3. Roof / Storm Drains: Given the simple flat roof shown below (100x300'); layout the primary...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
3. Roof / Storm Drains: Given the simple flat roof shown below (100x300'); layout the primary roof drains locations, connect drains to a common horizontal storm drain piping system, route the horizontal storm drain piping to the vertical storm drain drop down to the pipe exit in the S.W. corner of the building. Size horizontal and vertical storm drain piping. Size roof drain bodies. Utilize the following assumptions: a. Utilize requirements from Chapter 11 of the International Plumbing Code (attached) b. Assume 3" for the rainfall intensity in inches per hour c. There shall be one roof drain for every 50x50' area; center drain within this area. d. Roof drain bodies shall be sized using the Vertical Leader Sizing table in the attached IPC data. i. NOTE - Roof drain body size is normally based on the roof drain manufacturer's performance data but for this assignment utilize the Vertical Leader Sizing table. e. Vertical drain pipe sizing shall be sized using the Storm Drain Pipe Sizing table in the attached IPC data. f. Horizontal drain pipe sizing shall be sized using he Storm Drain Pipe Sizing table in the attached IPC data, using ¼ inch per foot horizontal slope. Horizontal drain main to roof drains. Vertical drain down below slab to exit Storm Sewer Exit, S.W. Corner 100' 300 1106.1 General. The size of the vertical conductors and leaders, building storm drains, building storm sewers and any horizontal branches of such drains or sewers shall be based on the 100-year hourly rainfall rate indicated in Figures 1106.1(1) through 1106.1(5) or on other rainfall rates determined from approved local weather data. SECTION 1106 SIZE OF CONDUCTORS, LEADERS AND STORM DRAINS 1106.2 Size of storm drain piping. Vertical and horizontal storm drain piping shall be sized based on the flow rate through the roof drain. The flow rate, as calculated in accor- dance with Section 1106.2.1, shall be checked against the roof drain manufacturer's published flow rate for the specific roof drain model and size to verify that the selected roof drain will handle the anticipated flow. The flow rate in storm drain piping shall not exceed that specified in Table 1106.2. 1106.2.1 Rainfall rate conversion method. The rainfall rate falling on a roof surface shall be converted to a gallon per minute (L/m) flow rate in accordance with Equation 11-1. (Equation 11-1) 1106.3 Vertical leader sizing. Vertical leaders shall be sized based on the flow rate from horizontal gutters or the maxi- mum flow rate through roof drains. The flow rate through vertical leaders shall not exceed that specified in Table 1106.3. 2 3 GPM=Rx A x 0.0104 where: R = Rainfall intensity in inches (mm) per hour. A = Roof area in square feet (m²). 1106.4 Vertical walls. In sizing roof drains and storm drain- age piping, one-half of the area of any vertical wall that diverts rainwater to the roof shall be added to the projected roof area for inclusion in calculating the required size of vertical conductors, leaders and horizontal storm drainage piping. 4 5 PIPE SIZE (inches) VERTICAL DRAIN 34 87 180 311 538 1,117 2,050 3,272 5,543 2021 INTERNATIONAL PLUMBING CODEⓇ® inch per foot 15 39 81 117 6 243 8 505 10 927 12 1,480 15 2.508 For SI: 1 inch -25.4 mm, 1 foot-304.8 mm, 1 gallon per minute - 3.785 L/m. TABLE 1106.3 VERTICAL LEADER SIZING SIZE OF LEADER (inches) 2 2 x 2 14₂ x 2₂ 2¹₂ 2₂ x 2₂ 3 2x4 2₂×3 4 3 × 4¹ 3₂x4 5 4x5 4₂ x 4₂ 6 5x6 5¹/2₂ × 51/₂2 8 6x8 TABLE 1106.2 STORM DRAIN PIPE SIZING CAPACITY (gpm) For SI: 1 inch -25.4 mm, 1 gallon per minute - 3.785 L/m. SLOPE OF HORIZONTAL DRAIN CAPACITY (gpm) 30 30 30 54 54 92 1106.5 Parapet wall scuppers. Where scuppers are used for primary roof drainage or for secondary (emergency over- flow) roof drainage or both, the quantity, size, location and inlet elevation of the scuppers shall be chosen to prevent the depth of ponding water on the roof from exceeding the maxi- mum water depth that the roof was designed for as determined by Section 1611.1 of the International Building Code. Scupper openings shall be not less than 4 inches (102 mm) in height and have a width that is equal to or greater than the circumference of a roof drain sized for the same roof area. The flow through the primary system shall not be considered when locating and sizing secondary scuppers. ½ inch per foot 22 55 115 165 344 714 1,311 2,093 3,546 92 92 192 ½ inch per foot 31 79 163 234 487 1,010 1,855 2.960 5,016 192 192 360 360 360 563 563 563 1208 1208 ½ inch per foot 111 231 331 689 1,429 2,623 4,187 7,093 11-3 3. Roof / Storm Drains: Given the simple flat roof shown below (100x300'); layout the primary roof drains locations, connect drains to a common horizontal storm drain