Here is a source code of how I create my bhop modded maps. the numbers on the ground repesents the unit gaps between platforms.
the only wads you will need are halflife.wad which goes in the valve folder and cstrike.wad that goes to the cstrike folder of your steam installation.
Download Link : http://www.mediafire.com/?zvh1bqqdxta2qpo
You will notice there are 2 rooms collaborated into one, there isa closing meaning that if I need to expand the room for more obstacles I know where to continue from as my reference point.
Hope this helps.