Clearly indicate whether the member forces are in tension (T) or compression (C). Problem 5- Determine the force in each member of the truss shown below. hs2 7-65 P hisi 13. Figure 5. 0 ft, hs2 15. Solution for Determine the force in each member of the truss as shown in the figure. The applied forces are P1 7. Book httpamzn. toddler peeing on floor on purpose x elafonisi beach facilities x elafonisi beach facilities. Problem 5- Determine the force in each member of the truss shown below. For each member, the final force F is computed by algebraically adding the entry in the fourth column &92;left(Fo&92;right), to the corresponding entry in the fifth column &92;left(uD&92;right) multiplied by the magnitude of the redundant. Mar 5, 2021 5. Given Required Forces in members jointed at H. With only three members cut by the section, the equations for static equilibrium may be applied to determine the unknown member forces, including F BD. The computation of final member forces can be conveniently carried out in a tabular form, as shown in Table 13. 65 kips, P2 14. 9 kips -8 ft- 3 kips 17. Determine the force in each member of the Pratt roof truss shown in Fig. It looks at each joint individually using the particle equilibrium equations. Using the method of joints, determine the force in each member of the truss shown. Engineering Civil Engineering Q&A Library Using the method of joints, determine the force in each member of the truss shown. toddler peeing on floor on purpose x elafonisi beach facilities x elafonisi beach facilities. Advanced Physics questions and answers. 7K subscribers Subscribe 608 Share 114K views 5 years ago Book httpamzn. Members deformation under loads are negligible and of insignificant magnitude to cause appreciable changes in the geometry of the structure. Problem 5- Determine the force in each member of the truss shown below. Log In My Account on. rs; zn. Determine the reactions and forces of each member of the Pratt truss shown by methods of joints. FinalAnswer 57. 1 kips. Summarized your final answers. 1 kips. Chapter 6 Hibbeler Statics Engineers Academy - YouTube Determine the force in each member of the truss. 65 kips, P2 14. Assume positive; Question Part A Determine the force in each member of the truss shown in (Figure 1). "FC" is also a zero-force member, as indicated by the force analysis of joint "F", Fig - 6 (Truss Joint). 2kN load is applied at points A and F acting down. State whether each member is in tension or compression. It is worth reflecting on the direction of the arrows indicating tension and compression below. The truss has 13 members and 8 joints and is supported by 3 reactions. Determine the forces in the members of the roof truss shown in Fig. Ethics is equals to zero. SOLUTION Free body Truss F xx 0 0H Because of the symmetry of the truss and loading, 1 total load y 2 AH AH y 1200 lb Free body Joint A 900 lb 54 3 F AB F AC 1500 lb F AB C F AC 1200 lb T Free body Joint C. Express your answer to three significant figures and include the appropriate units. Trim the top edge of the siding to match the truss. Problem 5- Determine the force in each member of the truss shown below. 5 kips, and P3 10. Expert Answer Transcribed image text Determine the force in each member of the truss shown. 6 ft 6 ft 19. Transcribed image text 1. &183; Basic Lumber Design Values are F 2000 psi F 1100 psi F 2000 psi E1,800,000 psi Duration Of Load 1. Specify whether each member is in tension or compression. 1-2 Trusses Fig 1. 51 kN. Application To calculate the loads on bridges and roofs, especially if you need to know all of the values of the members. Determine the force in each of the. Question Determine the forces in each member of the truss shown by Method of Section. Member forces are all indicated as tensile forces (i. 5 kips, and P3 10. SOLUTION Support Reactions Entire truss S FB xx 0 0 S- - MB Cy 0 (400 mm) (1200 N)(500 mm) 0 B yy- 1500 N 1500 NB S - - FC y 0 1500 N 1200 N 0 C2700 N Free body Joint B BC 1500 N 13 12 5 BA. The results of the truss analysis presented in the output file are listed by frame element number. Indicate if Prob 1. 5 degree angle (set the saw to 22. Clearly indicate whether the member forces are in tension (T) or compression (C). Indicate if Prob 1. Chapter 6 Hibbeler Statics Engineers Academy - YouTube Determine the force in each member of the truss. 9 kips -8 ft- 3 kips 17. Step-by-Step Verified Solution Free-Body Entire Truss. State whether each me 1737. Basically Method of joints is an analysis technique to find the forces in the members of a truss. 9 kips -8 ft- 3 kips 17. Using the method of joints, determine the force in each member of the truss shown. 8, determine the change in member forces caused by a temperature rise of 30C in members AB, BC, CE, EG and GH. For the Howe roof truss shown, determine the forces in members BC, CI, and IJ. 1 kips. Sep 8, 2017 The reaction forces (blue) are calculated and displayed on the truss. 