A 30 ft by 40 ft classroom with 8 ft high ceilings will have an ambient lighting target illuminance of 70 fc at a work plane that is 28 in above the floor. It is anticipated that the ceiling reflectance is 0.50 and the average wall reflectance is about 0.3. The space will be illuminated with surface- mounted, prismatic wraparound luminaires with four lamps, as shown in Figure 20.16. The initial output of the fluorescent lamps is 2,850 lumen. The light loss factor will be assumed to be 0.70. Neglecting the spacing criteria, determine the minimum number of luminaires required to provide uniform illumination in the space. (Type in the number only)

A 30 ft by 40 ft classroom with 8 ft high ceilings will have an ambient lighting target illuminance of 70 fc at a work plane that is 28 in above the floor. It is anticipated that the ceiling reflectance is 0.50 and the average wall reflectance is about 0.3. The space will be illuminated with surface- mounted, prismatic wraparound luminaires with four lamps, as shown in Figure 20.16. The initial output of the fluorescent lamps is 2,850 lumen. The light loss factor will be assumed to be 0.70. Neglecting the spacing criteria, determine the minimum number of luminaires required to provide uniform illumination in the space. (Type in the number only)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Calculate the flight height above average terrain that is required to obtain vertical photographs at an average scale of Sif the camera focal length is f for the following data: ▾ Part A S=1:14,000; f = 152.40 mm Express your answer in feet to three significant figures. H= Submit Part B |VL]ΑΣΦ1 11 H= Request Answer S=1:9600; f=88.90 mm Express your answer in feet to three significant figures. vec 4 → ĊIE ΠΙΑΣΦΗ vec 4 ? ? ft ft
1) Determine the Centroid of the Shaded Area, Tabulate your answers and solution Y 450 mm 300 mm r= 200mm 75 mm "Units in mm 300 mm 150mm 75 mm 50 150 50
please show all your solutions I NEED IT ASAP PLEASE
Q1) Calculate the number of aviation lines if you know that the dimensions of the area 30 x 30 km and the scale 1:20000 and the dimensions of the negative board 25 x 25 cm and side overlap 30%.
110: The site of Schöningen in Germany is important because Group of answer choices A: it is an Acheulian handaxe quarry B: well preserved wooden spears were recovered there C: None of the other answers are true D: it is a burial ground E: the earliest examples of Homo heidelbergensis were found there.
Define the terms error and error analysis mathematically. Also define types of errors
27 Use the mass diagram (below) to answer the questions: What is the volume of cut/fill taken between stations 10+00 and 24+00? 1500 1200 900 600 300 400 0 1400 O 1000 700 O 100 Mass Diagram 024 6 8 10 12 14 16 18 20 22 24 26 28 30 Station
i need the answer quickly
HYDROMETEOROLOGY Review on the existing theory or concept of the DERIVATION OF A UNIT HYDROGRAPH, further explain and discuss how the concept or theory or information works
25: The LTO issues license plates consisting of letters and numbers. There are 26 letters may be repeated. There are 9 digits( excluding 0 ) and the digits may be repeated. How many possible license plates can be issued with two letters followed by three numbers ? Select one: a. 676,000 b. 492,804 c. 584,000 d. 327,600
i need the answer quickly
the answer choices are given in the picture.... the answers provided are not even options from the picture