Divide the total load according to how many supporting beams the roof will have.
Girder t iron roof.
What model steel t iron bars is used for.
To hold them up until the decking of the roof is placed on top a 12 foot 1 inch by 4 inch piece of lumber is used.
If one side of the roof is supported by the house and the other side is supported by the beam divide the total load by two as the beam is only supporting half of the roof.
If there is also a beam in the middle of the roof divide the total load by three.
Girders often have an i beam cross section composed of two load bearing flanges separated by a stabilizing web but may also have a box shape z shape or other forms.
Even terraced housing often used plain cylindrical cast iron posts to support bay windows as historic scotland s guide for.
A girder ˈ ɡ ɜːr d ər is a support beam used in construction.
Fabrication and construction of roof with girders.
Hip roofs are more stable than gable roofs and more resistant to strong winds and hurricane.
Offices hotels and grand houses displayed elegantly profiled cast iron columns while wrought iron plate girders hidden above coffered ceilings spanned the larger public rooms.
A girder is commonly used to build bridges.
Model steel t iron bar is produced with a view to provide connections in some of the steel structures are widely used today.
Seaside piers stepped over the water with a timber deck on wrought iron girders and trusses bearing onto cast iron columns and piles.
Iron was soon found in every type of building.
Hip girder truss a pitch truss with a truncated or flat apex so that it can support more load.
When all the trusses are installed and the first row of decking is on this brace is removed.
Mostly used in rural areas of small cities.
It can be nailed temporarily to each truss as the next truss is put in place.
Usually trusses are put 24 inches apart.