2kN load is applied at points A and F acting down. Solution Due to symmetry, R A R 0 12 10 7 35 kN. Specify whether each member is in tension or compression. Free body diagram of joint A showing internal member forces (the load path). Spacing of trusses are center to center (in inches). 23 views Sep 10, 2022 Like Dislike Share Save MathCors Mechanics 3. pin at point A and a roller at point E. Question Using the method of joints, determine the force in each member of the truss shown. The Truss Plate Institute (TPI) serves the truss industry by providing in-plant third party quality assurance inspectionsaudits, guidelines on the bracing, handling, and safety of trusses , standards development and related design and quality control publications and tools. 5m 0. 0 fl, and hs3 12. Determine the force in each member of the truss shown by the method of joints. will dual spec be in wotlk pre patch. 65 kips, P2 14. State if the members are in tension or compression. Transcribed image text 1. If negative sign appears, then it indicates that the member is subjected to compression. The question is the first given below is subjected to the portion. hs2 7-65 P hisi 13. Answer to Determine the force in each member of the Howe roof truss shown. The truss shown has a pin at A and a roller at C. Express your answer to three significant figures and include the appropriate units. See Answer Determine the force in each member of the Gambrel roof truss shown. Expert Answer. See Answer Determine the force in each member of the Gambrel roof truss shown. State whether each me 0945. Advanced Physics questions and answers. Using the method of joints, determine the force in each member of the truss shown. 0 votes. 0 fl. Select "guess force on a member", use the popup menu "select a member" (from 1 to 13), and then select "compression", "tension" or "zero member" from the next popup menu. 0 fl, and hs3 12. Determine the force in each member of the Fink roof truss shown. It is worth reflecting on the direction of the arrows indicating tension and compression below. first thing you&39;re going to do when analyzing a truss is to solve for the reactions where the body is attached to the ground (or wall). 5m 0. We can start the. You may want to try the "quick" method for Problems 3. 2 0. Step-by-Step Report Solution Verified Answer Only the forces in half the members have to be determined, since the truss is symmetric with respect to both loading and geometry. Draw all relevant free body diagrams. Determine the force in members FG and FH of the truss shown. Express your answer to three significant figures and include the appropriate units. The reaction forces (blue) are calculated and displayed on the truss. 5 The Method of Sections 102 Truss, Classification of statically determinate and indeterminate trusses - Illustrative examples, Simple demonstrations Solution (This is known as a statically indeterminateproblem) The problem implies that the forces at A, B, and Cshall be found in terms of P Use Hooke's law to find deflection in a statically. loaded truss illustrated and state whether each member is in tension or compression. Accordingly, we know member 2 must be generating a force that is pulling the point to the right to maintain the forces in the x-direction. Determine the force in each member of the truss shown using method of joints. The reactions at the supports are given. statically indeterminate problems a b c 30 kn 10 kn 20 kn we have used the laws of statics to analyse problems such as the one illustrated fy 0, so there is a reaction force of statically determinate truss if all the forces in all its mem-bers as well as all the external reactions can be determined by using the equations of equilibrium. (Height - Width restrictions vary by location for shipping. The applied forces are P1 7. Attic truss room size calculator. Using the method of joints, determine the force in each member of the truss shown. For the truss shown, determine the forces carried by each member using any method you wish. 11 (b), we observe that only joint 3 is free to translate. Determine the forces in the members FH, HG, and GI in the truss shown in the below figure. This problem has been solved. State if the members are in. 5 kips, and P3 10. In Figure 2a, a diagonal member has been added to the truss of Figure 1. Transcribed Image Text IEN 12 1. Solution Due to symmetry, R A R 0 12 10 7 35 kN. 16 hours ago method of structural analysis for statically indeterminate , truss deflections by electronic computation of the williot, christian otto mohr 1835 1918 shell buckling, pdf graphic kinematics visual. Summarized your final answers. State if the members are in tension or compression. Use the method of joints to determine the force in each member of the truss shown. Determine the height of the roof that you intend to build. Advanced Physics questions and answers. Search Truss Calculator. Engineering Mechanical Engineering Q&A Library Determine the force in each member of the loaded truss. P3 10-1 hss Pa 145 E. 6 ft 6 ft 19. to2i8HBOO More videos. 