Basic information about biomass: raw materials and processes for biomass energy generation, energy content of various biomass resources, and uses for biomass energy. The term biomass refers to raw organic material used to generate a number of energy resources, including heat, liquid or gaseous fuels, and electricity. Chemical energy stored in biomass can be converted to heat through combustion (burning). Biomass can be converted to liquid or gaseous fuels or can be used to generate electricity in the same way that coal is used. The electricity generated can be sent to energy consumers via electric transmission systems.
Steps. 1  1. Nail top plates to all the outside walls. 2  2. Measure and cut ceiling joists from 2-by-4 lumber. 3  3. Cut a ridge board form 2-by-6 lumber.  4. Lay planks across the ceiling 1  joists. 5. Calculate the rise of the gable roof.  6. Measure and cut the rafter boards from 2-by-4 1  lumber. 7. Make a collar tie for each pair of rafters.
If not, you likely have truss framing. A stick-framed roof with an attic has room to expand -- a dormer for example, might create the additional space you need. A truss-framed roof, on the other hand, doesnât have any attic space to expand -- youâre probably going to have to raise a truss-framed roof to get more space. And although almost any roof can be raised, the cost of raising a very large or complex roof may outweigh the benefits.