower Pvt.Ltd	Upper Charnawati	Dolakha	2,020	Mansir 15, 2067	1-Dec-10
62	Butwal Power Company	Andhi Khola	Syanja	4,300	Poush 7, 2067	22-Dec-10
63	Ingua Hydropower Company P. Ltd	Ingua Khola	Ilam	9,700	-	-
64	Joshi Hydropower Development Company Pvt. Ltd.	Upper Puwa-1	Ilam	3,000
65	Adishakti	Tadi khola		970
66	Nama Buddha	Tinau		990
67	Gyatri Hydropower	Charanawati		980
68	Garjang Upatyaka	Chake khola		990
69	Eklekunda	Dorkhu khola		990
70	Electro com and res	Jhyadi Khola		998
71		Dhansi Khola		955
			Sub Total =	102,350
PPA Terminated Projects
72	Kantipur Hydro Power Co. Pvt. Ltd.	Langtang Khola	Rasuwa	10,000	Ashwin 29, 2058	15-Oct-01
73	Bavarian Hydopower Nepal(Pvt.) Ltd.	Lower Nyadi	Lamjung	4,500	Mangsir 15, 2060	1-Dec-03
74	The Gorkha Hydro Power Pvt.Ltd.	Daram Khola	Baglung	5,000	Poush 6, 2056	21-Dec-99
Sub Total=				19500
			Total=	264,187