Determine the reaction forces for a middle rafter and the beam.ELgreD HAPTERGBEAHING HALL-FAFTBRS @ 24'ae.-BBAM•COLIMNFRAMING PLAN-BEAM-COLUMNSDEABINTWALLFRONT ELEVATIONSIDE ELEVATIONLive snow load = 40 psf• Dead load: (1) Roof and Sheathing = 5 psf, (2) Rafters = 6 lb/ft, (3) Beam = 20 lb/ft• Roof pitch: 5:12%3!Please round to the nearest one tenth (i.e., 0.1).Total load (LL + DL) on a middle rafter after adjusting to horizontal projection =Ib/ftReaction force for a middle rafter (one side) =IbReaction force for the Beam (one side) =lb

given- a roof loading system required-total load on middle rafter in lb/ft.

Answered: Total load (LL+ DL) on a middle rafter…

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Total load (LL+ DL) on a middle rafter after adjusting to horizontal projection =

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter2: Concepts In Structural Steel Design

Section: Chapter Questions

Problem 2.5P

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Concept explainers

Sizing Joists and Rafters

In civil engineering and building construction, joists and rafters are the major components including beams and columns. Almost every structural construction including buildings, skyscrapers, bridges, commercial complexes, and so on makes use of joists and rafters to provide structural integrity to the building. Joists are primarily thick long pieces of metals, concrete, or wood that are used to support the floor and ceiling. On the other hand, rafters form the major component of pitched roofs, which are a series of sloped long pieces extending from a ridged area that makes contact with the plane area of the wall. They account for the load-bearing of the building along with the beams.

Question

Determine the reaction forces for a middle rafter and the beam.
ELgreD HAPTERG
BEAHING HALL
-FAFTBRS @ 24'ae.
-BBAM
•COLIMN
FRAMING PLAN
-BEAM
-COLUMNS
DEABINT
WALL
FRONT ELEVATION
SIDE ELEVATION
Live snow load = 40 psf
• Dead load: (1) Roof and Sheathing = 5 psf, (2) Rafters = 6 lb/ft, (3) Beam = 20 lb/ft
• Roof pitch: 5:12
%3!
Please round to the nearest one tenth (i.e., 0.1).
Total load (LL + DL) on a middle rafter after adjusting to horizontal projection =
Ib/ft
Reaction force for a middle rafter (one side) =
Ib
Reaction force for the Beam (one side) =
lb

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