Permission is required if you plan to extend or alter the roof space more than specified limits and conditions: 1  Volume increase of 40 cubic metres for terraced houses or 50 cubic metres for detached & semi-detached houses. ( 2 2-3 bedroom houses generally will be OK for dormers). Volume increase of 40 cubic metres for terraced houses or 50 cubic metres for detached & semi-detached houses. ( 2 2-3 bedroom houses generally will be OK for dormers). 3  No extension beyond the plane of the existing roof slope of the principal elevation that fronts the highway (i.e. no dormer to face the street).
The rules haven't changed in a few decades, but the customs have. In both houses of Congress, you still need a majority (50%+1) to pass a bill. In the House of Representatives, that's the only consideration. In the Senate, the rules are a bit more complex. If the bill makes it to a vote, it needs only 51 votes. But you need to debate before it gets to a vote.
The bill is then assigned to a committee for study. If released by the committee, the bill is put on a calendar to be voted on, debated or amended. If the bill passes by simple majority (218 of 435), the bill moves to the Senate. In the Senate, the bill is assigned to another committee and, if released, debated and voted on. Again, a simple majority (51 of 100) passes the bill. Finally, a conference committee made of House and Senate members works out any differences between the House and Senate versions of the bill. The resulting bill returns to the House and Senate for final approval.