Our roof isn't flat - it has a 45% pitch. In order to insulate at R40 I have to put on an attic I believe.

MLMs;

45% sounds rather steep for a 54 ft. span, roof pitches are usually measured in degrees or
rise and run

if you have not started the building yet, you could use SIPs to accomplish your R40 (no attic)

Whats the cost of the sips - remember I am putting up a post frame building. How would this work into the frame of the post frame building?

It is a perfect combination, clad the frame with sips

So we are all on the same page:  When you say a "post frame" building, to me that is a "post and beam" structure (as compared to one with bearing walls).

I envision steel columns on ±28-30' spacing, with a steel beam connecting the tops of the columns.  There will probably be smaller horizontal channels (girts) at or near the bottom of the columns and probably another girt about 10' up.  These girts are attachment points for the siding. There will probably be some diagonal bracing between some of the columns.  The roof trusses sit on the beams on top of the columns.  Does this sound correct?

Do you know the spacing of the roof trusses?  What kind of roof is your contractor planning?  What kind of exterior walls are planned?

Since you have an attic, you will likely have air handling unit(s) (with heating and cooling coils) and ductwork in the attic.  The AC equipment will now probably be remote, not part of a "package" unit.

Pictures are worth thousands of words.  Any chance you can post some plans?

Bruce

Heres a link to a post frame http://www.integritypoststructures.com/post-frame-buildings.php
I believe the walls are at 4' with 2' OC trusses

Nothing is part of the "package unit". I purchased the building which means the trusses, clad inside and out. Just the shell basically. All the doors, windows, heating , plumbing and so on are another purchase that I am dealing with. I managed to cut my costs for the building in half by purchasing everything this way.

I sent you a wuick email requesting a quote

Thanks.  Now I understand what your are doing. Where I live, those are "pole" buildings.

Hopefully your savings will be intact at the end of the project.

Good luck!

Bruce

My costs have been excellent to date. Menards in Minot has all the CSA approved materials for the building. They did the design, sent it to a canadian engineer and walaaaa - 35% of what it would have cost me to buy Canadian. So...with the savings I can do more "green".

Thats what they are called around here too and the Northeast , where I sold Pole Buildings for Green Bros. Lumber Corp (western NY) 74-79. Typically trusses are 4 ft. oc with roof purlins @ 24" oc for metal roofing attachment.
Pole buildings are very economical ,but typically are not well insulated and not designed to carry much ceiling load.
You really need to know what your ceiling load design is before you start adding or attaching stuff to the bottom truss chords.

I have the prints of the roof - the trusses - where do I look for the ceiling load? Wouldn't the engineer who approved the design know before he approved the trusses?

ok - heres something I found on the trustt drawings. It says:
The truss is designed for commercial or industrial building requirements of part 4, NBCC 2005

This design compiles with: Part 4 of CBC 2006, BCBC 2006, ABC 2006
-CSA 086-01
-TPIC 2007

Design Assumptions Slippery roof material as per NBCC 4.1.2(6) is used

(78% of 29.3 P.S.F. G.L.S. plus 2.1 P.S.F. Rainload) times important factor equals 24.9 P.S.F. specified live roof load

Snowload importance factor = 1.00 Windload Importance Factor = 1.00 Compliance Live Load Factor = 0.50 Is that what you mean?

Where do I find the pitch on this truss drawing? Righ at the very top where the peek is it say a number 6 - however I don't know if thats the pitch?

The pitch would be indicated as 4/12,5/12, 6/12, etc.

your truss loading woud be indicated as:

DESIGN CRITERIA

SPECIFIED LOADS:
TOP CH    LL = 32.5   PSF
                DL =  3.0   PSF     
BOT CH    LL = 10.0   PSF
                DL =  7.0   PSF
TOTAL LOAD  = 52.5  PSF


No doubt your truss supplier has designed for your local snow fall and wind loading, but what you can attach and hang from the ceiling should be of importance to you for future use.
the BOT CH PSF LL&DL numbers are critical for those reasons.

Found it - It says

DESIGN CRITERIA
TOP CH LL = 24.9 PSF
DL = 5.5 PSF
BOT CH = = 10. PSF
DL = 7.0 PSF
TOTAL LOAD: 46.9 PSF

Now on the bracing design of the trusses it says:
TOP CH LL = 100.00 PSF
DL = 15.0 PSF
BOT CH LL = 0.0 PSF
DL = 10.0 PSF
TOTAL LOAD: = 125.0 PSF

It says: This truss has been designed for a moving load of 2000.0 lbs applied over an area of 2-6-0 by 2-6-0 (not sure what that means)

As for the "pitch" still can't find it

In regards to "pervious concrete" I read the following - " Both the low mortar content and the high porosity reduce strength compared to conventional concrete". Thats a concern considering forklifts and scissor lifts will be ion the concrete.

You should be OK

it is not for interior use ,   it is for exterior solid surface areas to help acheive more drainage , since it is pervious and porous it allows fror water to pass thru

Ohhhhh ok so the pervious concrete is something I could use for the outside deck area for the staff. Rather than outting a deck I could use this concrete instead....

These are usually pavers that would be used in the parking lot or driveway, but could also be used as a terrace.  They are not friendly to high heels, however. 

You can see some at the following link.  I have no experience how they well work with snowplows.

http://www.paversearch.com/permeable-pavers-introduction.htm

Is your contractor providing the interior concrete slab? Is there insulation under the salb? Assuming you will be running forklifts, the thickness of the slab and the compressive strength of the insulation under the slab are considerations.

Bruce