piping system, route the horizontal storm drain piping to the vertical storm drain drop down to the pipe exit in the S.W. corner of the building. Size horizontal and vertical storm drain piping. Size roof drain bodies. Utilize the following assumptions: a. Utilize requirements from Chapter 11 of the International Plumbing Code (attached) b. Assume 3" for the rainfall intensity in inches per hour c. There shall be one roof drain for every 50x50' area; center drain within this area. d. Roof drain bodies shall be sized using the Vertical Leader Sizing table in the attached IPC data. i. NOTE - Roof drain body size is normally based on the roof drain manufacturer's performance data but for this assignment utilize the Vertical Leader Sizing table. e. Vertical drain pipe sizing shall be sized using the Storm Drain Pipe Sizing table in the attached IPC data. f. Horizontal drain pipe sizing shall be sized using he Storm Drain Pipe Sizing table in the attached IPC data, using ¼ inch per foot horizontal slope. Horizontal drain main to roof drains. Vertical drain down below slab to exit Storm Sewer Exit, S.W. Corner 100' 300 1106.1 General. The size of the vertical conductors and leaders, building storm drains, building storm sewers and any horizontal branches of such drains or sewers shall be based on the 100-year hourly rainfall rate indicated in Figures 1106.1(1) through 1106.1(5) or on other rainfall rates determined from approved local weather data. SECTION 1106 SIZE OF CONDUCTORS, LEADERS AND STORM DRAINS 1106.2 Size of storm drain piping. Vertical and horizontal storm drain piping shall be sized based on the flow rate through the roof drain. The flow rate, as calculated in accor- dance with Section 1106.2.1, shall be checked against the roof drain manufacturer's published flow rate for the specific roof drain model and size to verify that the selected roof drain will handle the anticipated flow. The flow rate in storm drain piping shall not exceed that specified in Table 1106.2. 1106.2.1 Rainfall rate conversion method. The rainfall rate falling on a roof surface shall be converted to a gallon per minute (L/m) flow rate in accordance with Equation 11-1. (Equation 11-1) 1106.3 Vertical leader sizing. Vertical leaders shall be sized based on the flow rate from horizontal gutters or the maxi- mum flow rate through roof drains. The flow rate through vertical leaders shall not exceed that specified in Table 1106.3. 2 3 GPM=Rx A x 0.0104 where: R = Rainfall intensity in inches (mm) per hour. A = Roof area in square feet (m²). 1106.4 Vertical walls. In sizing roof drains and storm drain- age piping, one-half of the area of any vertical wall that diverts rainwater to the roof shall be added to the projected roof area for inclusion in calculating the required size of vertical conductors, leaders and horizontal storm drainage piping. 4 5 PIPE SIZE (inches) VERTICAL DRAIN 34 87 180 311 538 1,117 2,050 3,272 5,543 2021 INTERNATIONAL PLUMBING CODEⓇ® inch per foot 15 39 81 117 6 243 8 505 10 927 12 1,480 15 2.508 For SI: 1 inch -25.4 mm, 1 foot-304.8 mm, 1 gallon per minute - 3.785 L/m. TABLE 1106.3 VERTICAL LEADER SIZING SIZE OF LEADER (inches) 2 2 x 2 14₂ x 2₂ 2¹₂ 2₂ x 2₂ 3 2x4 2₂×3 4 3 × 4¹ 3₂x4 5 4x5 4₂ x 4₂ 6 5x6 5¹/2₂ × 51/₂2 8 6x8 TABLE 1106.2 STORM DRAIN PIPE SIZING CAPACITY (gpm) For SI: 1 inch -25.4 mm, 1 gallon per minute - 3.785 L/m. SLOPE OF HORIZONTAL DRAIN CAPACITY (gpm) 30 30 30 54 54 92 1106.5 Parapet wall scuppers. Where scuppers are used for primary roof drainage or for secondary (emergency over- flow) roof drainage or both, the quantity, size, location and inlet elevation of the scuppers shall be chosen to prevent the depth of ponding water on the roof from exceeding the maxi- mum water depth that the roof was designed for as determined by Section 1611.1 of the International Building Code. Scupper openings shall be not less than 4 inches (102 mm) in height and have a width that is equal to or greater than the circumference of a roof drain sized for the same roof area. The flow through the primary system shall not be considered when locating and sizing secondary scuppers. ½ inch per foot 22 55 115 165 344 714 1,311 2,093 3,546 92 92 192 ½ inch per foot 31 79 163 234 487 1,010 1,855 2.960 5,016 192 192 360 360 360 563 563 563 1208 1208 ½ inch per foot 111 231 331 689 1,429 2,623 4,187 7,093 11-3
Expert Answer:
Answer rating: 100% (QA)
To design the roof drainage system well follow these steps 1 Determine the number and location of pr... View the full answer
Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Posted Date:
Students also viewed these civil engineering questions
-
This chapter opens with an introduction to Body Glove International (www.bodyglove.com), a global company that manufactures a quality line of wetsuits for people who like water sports. Many of the...