9 kips -8 ft- 3 kips 17. State whether the members are in tension or compression. is the vertical reaction force at support C (rolle View the full answer Transcribed image text A 48 kN 10. Determine the force in members BD, BE, CE and DE of the pratt bridge truss shown. SOLUTION Free body Entire truss FBy. Because the geometry, material properties, and loading conditions are all symmetric about the vertical plane of symmetry that passes through member 5. Roof Dead load 15 lbft2 c. 5 ft. Determine the force in each member of the truss and state if the members are in tension or. Problem 408. The truss shown has a pin at A and a roller at C. Literature guides Concept. Determine the force in each member of the Warren truss shown below by method of joints. Using the method of joints, determine the force in each member of the truss shown. Determine the forces in the members FH, HG, and GI in the truss shown in the below figure. For example, the standard method for specifying the dimensions of an American Wide Flange Beam is W 6 x 25. The computation of final member forces can be conveniently carried out in a tabular form, as shown in Table 13. Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension (T) or compression (C). 5 kips, and P3 10. 126,565 views Nov 15, 2016 513 Dislike Share Save FinalAnswer 57. Set P 2 400 lb. Cheers, Doug. Show all necessary labels, illustrations and solutions. Compute the force in each member of the Warren truss shown in Fig. Determine the force in each member of the truss shown. It indicates, "Click to perform a search". 150 N 200 N 8 m B x 125 N 8 m 6 m 6 m. The truss shown has a pin at A and a roller at C. Determine the force in each member of the Warren truss shown below by method of joints. b>Determine the force in each member of the truss shown. Only the forces in half the members have to be determined, since the truss is symmetric with respect to both loading and geometry. asked Oct 24, 2019 in Physics by. 0 fl. Determine the force in each member of the truss shown by the method of joints. Answer a) M 0. For each member, the final force F is computed by algebraically adding the entry in the fourth column (FO) , to the corresponding entry in the fifth column (uD) multiplied by the magnitude of the redundant Dx -45,78 k. 9 kips -8 ft- 3 kips 17. Free body diagram of joint A showing internal member forces (the load path). Set P 2 400 lb. Show all necessary labels, illustrations and solutions. Thus, m r 2j. These trusses may be simple span , multiple bearing, or cantilevered. b>Determine the force in each member of the truss shown. 5kN x 2 9. 5 ft The truss shown has a pin at A and a roller at C. 65 kips, P2 14. To do this, use a miter saw to cut one end of a 2x4 at a 67. Continue Shopping. State whether each member is in tension or compression. State whether each member is in tension (T) or compression (C). npm package export subfolder papa legba ritual. asked Oct 24, 2019 in Physics by. (a) Write all the equilibrium equations for all the joints, (b) Express the system in matrix form, and (c) solve the resulting system of linear equations using MATLAB. Use the method of sections to determine the forces in members DF, EC and DE. Transcribed Image Text 6-6. This problem has been solved. Determine the force in each member of the Pratt roof truss shown. Determine the force in the member CD of the truss, and state if the member is in tension or compression. 3485 W r View Answer Discussion. 127893 reads. If the forces within the members are to be determined, then an. Each pipe has an outside diameter of 21 mm and a wall thickness of 3. A magnifying glass. Determine the force in each member of the truss shown. 2. Finite Element Analysis Truss Example - Access The Best Examples Here Report-example. SOLUTION Free body Entire truss FBy. Application To calculate the loads on bridges and roofs, especially if you need to know all of the values of the members. lt; nr. From the dimensions of the truss, we find that all inclined members have slopes of 34, as shown in Fig. (20 points) Determine the force in each member of the truss shown below, and state whether each member is in tension (T) or compression (C). Determine the forces in members DE, EI and HI of the truss shown in the figure. The applied forces are P1 7. Consider the equilibrium of the entire frame. 7K subscribers Subscribe 245 77K views 6 years ago Determine the force in each member of the truss. comBecome my official student httpwww. You can use. 2 m Determine the forces acting in all the members of the truss shown in Fig. State whether each member is in tension or. Ignore the self weights of the truss and the cross girders 5. SOLUTION Support Reactions Entire truss S FB xx 0 0 S- - MB Cy 0 (400 mm) (1200 N)(500 mm) 0 B yy- 1500 N 1500 NB S - - FC y 0 1500 N 1200 N 0 C2700 N Free body Joint B BC 1500 N 13 12 5 BA. This problem has been solved. 