1950s residential wood framed ranch construction. Front rear inside field Hip roof purlins are supported on interior. Stud wall. Intent is to remove studwall and replace with LVL beam with Jack and king studs With load transfer to Foundation in basement below.How to calculate Purlin strut...
msquared48, what you see in the photo is a long trunkline of ductwork that comes to the location in the photo from an old HVAC unit (even heavierl and larger than needed) from another roof on an adjacent addition. I aready alerted the building owner of the poor condition of both roof membranes.
The photo included in my second post shows the existing roof deck/framing penetration that is to be re-used with the new HVAC unit. The new unit (47x84) will be positioned on the side of the penetration where the existing ductwork is visible and will make use of that existing penetration. I've...
On second thought I like dhengr's suggestion of designing steel beams to span the width of the roof, bearing at each end by pocketing into the brick parapet walls.
It certainly simplifies the situation. If the existing roof framing is to be reinforced, a large area (the 84" length of the HVAC...
It APPEARS that the roof deck 2x6s are clear span, however, view is very limited through an approx. 16" square hole in the lathe and plaster ceiling that is above a suspended ceiling (and I am already standing on the top of an 8' ladder). Above the plaster opening, one (but not all) of the 2x6s...
I have a project involving the need to reinforce a clear span roof joist framing for the addition of a proposed rooftop HVAC unit.
The building was constructed around the early 1900's and uses multi-wythe load bearing brick and mortar side walls with parapets projecting above roof level...