-
A gardener wishes to connect a water supply pipe from point C on the foundation of a 30-ft-long greenhouse to a water main that passes through points A and B. Determine (a) The value of L which...
-
In Table 11.1 in Chapter 11 we saw data on the state means of students who took the SAT exam. The mean Verbal SAT for North Dakota was 515. The standard deviation was not reported. Assume that 238...
-
Students will present a draft IMC strategy for a start-up company and be asked to analyze its potential effectiveness, identifying gaps and making recommendations for improvement of the strategy....
-
Briefly describe direct, parallel and phased installation. What are the advantages and disadvantages of each installation approach?
-
The metal equilateral triangle in FIGURE EX30.11, 20 cm on each side, is halfway into a 0.10 T magnetic field. a. What is the magnetic flux through the triangle?b. If the magnetic field strength...
-
The adjusted trial balance for CED Electric, Inc., as of June 30, 2010, is presented next: Requirements 1. Prepare the multi-step income statement for June for CED Electric, Inc. 2. Calculate the...
-
GfK Roper surveyed people worldwide asking them how important is acquiring wealth to you. Of 1535 respondents in India, 1168 said that it was of more than average importance. In the United States of...
-
Question 5 StudentsCOOP produces an innovative and popular educational algorithm. The COOP hires students with an monthly salary of 900$ to work on the project. Each student produces 1,100 lines of...
-
The column is constructed from high-strength concrete and eight A992 steel reinforcing rods. If the column is subjected to an axial force of 200 kip, determine the required diameter of each rod so...
-
Develop the company description section for a law rm that you will be using as a basis for your full semester project. The company description should provide a clear and concise overview of the law...
-
Vaughn Manufacturing developed the following data for the current year: Beginning Work in Process Inventory $141000 Direct materials used 208000 Actual overhead 176000 Overhead applied 184000 Cost of...
-
On October 2, 2025, Wildhorse Company sold $6,340 of its elite camping gear (with a cost of $3,700) to Indigo Outfitters. As part of the sales agreement, Wildhorse includes a provision that if Indigo...
-
John, an investment adviser, tells Lisa that if she's willing to invest the amount of $ 1 0 0 today, he can increase this investment by 3 times in 7 years. What annual rate of return is John...
-
(2.) Sketch a possible graph of each function. a) f(x) = -(x-4) (x - 1)(x + 5) b) g(x) = x(x-6) 3. Each member of a family of quadratic functions has zeros at x = -1 and x = 4. a) Write the equation...
-
Statement of Facts Jennifer Wilson (age 47) has hired you to help her plan for her future retirement She plans to retire in 20 years when she will be 67 and live to age 100 (33 years in retirement)...
-
The Recency Effect: Can You Use It to Get a Better Performance Review? If you work for a firm that does employee performance reviews only once a year, as is common in India, maybe you should take...
-
What are technical skills At what level are they most important and why?
-
If you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut does in the movie 2001, A Space Odyssey), you would feel the cold of space-while you radiated energy,...
-
Figure shows three charged particles located on a horizontal axis. For points (such as P) on the axis with r >> d, show that the electric potential V(r) is given by
-
A point source emits 30.0 W of sound isotropically. A small microphone intercepts the sound in an area of 0.750 cm2, 200 m from the source. Calculate (a) The sound intensity there and (b) The power...
-
Is the color of a smartphone nominal or ordinal?
-
A pollster wants to estimate the proportion of voters in a certain town who are Democrats. He goes to a large shopping mall and approaches people to ask whether they are Democrats. Is this a simple...
-
Provide an example of a qualitative variable and an example of a quantitative variable.
Study smarter with the SolutionInn App