Blast Design of Reinforced Masonry Walls
Blast Design of Reinforced Masonry Walls
(OP)
I'm trying to determine if the reinforcement provided (#5 @ 32" oc) is sufficient for a masonry wall with a punched opening supporting a window. Conventional Standoff distances are met, so minimum blast pressures apply.
I have two types of software at my disposal capable of doing dynamic analysis: HazL and SBEDS. The problem is once I have the dynamic results, I don't know what to do with them. HazL will give the edge shears to design the window support for but won't design the supports themselves. SBEDS will design a masonry wall, but there's nowhere to put in window size.
I have two types of software at my disposal capable of doing dynamic analysis: HazL and SBEDS. The problem is once I have the dynamic results, I don't know what to do with them. HazL will give the edge shears to design the window support for but won't design the supports themselves. SBEDS will design a masonry wall, but there's nowhere to put in window size.






RE: Blast Design of Reinforced Masonry Walls
RE: Blast Design of Reinforced Masonry Walls
So I have my dynamic loads, but I don't know where to go from there. Can I convert this to static somehow? How much of the wall can be considered to be resisting this pressure? How do I figure out a masonry wall's "ultimate" capacity for a small region? I know how to do it for steel or CFS studs, but the confusion comes when it is a wall, particularly a masonry wall.
RE: Blast Design of Reinforced Masonry Walls
If I recall correctly, NFPA is a good resource for calculating pressures.
What is conventional standoff distance refer to?
RE: Blast Design of Reinforced Masonry Walls
RE: Blast Design of Reinforced Masonry Walls
RE: Blast Design of Reinforced Masonry Walls
RE: Blast Design of Reinforced Masonry Walls
I use SBEDS to design the jambs. You kind of have to fake it and determine an equivalent reinforcing spacing to account for your jamb steel. I've had to increase the normal reinforcing in my jambs to take the glazing reaction.
Steellion is on the right track. He's following the UFC 4-010-01 article B-3.1.4 methodology.
RE: Blast Design of Reinforced Masonry Walls