Need advice on window installation,

I am installing windows on my home. and up against permit inspections. The woman that they sent out to inspect doesn't like where I screwed them in.
I was wondering if anyone is familiar with a few window installation terms.:
Head O C distance
Sill O C Distance
Jamb OC Distance
And How it relates to Corner distance, which I already know is 4"
what I really need to know if where to put the screws.
The diagram specs are very confusing. The home depot guy wasn't great at explaining it. nor the manufacturer. so I;m hoping some of my FB friends may be able to clear this up for me.

 

First off, is this in masonry, or wood frame? That would be a helpful bit of info. Also, where did you screw them?

The instructions on the anchor layout page seem pretty clear. 4" from each corner... that's 8 screws right there. Then follow the guidelines for the area in between o the head, sill and side jambs.

 

OC ==On center. 6" OC means a fastener every 6 inches.
Head== The top horizontal part of the window frame
Sill== The bottom horizontal part of the window frame
Jamb== The side, vertical parts of the window frame

Example, using the top line of the table...which is kind of cut off in your picture.

You would have a fastener 4" from the corner on top, bottom, and side...8 fasteners.
On the head (top) you would have a fastener at least every 12 inches, starting from the corner fasteners.

Same on the sill, every 12" starting from the corner fasteners.

Jambs (sides) every 9" starting from the corner fasteners.

Hope that helps...

 

Thank you, I think this is starting to make sense.
On the anchor layout I;m using the #10 Screws, last one down.
as far as the O C. does the head distance and the Jamb distance go from the Center of the window, and on the side where the window splits (Center)?

 

You want one fastener 4" from each corner. Then install enough fasteners between the two corner fasteners so they are equally spaced and are no farther apart than the OC distance. It's ok if they are closer together, they just can't be farther apart.

Example: Lets say the jambs are 52" long and you are using the last line in the table, so the OC is 20". You put one screw 4" from each end. Now they are 44" apart. If you put one screw in the middle, it will be 22" from each of the other two. That's too far. So you need to put in two screws, roughly equally spaced:

4" x 15" x 14" x 15" x 4" where the x's represent screws.

You said you are using the last line in the table...that means you have flanged windows and are installing them to steel studs. Is that correct?

 

Here's a thought--Why not just speak to the woman inspector, and ask her where she wants the installation screws located? And if her installation layout differs drastically from that of the window manufacturer, ask her "why?"

Reminds me of a house addition I was building some years ago. The inspector red-tagged my footing dowel bars, saying the L-bars were oriented incorrectly. When I pulled out my calculation sheets to show him my computed rebar stresses, he tore up that red tag so fast I thought my head would spin.

 

Never once used or heard of anyone using screws to attach a window through the nailing fins.
Screws are going to cause the fin to pucker and cause raised areas.
Use galv. roofing nails instead.