Irregular Hip/Valley. Calculated Industries 4050

REGULAR HIP/VALLEY

AND JACK RAFTERS

A roof’s Pitch is 225 mm and half the total span is 1800 mm. Find the lengths of the

Common, Hip/Valley and Jack rafters. Also find the incremental jack adjustment and the cut angles. (Jack rafters at 400 mm Oncenter spacing.)

400 mm

KEYSTROKE DISPLAY oo

1800MR

0.

1. Find the Common rafter length:

RUN 1800. MM

225Mp d (Common)

2. Enter On-Center spacing

PTCH 225. MM

DIAG 2237.309

MM

400MQ5 (o.c.) OC

@

400. MM

3. Find the Hip/Valley rafter length and cut angles; then the incremental jack adjustment, Jack rafter lengths and cut angles:

H j

H/V 2871.507 MM

JKOC

@

400 M j j j j j

JK 1 1740.129 MM

JK 2 1242.949 MM

JK 3 745.7696 MM

JK 4 248.5899 MM

JK 5 0. MM

IRREGULAR HIP/VALLEY

A roof has a 225 mm Pitch, an irregular Pitch of 300 mm, and half the span is 2000 mm.

Solve the Hip/Valley length. On-center spacing is 400 mm.

KEYSTROKE DISPLAY oo

1. Find Common rafter length:

225Mp

2000MR find irregular Hip rafter:

400MQ5

(o.c.)

PTCH 225. MM

RUN 2000.

MM d DIAG 2485.899 MM

2. Enter On-center spacing and irregular Pitch;

OC

@

400.

0.

MM

300M

QH (lr/Pitch)

M

H

IPCH 7-7/8 INCH

300. MM

IH/V 2903.393 MM

RAKE-WALL – NO BASE

Find each stud size in a Rake-Wall with a peak of 1000 mm, and a length of 1500 mm.

Use 400 mm as your On-center spacing:

P ocket

R efeRence

G uide

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