Hip Roof Rafter Design

The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters.

Hip roof rafter design.

Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Select the following information by using the drop downs to enter values in feet and inches. A hip rafter is called for only when framing a hip roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. Hip rafter diagram with full dimensions.

Continuing on from part 3. A hip roof design refers to a roof where the roof sides slope downwards from a middle peak with the rafter ends meeting the exterior walls of the house. Hip roof framing rafter cut angle template diagram. Roof battens lath hip end side.

Print full scale paper templates cut and fold over wood to mark and cut angles. Hip roof framing diagram main roof side hip roof truss layout hip end side hip roof framing plan truss layout jack rafters layout left side. Each of the four sides of the roof slope downward there are no upright or vertical parts no gables etc on a hip roof. The design of hip roofs can follow triangular sides as well as a combination of triangular and trapezoidal sides.

There are several variables to consider when determining the proper rafter size. A jack rafteris a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both. If using a circular saw or compound miter saw set saw bevel angle to 45 to obtain creeper and hip side angles. This sizing guide for roof rafters will help determine what you need for your small project.

If using a circular saw or compound miter saw set saw bevel angle to 45 to obtain creeper and hip side angles. Hip roof framing rafter cut angle template diagram. Thus there arehip jack raftersand valley jack rafters. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter.

Let s consider a basic gable wood roof framing design. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. Some hip roof designs follow pyramid shapes whereas others may have more symmetrical structures. Hip roof designs hip roofs can be designed over square shaped buildings as well as on rectangular ones.

S5 s8 s9 s12 s21 s24 s29 32 jack rafters layout right side. S1 s4 s13 s16 s17 s20 s25 28 hip rafters layout.