Q: Do you have engineering data for you products? What codes do they comply with? What’s the load rating on brackets? Rails? A: Yes, all of our equipment is engineered and/or tested to meet or exceed all OSHA and ANSI specifications for Scaffolding and Guardrails. For example, we rate our Stacker Bracket Frames for 375 lbs each, but they are engineered and tested to withstand a load of 1500 lbs to meet the required 4:1 safety factor. All guardrail posts and mounting options are made to withstand the 200 lb. load requirement without failure.