0 fl, and hs3 12. Determine the force in each member of the truss. Clearly indicate whether the member forces are in tension (T) or compression (C). Forces in members CG and DF. State whether each member is in tension or compression. apex legends sensitivity to. 5 ft. Determine the forces in the members FH, HG, and GI in the truss shown in the below figure. Show all necessary labels, illustrations and solutions. Determine the force in each member of the truss supporting a floor deck as shown in Fig. Determine the force in each member of the truss, and state if the members are in tension or compression. VIDEO ANSWERIn this problem. Using the method of joints, determine the force in each member of the truss shown. Determine the force in members BD, BE, CE and DE of the pratt bridge truss shown. (15 marks, C3) - 3 m 3 m 3 m 3 m B T 8m 121 2000 N Figure 1 Question Q1. The applied forces are P1 7. Civil Engineering questions and answers. After solving for the reaction forces, you solve for the unknown forces at each joint until you have found the value of each member. For each member, the final force F is computed by algebraically adding the entry in the fourth column &92;left(Fo&92;right), to the corresponding entry in the fifth column &92;left(uD&92;right) multiplied by the magnitude of the redundant. Determine the reactions and forces of each member of the Pratt truss shown by methods of joints. Set P 2 400 lb. State whether each member is in tension or compression. Step-by-Step Verified Solution Free-Body Entire Truss. Using the method of joints, determine the force in each member of the truss shown. Expert Answer. Problem 408 Warren Truss - Method of Joints. toddler peeing on floor on purpose x elafonisi beach facilities x elafonisi beach facilities. Determine the forces in the members of the roof truss shown in Fig. Specify whether each member is in tension or compression. The 400 N, 500 N, and 600 N forces are parallel to the x, y, and z axes, respectively. The computation of final member forces can be conveniently carried out in a tabular form, as shown in Table 13. Subscribe to Un-lock this answer and thousands more Answers. Take section (A)-(A), which cuts the members FH, GH, and GI and separates the truss into two parts. Determine the force in each member of the truss as shown in the figure. For each member, the final force F is computed by algebraically adding the entry in the fourth column &92;left(Fo&92;right), to the corresponding entry in the fifth column &92;left(uD&92;right) multiplied by the magnitude of the redundant. Determine the force in each member of the Pratt roof truss shown in Fig. There is a pin at A and a rocker at E. This problem has been solved See the answer See the answer See the answer done loading. marathon county. This problem has been solved. comBecome my official student httpwww. Question Determine the forces in each member of the truss shown by Method of Section. Force in Member L5L6 135 k (Tension) Joint L5 Zero force member Force in Member L5u5 0 k Sum forces in the horizontal direction L4L5 L5L6 L4L5 135 k Force in Member L4L5 135 k (Tension) Method of Sections - Cut section similar to 1-1 on right side of truss Height of U5L5 U1L1 y2 y1 3x1 x1 y2 6. Consult local building codes to learn the minimum height necessary for the roof on your building. Solution Due to symmetry, R A R 0 12 10 7 35 kN Take section (A) (A), which cuts the members FH, GH, and GI and separates the truss into two parts. Only the forces in half the members have to be determined, since the truss is symmetric with respect to both loading and geometry. Nov 21, 2022 Solve the truss by taking the sum of forces 0 Take the moment about a node of more than one unknown member SkyCiv Truss Software We hope that you found this tutorial useful for your projects. 1 Approved Answer ARUN M answered on January 18, 2021 5 Ratings, (9 Votes) The calculation are showed in the attached file. State whether each member is in tension or compression. More Answers. Trusses and cables are examples of coplanar force systems in equilibrium that were introduced in. P3 10-1 hss Pa 145 E. Measure the width of the building that the truss will span. 6 ft 6 ft 19. Determine the force in members AF, AB, AD, ED, FD, and BD of the space truss, and state if the members are in tension or compression. 5 ft. oneplus n20 dialer codes, craigslist personals ads
Draw all relevant free body diagrams. . Determine the force in each member of the truss shown
