本指南旨在帮助建筑师、土木工程师、建筑检查员和其他与建筑自然采光有关的人员。该指南规定了一种简单但准确的计算和检查室内日光水平的方法。它包含了一个全面的列表，列出了预测建筑物日照水平的其他方法。从这个列表中，专门从事采光的设计师可以选择最适合任何一种情况的方法。本出版物共有87页，32个图表和4个表格。

The purpose of this guide is to aid architects, civil engineers, building inspectors, and others concerned with the natural lighting of buildings. The guide specifies a simple but accurate method of computing and checking interior daylight levels. It contains a comprehensive list of other methods for predicting daylight levels in buildings. From this list, designers specializing in daylighting can select methods that are best suited for any one case.This publication contains 87 pages, 32 figures and 4 tables.