9 



should be of a permanent character. If properly built and provided 

 with proper precautions against destruction b}^ fire, the building 

 should last for at least twenty years, and if properly cared for it 

 will last for a much longer period. The barn should be placed at 

 right angles to the prevailing winds. It is better to erect it on a 

 sloping hillside, provided the slope of the land is toward the direc- 

 tion of the wind. 



The curing barns should be frame' structures, built of common 

 sizes of northwest lumber. Xo timbers larger than 4 by 6 inches 

 are required and these only for the sills. A shingle roof is preferable 

 to an iron roof. The barn must be floored. The construction of 

 the ground floor will be discussed later. The wall on the leeward 

 side of the building should extend clear to the ground, also the two 

 ends. This acts as a wind sail for forced draft. Ventilation 

 should be almost entirety through the floor. The building should be 

 from 22 to 24 feet from sill to plate (fig: 3) and 40 to 48 feet in 

 width, with a gable roof. The gable riclge should have a height of 

 16 feet above the plate, irrespective of the width of the building. 

 The wind -sail method of ventilation is rendered possible because of 

 the uniform trade winds bloAving almost continuously throughout 

 the year. The experiment station lias tried buildings with different 

 systems of ventilation, and it is believed that for Hawaiian condi- 

 tions the method here recommended is the best. The roof of the 

 barn should be constructed with an open ventilator in the ridge. 

 The cheapest and most practicable ventilator is the one which is 

 figured in the accompanying plans (figs. 1, 2, 3, and 4) ; that is, the 

 windward roof should project 3 feet over the lee roof, with a swing- 

 ing door 18 to 24 inches in width the whole length of the building. 

 This swinging door should be hinged on the bottom and an arrange- 

 ment of ropes and pulleys provided so it can be opened and closed 

 at will. No other ventilators are required in any part of the build- 

 ing. This applies to tobacco barns in the windward districts of 

 Hawaii. In other localities not subject to the trade winds hori- 

 zontal side ventilators of similar construction should be placed just 

 below each of the stall floors. 



If a single building with a capacity equal to 100 acres of crop is built, 

 it should be divided into five compartments by partitions from the 

 ground to the roof. Each compartment may be considered as a unit, 

 and this unit construction may be followed for a single barn if it is 

 decided to erect a number of smaller structures in separate localities 

 rather than a single large one. There should be a 4-foot passageway 

 down the middle of the whole length of the building, this passageway 

 extending from the floor to the roof. Each unit should contain three 

 double sets of hanging stalls on each side of the passage. The first 

 floor should be solid, except that a ventilator — composed of two 1 by 6 



