When reading a large specification, to avoid inducing sleep, scan it by key words.
If possible, when given a specification by a client, get the it in electronic form. This allows faster scanning and you can easily come back to important parts by a quick search function
If you have it electronically, use the find command to search it by one word to focus on one area at a time.
For example, search for pipes to find all the mentions of pipes areas of specification (colour, size, joints, type, etc).
