Hey Guys, I am looking for some rough guidelines on pricing a timber retaining wall installation. I have done a few block walls but was paid by the hour but now need to estimate. Any help would be appreciated. I just do not want to under-estimate. The wall is approximately 80' long with 8' runs at a 90 degree angle at both ends and 3.5' high. So approximately 96' x 3.5'. I have accumulated all of the materials costs ($2562 my costs). My questions are: 1. Should I mark up the materials? If so what % 2. As a one person job how long should the job take? 3. What is a reasonable amount to charge per hour based on the time to complete. 4. Is there as standard rate such as $12 per sq ft? in this case that would be 339 sq ft (surface sq ft) x $12 = $4032. Thanks in advance.