Cos x z. asked Oct 24, 2019 in Physics by. 2 1. State whether each member is in tension or compression. Problem 5- Determine the force in each member of the truss shown below. (Height - Width restrictions vary by location for shipping. MA 0, gives RD 4 - 40 1 - 60 2 - 50 3 0 RD 77. State whether each member is in tension or compression. 0 fl. In this truss we find that joint D and F have only two unknown forces. Using the method of joints, determine the force in each member of the truss shown. b>Determine the force in each member of the truss shown. Virtually no recombin. For the truss shown, determine the forces carried by each member using any method you wish. 6 ft 6 ft 19. 1 Approved Answer ARUN M answered on January 18, 2021 5 Ratings, (9 Votes) The calculation are showed in the attached file. The computation of final member forces can be conveniently carried out in a tabular form, as shown in Table 13. Trim the top edge of the siding to match the truss. Determine the forces in the members of the roof truss shown in Fig. VIDEO ANSWER So this is This diagram is scaring the question, and it&x27;s giving us the anchor be if and the anchor b g f and the anger DT it and anger d it, ace. Select "guess force on a member", use the popup menu "select a member" (from 1 to 13), and then select "compression", "tension" or "zero member" from the next popup menu. Calculate the tension and compression forces on each member given the load requirements below. Question Determine the force in each member of the truss shown below and indicate whether the members are in tension or compression (10 Points) Determine the forces acting in all the members of the truss shown in the Figure and indicate whether the members are in tension or compression (10 Points). Summarized your final answers. Question 2 -Determine the force in each member of the truss. Clearly indicate whether the member forces are in tension (T) or compression (C). F G H 4 3 4. pin at point A and a roller at point E. Question Determine the forces in each member of the truss shown by Method of Section. FinalAnswer 57. 0 fl. first thing you&39;re going to do when analyzing a truss is to solve for the reactions where the body is attached to the ground (or wall). Show a. 5 Now here, minus any notes that are assumed direction is wrong. Measure the width of the building that the truss will span. &183; The Estimating Procedure. A free-body diagram of the entire truss is drawn; external forces acting on this free body consist of the applied loads and the reactions at C and E. State whether each member is in tension or compression. 5 Now here, minus any notes that are assumed direction is wrong. State whether each me 1737. Solution 410 Click here to show or hide the solution Tags Pratt truss roof truss Method of Joints Truss Truss Analysis Truss member Symmetrical Load symmetrical forces. so here in this problem were given this trust on we have to calculate the force in each member on. Literature guides. Determine the force in each member of the Warren truss shown below by method of joints. 0 fl, and hs3 12. The first one is Sigma. to 840 N force. The reaction forces (blue) are calculated and displayed on the truss. 5 kips, and P3 10. Use the method of sections to determine the forces in members DF, EC and DE. rs; zn. Using the method of joints, determine the force in each member of the truss shown. 20 (d). Virtually no recombin. To calculate the costs, we use the following two formulas Including installation costs total costs truss count single truss price cost per time unit of work duration of work. 2 1. For example, in the above structure we have 5 joints each having a free body diagram as follows. Visit our truss tutorials for more useful information about truss and dont forget to check out our guide to solving truss by Method of Joints. Top Chord Dead Load 10 psf. Why The free-body diagram is shown in Fig. A scissors truss is a really cool roof framing option Graphical gear calculator for bicycle gearing systems Next, I calculate the length of the common rafter using the Construction Master app on my smartphone (see CM sequence above) The reason this didn't work in our imaginary scenario is due to multi-point beam load calculations that he. Question Determine the forces in each member of the truss shown by Method of Section. Virtually no recombin. 17 Since, TAB 6. Determine the forces of all the members of the truss shown by the METHOD of JOINTS. Homework help starts here Engineering Civil Engineering Q&A Library 1. 5 kips, and P3 10. This problem has been solved. 4 m -2. The truss shown has a pin at A and a roller at C. 0 fl, and hs3 12. Log In My Account mk. State whether each member is in tension or compression. The force is positive if in tension, negative if in compression. 6 mm). SOLUTION Support Reactions In this case, it will be easier to compute the support reactions first. The reactions at the supports are given. The method of joints This method uses the free-body-diagram of joints in the structure to determine the forces in each member. 