. Cyclopedia of architecture, carpentry, and building; a general reference work ... Fig. 29. Showing How a Cut or Open Stringis Finished at Foot of Stair. 280 STAIR-BUILDING 19 opening through the floors, through which the traveler on the stairsascends or descends from one floor to another. Fig. 31 shows a well-hole, and the manner of trimming it. Inthis instance the stairs are placed against the wall; but this is notnecessary in all cases, as the well-hole may be placed in any part ofthe building. The arrangement of the trimming varies according as the joistsare at right angles to, or are par
. Cyclopedia of architecture, carpentry, and building; a general reference work ... Fig. 29. Showing How a Cut or Open Stringis Finished at Foot of Stair. 280 STAIR-BUILDING 19 opening through the floors, through which the traveler on the stairsascends or descends from one floor to another. Fig. 31 shows a well-hole, and the manner of trimming it. Inthis instance the stairs are placed against the wall; but this is notnecessary in all cases, as the well-hole may be placed in any part ofthe building. The arrangement of the trimming varies according as the joistsare at right angles to, or are parallel to, the wall against which thestairs are built. In the former case (Fig. 31, A) the joists are cut shortand tusk-tenoned into the heavy trimmer T T, as shown in the trimmer is again tusk-tenoned into two heavy joists T J and T J,which form the ends of the well-hole. These heavy joists are calledtrimming joists; and, as they have to carry a much heavier load thanother joists on the same floor, (i^^mmmmm. Fig. 30. Showing How a Cut or Open Stringis Finished at Top of Stair. they are made much two or three joistsare placed together, side byside, being bolted or spikedtogether to give them thedesired unity and strength. Inconstructions requiring greatstrength, the tail and headerjoists of a well-hole are sus-pended on iron brackets. If the opening runs paral-lel with the joists (Fig. 31, B), the timber forming the side of thewell-hole should be left a little heavier than the other joists, as itwill have to carry short trimmers (T J and T J) and the joists run-ning into them. The method here shown is more particularlyadapted to brick buildings, but there is no reason why the samesystem may not be applied to frame buildings. Usually in cheap, frame buildings, the trimmers T T are spikedagainst the ends of the joists, and the ends of the trimmers are sup-ported by being spiked to the trimming joists T J, T J. This is notvery workmanlike or very secure,
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