We are building a pool

Thanks for the responses. I forgot to mention that the pool will be build in South America, (I used to live in Ohio), so meters are the rule down here. What is the point of the second pool at 4.5m wide? Thats alot of expense for a pool so thin. Why not use that to expand the larger pool? We are planing on using that pool for kids and for old people that like higher water temperature, so they don't complain all the time about the main pool temperature. Along the same lines, if you're considering having it 20.4m x 25m. Why not make it 25y x 25m and size the depth properly so that you can do starts from either direction and have either scy or scm meets held there? There are not SCY competitions here, and the idea of a 20.4 meter wide haven't been put on the table yet, for now the architect is planing a 16.5x25, I just said that as an alternative solution to meet the 2.5 meter rule and have 8 lines. What type of pool is this? Community? School? etc? You may want to consider a diving well on one side if it would ever be needed for that as well. I don't know how would you call it in the states, the pool is for a "sports club" that has many social activities & teams: soccer, basketball, weight lifting, etc. The problem I mentioned in the first post is that all these people can use the locker rooms, but they have to pay and extra amount of money to do an activity in the pool, so we have some dificulties designing the access control system. Obviously my suggestions could add tens of thousands of dollars to a pool design but I think its things worth thinking about if you haven't even broken ground yet. You might be glad you did some day. That's why I'm asking :) My feeling* is two meter wide lanes is sufficient unless you plan to host major national or international competition. Considering the second pool is more or less a "kiddie" pool I'm assuming this is not the case. One advantage of the 2.5 meter lanes would be that you might be able to configure the pool as ten lanes for training purposes. The bottom and end markings would be useless with the ten lane setup, of course That's a good point, We thought 2 meters was sufficient too, then I was reading the rules again, and it said 2.5 meters... What are you planning on using the pool for? Recreation, training, competition, lessons,etc. And how much do you plan on programming for each? Actually we are looking to put as many activities as posible. Most of the time is dedicated for schools and swimming lessons, but we are also planning on having a high volume training team, masters team, recreational activities and hidrogymnastics. If you plan on running big swim meets, then pool dimensional tolerances (with touch pads) is critical, as is the selection of timing equipment, wiring, and scoreboard. Also sound system and swimmer/spectator space. This is a hard question because if we decide to not meet the rule of 2.5 meter minimun in between lines, I don't know what kind of swim meets we will be able to run, and how woth it would it be to spend time and money on equipment and perfect dimensions. It obviously adds a lot to the pool quality, but since I'm the person working with the numbers, I tend to look for optimal trade offs between quality and profitability. Get one pool 16.5m wide and 30.5m long. Put in a 1m bulkhead so you can run 25y or 25m meets and taper the depth past 25m so that it can support your kiddie pool on the short side of the bulkhead. Only one pool to dig, two less walls to build, one filtration system, but a split pool with close to the original dimensions. Obviously couldn't be two differen't temperatures though. That's a really good point, it was a long argument with the team whether we should build one or two pools, the temperature factor was key, since it's very common for people to complain about temperature being to high or too low, or about the pool being too deep, that's why the second pool is only 1.20 and we are planning on making it 35 celsius degress

Thanks for the responses. I forgot to mention that the pool will be build in South America, (I used to live in Ohio), so meters are the rule down here. What is the point of the second pool at 4.5m wide? Thats alot of expense for a pool so thin. Why not use that to expand the larger pool? We are planing on using that pool for kids and for old people that like higher water temperature, so they don't complain all the time about the main pool temperature. Along the same lines, if you're considering having it 20.4m x 25m. Why not make it 25y x 25m and size the depth properly so that you can do starts from either direction and have either scy or scm meets held there? There are not SCY competitions here, and the idea of a 20.4 meter wide haven't been put on the table yet, for now the architect is planing a 16.5x25, I just said that as an alternative solution to meet the 2.5 meter rule and have 8 lines. What type of pool is this? Community? School? etc? You may want to consider a diving well on one side if it would ever be needed for that as well. I don't know how would you call it in the states, the pool is for a "sports club" that has many social activities & teams: soccer, basketball, weight lifting, etc. The problem I mentioned in the first post is that all these people can use the locker rooms, but they have to pay and extra amount of money to do an activity in the pool, so we have some dificulties designing the access control system. Obviously my suggestions could add tens of thousands of dollars to a pool design but I think its things worth thinking about if you haven't even broken ground yet. You might be glad you did some day. That's why I'm asking :) My feeling* is two meter wide lanes is sufficient unless you plan to host major national or international competition. Considering the second pool is more or less a "kiddie" pool I'm assuming this is not the case. One advantage of the 2.5 meter lanes would be that you might be able to configure the pool as ten lanes for training purposes. The bottom and end markings would be useless with the ten lane setup, of course That's a good point, We thought 2 meters was sufficient too, then I was reading the rules again, and it said 2.5 meters... What are you planning on using the pool for? Recreation, training, competition, lessons,etc. And how much do you plan on programming for each? Actually we are looking to put as many activities as posible. Most of the time is dedicated for schools and swimming lessons, but we are also planning on having a high volume training team, masters team, recreational activities and hidrogymnastics. If you plan on running big swim meets, then pool dimensional tolerances (with touch pads) is critical, as is the selection of timing equipment, wiring, and scoreboard. Also sound system and swimmer/spectator space. This is a hard question because if we decide to not meet the rule of 2.5 meter minimun in between lines, I don't know what kind of swim meets we will be able to run, and how woth it would it be to spend time and money on equipment and perfect dimensions. It obviously adds a lot to the pool quality, but since I'm the person working with the numbers, I tend to look for optimal trade offs between quality and profitability. Get one pool 16.5m wide and 30.5m long. Put in a 1m bulkhead so you can run 25y or 25m meets and taper the depth past 25m so that it can support your kiddie pool on the short side of the bulkhead. Only one pool to dig, two less walls to build, one filtration system, but a split pool with close to the original dimensions. Obviously couldn't be two differen't temperatures though. That's a really good point, it was a long argument with the team whether we should build one or two pools, the temperature factor was key, since it's very common for people to complain about temperature being to high or too low, or about the pool being too deep, that's why the second pool is only 1.20 and we are planning on making it 35 celsius degress