0 fl, and hs3 12. Aspects of truss design for roofs Truss or I beam. Figure 6. Transcribed image text Determine the force in each member of the truss. two short links at B, and a short link at C. Draw the shear and moment diagrams. hs2 7-65 P hisi 13. You may want to try the "quick" method for Problerns 3. A truss A truss is a structure made of two force members all pin connected to each other. The free-body diagram of the entire truss is shown in Fig. 9 kips -8 ft- 3 kips 17. First of all look for the joint which does not have more than 2 unknown forces. FREE Answer to Will upvote if correct Determine the force in each member of the Howe roof truss shown. Clearly indicate whether the member forces are in tension (T) or compression (C). Problem 5- Determine the force in each member of the truss shown below. This joint is subjected to only two unknown forces, namely, the forces exerted by members AB and AD. The computation of final member forces can be conveniently carried out in a tabular form, as shown in Table 13. State whether each member is in tension or compression. ) by a specific set of. Determine the force in each member of the truss shown in the Figure and indicate whether the members are in tension or compression. Either of the two parts can be used for the analysis. Solution for Determine the force in each member of the truss. Also, read One Way Slab and Two Way Slab Design Step by Step Summary of Zero Force Member for Truss, Then, if only two non-collinear members form a truss joint and no external load or support reaction is applied to the joint, the. This problem has been solved. Referring to the FBD of the entire truss shown in Fig. Determine the force in each member of the truss shown in Figure 1 and state if the members are in tension or compression. State whether each member is in tension or compression. Question Part A Determine the force in each member of the truss shown in (Figure 1) and state if the members are in tension or compression Determine the force in member AG of the truss, and state if the member is in tension or compression. The reaction forces (blue) are calculated and displayed on the truss. lt; nr. hs2 7-65 P hisi 13. 1-2 Trusses Fig 1. The applied forces are P1 7. Take that P 180 lb. It indicates, "Click to perform a search". The first one is Sigma. For each member, the final force F is computed by algebraically adding the entry in the fourth column &92;left(Fo&92;right), to the corresponding entry in the fifth column &92;left(uD&92;right) multiplied by the magnitude of the redundant. 5 The Method of Sections 102 Truss, Classification of statically determinate and indeterminate trusses - Illustrative examples, Simple demonstrations Solution (This is known as a statically indeterminateproblem) The problem implies that the forces at A, B, and Cshall be found in terms of P Use Hooke's law to find deflection in a statically. SOLUTION Free body Truss From the. Best for online homework assistance. For each member, the final force F is computed by algebraically adding the entry in the fourth column &92;left(Fo&92;right), to the corresponding entry in the fifth column &92;left(uD&92;right) multiplied by the magnitude of the redundant. Determine the force in each member of the Pratt roof truss shown. 0 ft, hs2 15. Engineering Mechanical Engineering The truss shown has a pin at A and a roller at C. Distances shown are L 40. With only three members cut by the section, the equations for static equilibrium may be applied to determine the unknown member forces, including F BD. 6K subscribers Subscribe 387 Share 115K views 6 years ago Determine the force in each member of the truss. 5 The Method of Sections 102 Truss, Classification of statically determinate and indeterminate trusses - Illustrative examples, Simple demonstrations Solution (This is known as a statically indeterminateproblem) The problem implies that the forces at A, B, and Cshall be found in terms of P Use Hooke's law to find deflection in a statically. So to. Determine the forces in all the members of the truss loaded and supported as shown in fig. (Ans FAB 5. Trusses must be designed for any special loading, such as concentrated loads. FAB- Value Units Submit quest A Figure 1 of 1 Part B Determine the force in the member BC of the truss, and state if the member is in tension or compression. Literature guides Concept. Determine the force in each member of the truss shown using the Method of Joints. Determine the forces in each member of the truss shown by Method of Section. Indicate if Prob 1. Example Q 2. Clearly indicate whether the member forces are in tension (T) or compression (C). Add new comment. Trusses and cables are examples of coplanar force systems in equilibrium that were introduced in. There is a pin at A and a rocker at E. State whether each me 1737. . craigslist san diego for free