1. For climb testing purposes, connections to the ground only need to support the specimen vertically, and not provide rigid structure (for anti-ram, blast, forced entry, etc.). As such, is it acceptable to prepare the samples such that they are anchored to a concrete foundation, and do not extend below grade? • Correct assumption. Connections for wall only need to support the specimen vertically (suitable for the climbing trials only) 2. For the concrete wall, assuming minimum reinforcement per ACI 318-19 and no shear reinforcement, is this acceptable? • Yes. 3. If option 2 is selected, is the intent to fabricate new specimens that include the ClimbGuard paint initially, or is reprocessing specimen(s) to include the Climbguard paint acceptable? also, is the Climbgaurd paint applied to the concrete wall only, or both the concrete wall and the steel fence? • intent is to reuse/reprocess the test articles. • Climbguard paint is applied to both concrete and steel fence. 4. Is it necessary for the various heights of each test barrier (concrete and steel picket fence) to be constructed as a single specimen with a flush attack face (i.e., a continuous 6-meter-wide steel picket fence with one common post shared between each dissimilar wall height)? Can the three different heights of walls be constructed and fastened to the ground individually? • It is not a requirement that the various wall heights be constructed on a continuous fence. Fence wall heights may be constructed individually or continuous provided each test height section is of sufficient size to conduct the trials.

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Question 1: Dimensions in mm are noted. Can we cross reference these dimensions for the steel fence to US standard unit (inch/foot) measurements to ease purchasing of the Steel Components? Example: the 20mm steel pickets are .787”. If we can use US measurements can these be .75” (3/4”) or would you prefer .875A” (7/8”). Answer: Converting from metric is reasonable, Govt. prefers the .75" (¾) vs going up so much larger. Question 2: The Notional Test Set-up diagram references the concrete wall with a 2.00 meter width for each vertical step-up. This makes the entire concrete test wall 6.00 meters wide. The 2.0 meter dimension is not specified on the steel fence but the red-book print for the fence references vertical post that are 4.0 meters on center (max) separation. This means the steel fence with 4.0 meter vertical column separation for each step-up has an overall width of 12 meters. Is the Notional Test Set-up diagram a scale reference for both the concrete wall and steel fence? Or, should we follow the red book print for the 4.0 meter vertical column width for each step-up in height for the steel fence? Answer: Each fence height section at least 2m wide. You do not need to build the posts with max spacing, you can use 4 posts at 2m spacing to make the total fence length 6m total incorporating the three height differences. The picket spacing must remain the same. Question 3: Does the client prefer a hot dipped galvanized coating on the steel which requires spot cleaning and prep of areas for welding to avoid hazardous gases Or, can we use a galvanized paint to spray coat the fence after the build and all welding is complete? Answer: Govt. prefers cheaper galvanized paint spray coat.